Yamaha Outboard Motor F6A User Manual

F6A  
F8A  
T8A  
OWNER’S MANUAL  
U.S.A.Edition  
LIT-18626-04-81  
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EMU01449  
TO THE OWNER  
Thank you for choosing a Yamaha outboard  
motor. This Owner’s manual contains infor-  
mation needed for proper operation, mainte-  
nance and care. A thorough understanding  
of these simple instructions will help you  
obtain maximum enjoyment from your new  
Yamaha. If you have any question about the  
operation or maintenance of your outboard  
motor, please consult a Yamaha dealer.  
CAUTION:  
A CAUTION indicates special precau-  
tions that must be taken to avoid damage  
to the outboard motor.  
@
NOTE:  
@
A NOTE provides key information to make  
procedures easier or clearer.  
@
* Yamaha continually seeks advancements  
in product design and quality. Therefore,  
while this manual contains the most cur-  
rent product information available at the  
time of printing, there may be minor dis-  
crepancies between your machine and this  
manual. If there is any question concern-  
ing this manual, please consult your  
Yamaha dealer.  
In this Owner’s Manual particularly impor-  
tant information is distinguished in the fol-  
lowing ways.  
The Safety Alert Symbol means  
ATTENTION! BECOME ALERT!  
YOUR SAFETY IS INVOLVED!  
WARNING  
Failure to follow WARNING instructions  
could result in severe injury or death to  
the machine operator, a bystander, or a  
person inspecting or repairing the out-  
NOTE:  
@
@
The F8MH, T8PR and their standard acces-  
sories are used as a base for the explana-  
tions and illustrations in this manual.  
Therefore, some items may not apply to  
every model.  
board motor.  
@
@
EMU01446  
F6A/F8A/T8A  
OWNER’S MANUAL  
©2001 by Yamaha Motor Corporation, USA  
1st Edition, June 2001  
All rights reserved.  
Any reprinting or unauthorized use  
without the written permission of  
Yamaha Motor Corporation, USA  
is expressly prohibited.  
Printed in Japan  
P/N LIT-18626-04-81  
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EMU00003  
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CONTENTS  
GENERAL INFORMATION  
1
2
3
4
5
6
BASIC COMPONENTS  
OPERATION  
MAINTENANCE  
TROUBLE RECOVERY  
INDEX  
READ THIS OWNERS MANUAL CAREFULLY  
BEFORE OPERATING YOUR OUTBOARD MOTOR.  
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EMU00004  
Chapter 1  
1
GENERAL  
INFORMATION  
IDENTIFICATION NUMBERS RECORD ..1-1  
Outboard motor serial number ................1-1  
Key number .............................................1-1  
EMISSION CONTROL INFORMATION....1-2  
North american models............................1-2  
Star labels.................................................1-3  
SAFETY INFORMATION ...........................1-4  
IMPORTANT LABELS ...............................1-6  
Warning labels .........................................1-6  
Caution labels...........................................1-6  
BASIC BOATING RULES  
(Rules of the road).....................................1-7  
Steering and sailing rules and sound  
signals ......................................................1-7  
Rules when encountering vessels...........1-8  
Other special situations............................1-9  
FUELING INSTRUCTIONS......................1-11  
Gasoline (petrol).....................................1-12  
ENGINE OIL..............................................1-13  
BATTERY REQUIREMENT.....................1-14  
PROPELLER SELECTION......................1-15  
START-IN-GEAR PROTECTION ............1-16  
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EMU00005  
IDENTIFICATION NUMBERS  
RECORD  
EMU00007  
OUTBOARD MOTOR SERIAL  
NUMBER  
The outboard motor serial number is  
stamped on the label attached to the port  
side of the clamp-bracket.  
Record your outboard motor serial number  
in the spaces provided to assist you in  
ordering spare parts from your Yamaha  
dealer or for reference in case your outboard  
motor is stolen.  
1 Outboard motor serial number  
EMU00008  
KEY NUMBER  
If a main key switch is equipped with the  
motor, the key identification number is  
stamped on your key as shown in the illus-  
tration. Record this number in the space  
provided for reference in case you need a  
new key.  
1 Key number  
1-1  
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EMU01385  
EMISSION CONTROL  
INFORMATION  
EMU01444  
NORTH AMERICAN MODELS  
This engine conforms to U.S. Environmental  
Protection Agency (EPA) regulations for  
marine SI engines. See the label affixed to  
your engine for details.  
Approval label of Emission control certif-  
icate  
This label is attached to the bottom cowling.  
1 Emission control information label  
New Technology ; (4-stroke/HPDI) EM  
Manufactured date label  
This label is attached to the clamp bracket.  
2 Manufactured date label  
1-2  
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EMU01389  
STAR LABELS  
Your outboard motor is labeled with a Cali-  
fornia Air Resources Board (CARB) star  
label. See below for a description of your  
particular label.  
1 Star label  
One Star - Low Emission  
The one-star label identifies engines that  
meet the Air Resources Boards 2001  
exhaust emission standards. Engines meet-  
ing these standards have 75% lower emis-  
sions than conventional carbureted two-  
stroke engines. These engines are equiva-  
lent to the U.S. EPAs 2006 standards for  
marine engines.  
Two Stars - Very Low Emission  
The two-star label identifies engines that  
meet the Air Resources Boards 2004  
exhaust emission standards. Engines meet-  
ing these standards have 20% lower emis-  
sions than One Star-Low-Emission engines.  
Three Stars - Ultra Low Emission  
The three-star label identifies engines that  
meet the Air Resources Boards 2008  
exhaust emission standards. Engines meet-  
ing these standards have 65% lower emis-  
sions than One Star-Low-Emission engines.  
1-3  
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EMU00917  
G This product emits exhaust gases which  
contain carbon monoxide, a colorless,  
odorless gas which may cause brain  
damage or death when inhaled. Symp-  
toms include nausea, dizziness, and  
drowsiness. Keep cockpit and cabin areas  
well ventilated. Avoid blocking exhaust  
outlets.  
SAFETY  
INFORMATION  
G Before mounting or operating the out-  
board motor, read this entire manual.  
Reading it should give you an under-  
standing of the motor and its operation.  
G Before operating the boat, read any  
owners or operators manuals supplied  
with it and all labels. Be sure you under-  
stand each item before operating.  
G Do not overpower the boat with this out-  
board motor. Overpowering the boat  
could result in loss of control. The rated  
power of the outboard should be equal to  
or less than the rated horsepower capac-  
ity of the boat. If the rated horsepower  
capacity of the boat is unknown, consult  
the dealer or boat manufacturer.  
G Do not modify the outboard. Modifications  
could make the motor unfit or unsafe to  
use.  
G Never operate after drinking alcohol or  
taking drugs. About 50% of all boating  
fatalities involve intoxication.  
G Have an approved personal flotation  
device (PFD) on board for every occu-  
pant. It is a good idea to wear a PFD  
whenever boating. At a minimum, children  
and non-swimmers should always wear  
PFDs, and everyone should wear PFDs  
when there are potentially hazardous  
boating conditions.  
G Gasoline is highly flammable, and its  
vapors are flammable and explosive.  
Handle and store gasoline carefully. Make  
sure there are no gas fumes or leaking  
fuel before starting the engine.  
G Check throttle, shift, and steering for  
proper operation before starting the  
engine.  
G Attach the engine stop switch lanyard to a  
secure place on your clothing, or your  
arm or leg while operating. If you acciden-  
tally leave the helm, the lanyard will pull  
from the switch, stopping the engine.  
G Know the marine laws and regulations  
where you will be boating - and obey  
them. Refer to the RULES OF THE  
ROADsection for basic boating rules.  
G Stay informed about the weather. Check  
weather forecasts before boating. Avoid  
boating in hazardous weather.  
G Tell someone where you are going: leave  
a Float Plan with a responsible person.  
Be sure to cancel the Float Plan when  
you return.  
G Use common sense and good judgment  
when boating. Know your abilities, and be  
sure you understand how your boat han-  
dles under the different boating conditions  
you may encounter. Operate within your  
limits, and the limits of your boat. Always  
operate at safe speeds, and keep a care-  
ful watch for obstacles and other traffic.  
G Always watch carefully for swimmers dur-  
ing the engine operation.  
G Stay away from swimming areas.  
1-4  
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G When a swimmer is in the water near you  
shift into neutral and shut off the engine.  
G Be informed about boating safety. Addi-  
tional publications and information can be  
obtained from many organizations, includ-  
ing the following:  
United States Coast Guard  
Consumer Affairs Staff (G-BC)  
Office of Boating, Public, and Consumer  
Affairs  
U.S. Coast Guard Headquarters  
Washington, D.C. 20593-0001  
Boating Safety Hotline: 1-800-368-5647  
National Marine Manufacturers Associa-  
tion (NMMA)  
401 N. Michigan Ave.  
Chicago, Il 60611  
Marine Retailers Association of America  
155 N. Michigan Ave.  
Chicago, Il 60601  
1-5  
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EMU00014  
IMPORTANT LABELS  
WARNING LABELS  
1
2
CAUTION LABELS  
3
1-6  
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EMU00015  
Stand-on vessel  
BASIC BOATING RULES  
The vessel with the right-of-way has the duty  
to continue its course and speed, except to  
avoid an immediate collision. When you  
maintain your direction and speed, the other  
vessel will be able to determine how best to  
avoid you.  
(Rules of the road)  
Just as there are rules which apply when  
you are driving on streets and high ways,  
there are waterway rules which apply when  
you are driving your boat. These rules are  
used internationally, and are also enforced  
by the United States Coast Guard and local  
agencies. You should be aware of these  
rules, and follow them whenever you  
encounter another vessel on the water.  
Give-way vessel  
The vessel which does not have the right-of-  
way has the duty to take positive and timely  
action to stay out of the way of the Stand-On  
vessel. Normally, you should not cross in  
front of the vessel with the right-of-way. You  
should slow down or change directions  
briefly and pass behind the other vessel.  
You should always move in such a way that  
the operator of the other vessel can see  
what you are doing.  
Several sets of rules prevail according to  
geographic location, but are all basically the  
same as the International Rules of the  
Road. The rules presented here in your  
Owners Manual are condensed, and have  
been provided for your convenience only.  
Consult your local U.S. Coast Guard Auxil-  
iary or Department of Motor Vehicles for a  
complete set of rules governing the waters  
in which you will be using your boat.  
The general prudential rule”  
This rule is called Rule 2 in the International  
Rules and says,  
In obeying and construing these rules  
due regard shall be had to all dangers of  
navigation and collision, and to any spe-  
cial circumstances, which may render a  
departure from the above rules neces-  
sary in order to avoid immediate danger.’  
STEERING AND SAILING RULES  
AND SOUND SIGNALS  
Whenever two vessels on the water meet  
one another, one vessel has the right-of-  
way; it is called the stand-onvessel. The  
vessel which does not have the right-of-way  
is called the give-wayor burdenedves-  
sel. These rules determine which vessel has  
the right-of-way, and what each vessel  
should do.  
In other words, follow the standard rules  
except when a collision will occur unless  
both vessels try to avoid each other. If that is  
the case, both vessels become Give-Way”  
vessels.  
1-7  
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avoid an accident. You should keep the  
other vessel on your port (left) side. This  
rule doesnt apply if both of you will clear  
one another if you continue on your set  
course and speed.  
RULES WHEN ENCOUNTERING  
VESSELS  
There are three main situations which you  
may encounter with other vessels which  
could lead to a collision unless the Steering  
Rules are followed:  
Meeting  
(you are approaching another vessel  
head-on)  
Crossing  
(you are traveling across the other ves-  
sels path)  
Overtaking  
(you are passing or being passed by  
another vessel)  
Crossing  
When two power driven vessels are crossing  
each others path close enough to run the  
risk of collision, the vessel which has the  
other on the starboard (right) side must keep  
out of the way of the other. If the other ves-  
sel is on your right, you must keep out of its  
way; you are the Give-Way vessel. If the  
other vessel is on your port (left) side,  
remember that you should maintain course  
and direction, provided the other vessel  
gives you the right-of-way as it should.  
In the following illustration, your boat is in  
the center. You should give the right-of-way  
to any vessels shown in white area (you are  
the Give-Way vessel). Any vessels in the  
shaded area must yield to you (they are the  
Give-Way vessels). Both you and the meet-  
ing vessel must alter course to avoid each  
other.  
Meeting  
If you are meeting another power vessel  
head on, and are close enough to run the  
risk of collision, neither of you has the right-  
of-way! Both of you should alter course to  
Overtaking  
If you are passing another vessel, you are  
the Give-Wayvessel. This means that the  
1-8  
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other vessel is expected to maintain its 1. When the sailing vessel is overtaking  
course and speed. You must stay out of its  
way until you are clear of it. Likewise, if  
the power-driven vessel, the power-  
driven vessel has the right-of-way.  
another vessel is passing you, you should 2. Sailing vessels should keep clear of any  
maintain your speed and direction so that  
the other vessel can steer itself around you.  
fishing vessel.  
3. In a narrow channel, a sailing vessel  
should not hamper the safe passage of  
a power-driven vessel which can navi-  
gate only in such a channel.  
OTHER SPECIAL SITUATIONS  
There are three other rules you should be  
aware of when driving your boat around  
other vessels.  
Reading buoys and other markers  
The waters of the United states are marked  
for safe navigation by the lateral system of  
buoyage. Simply put, buoys and markers  
have an arrangement of shapes, colors,  
numbers and lights to show which side of  
the buoy a boater should pass on when nav-  
igating in a particular direction. The mark-  
ings on these buoys are oriented from the  
perspective of being entered from seaward  
(the boater is going towards the port). This  
means that red buoys are passed on the  
starboard (right) side when proceeding from  
open water into port, and black buoys are to  
port (left) side. When navigating out of port,  
your position with respect to the buoys  
should be reversed; red buoys should be to  
port and black buoys to starboard.  
Narrow channels and bends  
When navigating in narrow channels, you  
should keep to the right when it is safe and  
practical to do so. If the operator of a power-  
driven vessel is preparing to go around a  
bend that may obstruct the view of other  
water vessels, the operator should sound a  
prolonged blast on the whistle (4 to 6 sec-  
onds). If another vessel is around the bend,  
it too should sound the whistle. Even if no  
reply is heard, however, the vessel should  
still proceed around the bend with caution. If  
you navigate such waters with your boat,  
you will need to carry a portable air horn,  
available from local marine supply stores.  
Many bodies of water used by boaters are  
entirely within the boundaries of a particular  
state. The Uniform State Waterway Marking  
System has been devised for these waters.  
This system uses buoys and signs with dis-  
tinctive shapes and colors to show regula-  
tory or advisory information. These markers  
are white with black letters and orange  
boarders. They signify speed zones,  
restricted areas, danger areas, and general  
information.  
Fishing vessel right-of-way  
All vessels which are fishing with nets, lines  
or trawls are considered to be fishing ves-  
selsunder the International Rules. Vessels  
with trolling lines are not considered fishing  
vessels. Fishing vessels have the right-of-  
way regardless of position. Fishing vessels  
cannot, however, impede the passage of  
other vessels in narrow channels.  
Sailing vessel right-of-way  
Sailing vessels should normally be given the  
right-of-way. The exceptions to this are:  
1-9  
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Remember, markings may vary by geo-  
graphic location. Always consult local boat-  
ing authorities before driving your boat in  
unfamiliar waters.  
1-10  
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EMU00016  
FUELING INSTRUCTIONS  
WARNING  
@
GASOLINE AND ITS VAPORS ARE  
HIGHLY FLAMMABLE AND EXPLOSIVE!  
G Do not smoke when refueling, and  
keep away from sparks, flames, or  
other sources of ignition.  
G Stop engine before refueling.  
G Refuel in a well-ventilated area. Refuel  
portable fuel tanks off the boat.  
G Take care not to spill gasoline. If gaso-  
line spills, wipe it up immediately with  
dry rags.  
G Do not overfill the fuel tank.  
G Tighten the filler cap securely after re-  
fueling.  
G If you should swallow some gasoline  
inhale a lot of gasoline vapor, or get  
gasoline in your eyes, get immediate  
medical attention.  
G If any gasoline spills onto your skin,  
immediately wash with soap and  
water. Change clothing if gasoline  
spills on it.  
G Touch the fuel nozzle to the filler open-  
ing or funnel to help prevent electro-  
static sparks.  
@
CAUTION:  
@
Use only new clean gasoline which has  
been stored in clean containers and is  
not contaminated with water or foreign  
matter.  
@
1-11  
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EMU00025  
GASOLINE (PETROL)  
Recommended gasoline:  
Regular unleaded gasoline with a  
minimum octane rating of 86  
(Pump Octane Number) = (R+M)/2  
If knocking or pinging occurs, use a different  
brand of gasoline or premium unleaded fuel.  
If unleaded gasoline is not available, then  
leaded regular gasoline can be used.  
If leaded gasoline is usually used, engine  
valves and related parts should be  
inspected after every 300 hours of opera-  
tion.  
EMU00027  
Gasohol  
There are two types of gasohol: gasohol  
containing ethanol and that containing meth-  
anol. Gasohol containing ethanol can be  
used if ethanol content does not exceed  
10% and the fuel meets minimum octane  
ratings. Gasohol containing methanol is not  
recommended by Yamaha because it can  
cause fuel system damage or engine perfor-  
mance problems.  
1-12  
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EMU01149  
ENGINE OIL  
Recommended engine oil; Use a combina-  
tion of corresponding SAE and API shown in  
the chart below;  
Engine oil quantity:  
Refer to SPECIFICATIONS, Page 4-1.  
CAUTION:  
@
All four-stroke engines are shipped from  
the factory without engine oil.  
@
NOTE:  
@
If the recommended engine oil is not avail-  
able, then a multigrade type engine oil such  
as SF-CC/CD,SG-CC/CD or SH-CD can be  
used.  
@
1-13  
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EMU01430¯  
BATTERY REQUIREMENT  
CAUTION:  
@
Do not use a battery that does not meet  
the specified capacity. If a battery which  
differs from the specification is used, the  
electrical system may perform poorly or  
be overloaded, causing electrical sys-  
tem damage.  
@
CAUTION:  
@
G A battery cannot be connected to mod-  
els which do not have a rectifier or rec-  
tifier regulator.  
Models without a rectifier or rectifier reg-  
ulator: F6MHA/F8MHA  
G If you wish to use a battery with the  
above models, install an optional recti-  
fier regulator.  
Choose a battery for electric start models  
which meets the following specifications.  
Minimum cold crank performance  
380 Amps at 17.8 °C (0 °F)  
Minimum reserve capacity  
124 minutes at 26.7 °C (80 °F)  
1-14  
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EMU01395  
PROPELLER SELECTION  
The performance of your outboard motor will  
be critically affected by your choice of pro-  
peller, as an incorrect choice could  
adversely affect performance and could also  
seriously damage the motor. Engine speed  
depends on the propeller size and boat load.  
If engine speed is too high or too low for  
good engine performance, this will have an  
adverse effect on the engine.  
Yamaha outboard motors are fitted with pro-  
pellers chosen to perform well over a range  
of applications, but there may be uses  
where a propeller with a different pitch would  
be more appropriate. For a greater operat-  
ing load, a smaller-pitch propeller is more  
suitable as it enables the correct engine  
speed to be maintained. Conversely, a  
larger-pitch propeller is more suitable for a  
smaller operating load.  
Yamaha dealers stock a range of propellers,  
and can advise you and install a propeller on  
your outboard that is best suited to your  
application.  
NOTE:  
@
At full throttle and under a maximum boat  
load, the engines rpm should be within the  
upper half of the full throttle operating range,  
as listed in SPECIFICATIONSon page 4-1.  
Select a propeller which fulfills this require-  
ment.  
If operating under conditions which allow the  
engines rpm to rise above the maximum rec-  
ommended range (such as light boat loads),  
reduce the throttle setting to maintain the  
rpm in the proper operating range.  
@
1-15  
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1 Propeller diameter (in inches)  
2 Propeller pitch (in inches)  
3 Type of propeller (propeller mark)  
Refer to the section CHECKING PROPEL-  
LERfor instructions on propeller removal  
and installation.  
EMU01209¯  
START-IN-GEAR PROTECTION  
Yamaha outboard motors or Yamaha  
approved remote control units are equipped  
with start-in-gear protection device(s). This  
feature permits the engine to be started only  
when it is Neutral. Always select Neutral  
before starting the engine.  
1-16  
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-MEMO-  
1-17  
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EMU00037  
Chapter 2  
BASIC COMPONENTS  
MAIN COMPONENTS................................2-1  
2
OPERATIONS OF CONTROLS AND  
OTHER FUNCTIONS..................................2-3  
Fuel tank...................................................2-3  
Choke knob..............................................2-3  
Recoil starter handle  
(if equipped) .............................................2-4  
Starter button (for tiller control model).....2-4  
Multifunction tiller handle .........................2-4  
Remote control.........................................2-8  
Steering friction adjusting lever..............2-13  
Trim angle adjusting rod ........................2-13  
Power trim/tilt switch ..............................2-14  
Tilt lock mechanism  
(for manual tilt model) ............................2-14  
Tilt support knob.....................................2-15  
Tilt support bar .......................................2-15  
Power tilt unit..........................................2-15  
Top cowling lock lever............................2-16  
Flushing device......................................2-16  
Warning indicator(s)...............................2-16  
WARNING SYSTEM.................................2-17  
Low oil pressure warning.......................2-17  
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EMU01206  
MAIN COMPONENTS  
F6A/F8A  
1 Top cowling  
B Gear shift lever  
C Tiller handle  
D Steering friction adjusting lever  
E Tilt lock lever  
F Clamp screw  
G Rope attachment  
H Flushing device  
I Choke knob  
2 Top cowling lock lever  
3 Anti-cavitation plate  
* 4 Propeller  
5 Cooling water inlet  
6 Oil drain bolt  
7 Trim angle adjusting rod  
8 Clamp bracket  
9 Recoil starter handle  
0 Warning indicator  
A Engine stop lanyard switch/  
Engine stop button  
* May not be exactly as shown; also may not be in-  
cluded as standard equipment on all models.  
2-1  
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T8A  
1 Top cowling  
* D Gear shift lever  
* E Tiller handle  
* F Steering friction adjusting lever  
* G Tilt lock lever  
2 Top cowling lock lever  
3 Anti-cavitation plate  
4 Propeller  
5 Cooling water inlet  
6 Oil drain bolt  
7 Trim angle adjusting rod  
8 Clamp bracket  
H Clamp screw  
I Rope attachment  
J Flushing device  
K Choke knob  
* 9 Power tilt switch  
* 0 Recoil starter handle  
A Warning indicator  
* B Starter button  
* L Remote control box  
* May not be exactly as shown; also may not be in-  
cluded as standard equipment on all models.  
* C Engine stop layard switch/  
Engine stop button  
2-2  
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EMU00039  
OPERATIONS OF CONTROLS  
AND  
OTHER FUNCTIONS  
EMU01465  
FUEL TANK  
If your model included a portable fuel tank,  
its parts and functions are as follows.  
1 Fuel hose joint  
2 Fuel meter (if equipped)  
3 Fuel tank cap  
4 Air vent screw (if equipped)  
EMU00042  
Fuel Hose Joint  
This connector is provided for connecting or  
disconnecting fuel hose.  
EMU00044  
Fuel Meter  
This meter is on the fuel tank cap. It shows  
current fuel quantity in the fuel tank approxi-  
mately.  
EMU00045  
Fuel Tank Cap  
This cap is for filling fuel. To remove it, turn it  
counterclockwise.  
EMU00046  
Air Vent Screw  
This screw is on the fuel tank cap. To loosen  
it, turn it counterclockwise.  
2-3  
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EMU00057  
Tiller control model  
CHOKE KNOB  
Pulling out this knob (setting it to ON) sup-  
plies a rich mixture required to start the  
engine.  
EMU00059  
RECOIL STARTER HANDLE  
(If equipped)  
Pull the handle gently until resistance is felt.  
Then vigorously pull the handle straight out  
to crank the engine to start it.  
EMU00060  
STARTER BUTTON (for Tiller control  
model) (T8PH)  
When you push the starter button, the elec-  
tric starter motor cranks the engine to start  
it.  
2-4  
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EMU01122¯  
MULTIFUNCTION TILLER HANDLE  
The tiller handle centralized most of func-  
tions for the outboard motor operation.  
1 Tiller handle  
2 Gear shift lever  
3 Throttle control grip  
4 Throttle indicator  
5 Throttle friction adjusting knob  
6 Engine stop lanyard switch / Engine stop but-  
ton (If equipped)  
7 Main switch (if equipped)  
8 Power tilt switch (if equipped)  
EMU00079  
Tiller handle  
Moving the tiller handle sideways to adjust  
the steering direction.  
EMU00080  
Gear shift lever  
Turning the gear-shift lever forward (bow  
side) engages the clutch with the forward  
gear so that the boat moves ahead. Turning  
the lever backward (stern side) engages the  
reverse gear so that the boat moves astern.  
1 Neutral  
2 Forward  
3 Reverse  
2-5  
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EMU00081  
Throttle control grip  
The throttle control grip is on the tiller han-  
dle. Turn the grip counterclockwise to  
increase speed and clockwise to decrease  
speed.  
EMU00082  
Throttle Indicator  
The fuel consumption curve on the throttle  
indicator shows the relative amount of fuel  
consumed for each throttle position. Choose  
the setting that offers the best performance  
and fuel economy for the desired operation.  
1 Throttle indicator  
EMU01157  
Throttle Friction Adjusting Knob  
A friction device in the tiller handle provides  
adjustable resistance to movement of the  
throttle grip, and can be set according to  
operator preference.  
Resistance  
Increase  
Knob  
Turn clockwise  
Turn counterclockwise  
Decrease  
When constant speed is desired, tighten the  
adjusting knob to maintain the desired throt-  
tle setting.  
WARNING  
@
Do not overtighten the friction adjusting  
knob. If there is too much resistance, it  
may be difficult to move the throttle grip,  
which could result in an accident.  
@
2-6  
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EMU00933  
Engine Stop Lanyard Switch  
The lock-plate 1 must be attached to the  
engine stop lanyard switch for the engine to  
run. The lanyard 2 should be attached to a  
secure place on the operators clothing, or  
arm or leg. Should the operator fall over-  
board or leave the helm, the lanyard will pull  
out the lock plate, stopping ignition to the  
engine. This will prevent the boat from run-  
ning away under power.  
WARNING  
@
G Attach the lanyard to a secure place on  
your clothing, your arm or leg while  
operating.  
G Do not attach the lanyard to clothing  
that could tear loose. Do not route the  
lanyard in such a way that it could  
become entangled, preventing it from  
functioning.  
G Avoid accidentally pulling the lanyard  
during normal operation. Loss of  
engine power means the loss of most  
steering control. Also, without engine  
power, the boat could slow rapidly.  
This could cause people and objects  
in the boat to be thrown forward.  
@
NOTE:  
@
The engine cannot be started with the lock-  
plate removed.  
@
EMU00085  
Engine Stop Button  
Pushing this button opens the ignition circuit  
and stops the engine.  
2-7  
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EMU01323  
Power Tilt Switch  
The power tilt adjusts the motor angle in  
relation to the transom. The power tilt switch  
is located on the tiller handle. Pushing the  
switch UPtilts the motor up. Pressing the  
switch DNtilts the motor down. When the  
switch button is released, the motor will stop  
in its current position.  
NOTE:  
@
Refer to the section TILTING UP/DOWN”  
for instructions on usage.  
@
EMU00094  
REMOTE CONTROL  
Both the shifter and the throttle are actuated  
by the remote control lever. In addition, this  
remote control also has the electrical  
switches.  
1 Remote control lever  
2 Neutral interlock trigger  
3 Neutral throttle lever  
4 Main switch / Choke switch  
5 Engine stop lanyard switch  
6 Power tilt switch  
7 Throttle friction adjusting screw  
2-8  
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EMU00098  
Remote Control Lever  
Moving the lever forward from the Neutral  
position engages Forward gear. Pulling the  
lever back from Neutral engages Reverse.  
The engine will continue to run at idle until  
the lever is moved about 35° (a detent can  
be felt). Moving the lever farther opens the  
throttle, and the engine will begin to acceler-  
ate.  
1 Neutral  
2 Forward  
3 Reverse  
4 Shift  
5 Fully closed  
6 Throttle  
7 Fully open  
EMU00099  
Neutral Interlock Trigger  
To shift out of Neutral, the neutral interlock  
trigger of the remote control lever must first  
be pulled up.  
2-9  
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EMU00100  
Neutral Throttle Lever  
To open the throttle without shifting into  
either Forward or Reverse, place the remote  
control lever in the Neutral position and lift  
the neutral throttle lever.  
NOTE:  
@
The neutral throttle lever will operate only  
when the remote control lever is in Neutral.  
The remote control lever will operate only  
when the neutral throttle lever is in the  
closed position.  
@
1 Fully open  
2 Fully closed  
EMU00101  
Main switch  
The main switch controls the ignition sys-  
tem; its operation is described below.  
G OFF  
Electrical circuits switched off.  
(The key can be removed.)  
G ON  
Electrical circuits switched on.  
(The key cannot be removed.)  
G START  
Starter-motor will turn and start engine.  
(When the key is released, it returns auto-  
matically to ON.)  
2-10  
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EMU00102  
Choke Switch  
While the main switch is being pressed in at  
ONor START, the choke system will  
switch on, to supply a rich mixture required  
to start the engine. (When the key is  
released, it will switch off automatically.)  
EMU00934  
Engine Stop Lanyard Switch  
The lock-plate 1 must be attached to the  
engine stop lanyard switch for the engine to  
run. The lanyard 2 should be attached to a  
secure place on the operators clothing, or  
arm or leg. Should the operator fall over-  
board or leave the helm, the lanyard will pull  
out the lock plate, stopping ignition to the  
engine. This will prevent the boat from run-  
ning away under power.  
WARNING  
@
G Attach the lanyard to a secure place on  
your clothing, your arm or leg while  
operating.  
G Do not attach the lanyard to clothing  
that could tear loose. Do not route the  
lanyard in such a way that it could  
become entangled, preventing it from  
functioning.  
G Avoid accidentally pulling the lanyard  
during normal operation. Loss of  
engine power means the loss of most  
steering control. Also, without engine  
power, the boat could slow rapidly.  
This could cause people and objects  
in the boat to be thrown forward.  
@
NOTE:  
@
The engine cannot be started with the lock-  
plate removed.  
@
2-11  
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EMU01316  
Power Tilt Switch  
The power tilt adjusts the motor angle in  
relation to the transom. The power tilt switch  
is located on the remote control lever grip.  
Pushing the switch UPtilts the motor up.  
Pressing the switch DNtilts the motor  
down. When the switch button is released,  
the motor will stop in its current position.  
NOTE:  
@
Refer to the section TILTING UP/DOWN”  
for instructions on usage.  
@
EMU01155  
Throttle Friction Adjusting Screw  
A friction device in the remote control box  
provides adjustable resistance to move-  
ment of the remote control lever, and can be  
set according to operator preference. An  
adjusting screw is located on the front of the  
remote control box.  
Resistance  
Increase  
Screw  
Turn clockwise  
Turn counterclockwise  
Decrease  
WARNING  
@
Do not overtighten the friction adjusting  
screw. If there is too much resistance, it  
may be difficult to move the lever, which  
could result in an accident.  
@
2-12  
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EMU01295  
STEERING FRICTION ADJUSTING  
LEVER  
A friction device provides resistance to  
steering movement. This is adjustable  
according to operator preference.  
Resistance  
Increase  
Lever  
Turn to port  
Turn to starboard  
Decrease  
WARNING  
@
Do not overtighten the friction adjusting  
lever. If there is too much resistance, it  
may be difficult to steer, which could  
result in an accident.  
@
EMU01297  
TRIM ANGLE ADJUSTING ROD  
The position of the trim angle adjusting rod  
determines the minimum trim angle of the  
outboard motor in relation to the transom.  
2-13  
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EMU01501¯  
POWER TILT SWITCH  
The power tilt adjusts the motor angle in  
relation to the transom. The power tilt switch  
is located on top of the steering bracket.  
Pushing the switch UPtrims the motor up,  
then tilts the motor up. Pressing the switch  
DNtilts the motor down and trims the  
motor down. When the switch button is  
released, the motor will stop in its current  
position.  
WARNING  
Use the power tilt switch located on top  
of the steering bracket only when the  
boat is at a complete stop with the  
engine off. Attempting to use the cowl-  
ing-mounted power tilt switch while the  
boat is moving could increase the risk of  
falling overboard and could distract the  
operator, increasing the risk of collision  
with another boat or an obstacle.  
NOTE:  
Refer to the section Tilting Up/Downfor  
instructions on usage.  
EMU00152  
TILT LOCK MECHANISM  
(for Manual tilt model)  
The tilt-lock mechanism is used to prevent  
reverse thrust from the propeller lifting the  
outboard motor when reversing. To lock it,  
set the tilt-lock lever in the up position. To  
release it, push the tilt-lock lever down.  
1 Tilt-lock lever  
2-14  
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EMU00155  
TILT SUPPORT KNOB  
Power tilt model  
To keep the outboard motor in the tilted-up  
position, push the tilt support knob under the  
swivel bracket.  
EMU00156¯  
TILT SUPPORT BAR  
The tilt support bar 1 keeps the outboard  
motor in the tilted up position.  
EMU01348  
POWER TILT UNIT  
This unit tilts the motor up and down and is  
controlled via the power tilt switch.  
1 Power tilt unit  
2 Power tilt motor  
CAUTION:  
@
Do not step on or exert pressure on the  
power tilt motor. The power tilt unit could  
be damaged as a result.  
@
2-15  
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EMU00161  
TOP COWLING LOCK LEVER  
To remove the engine top cowling, pull up  
the lock lever. Then lift off the cowling. When  
replacing the cowling, check to be sure it fits  
properly in the rubber seal. Then lock the  
cowling again by moving the lever down-  
ward.  
EMU01146  
FLUSHING DEVICE  
This device 1 is used to clean the cooling  
water passages of the motor using a garden  
hose and tap water.  
NOTE:  
@
Refer to Cleaning Cooling-water Passages”  
in Chapter 4 for instructions on usage.  
@
EMU01128  
WARNING INDICATOR(S)  
If the engine develops a condition monitored  
by the warning system, an indicator will  
come on. Refer to the WARNING SYSTEM”  
section for details.  
1 Warning indicator(s)  
2-16  
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EMU00169  
WARNING SYSTEM  
CAUTION:  
@
Do not continue to operate the engine if  
the warning device has activated. Con-  
sult your Yamaha dealer if the problem  
cannot be located and corrected.  
@
EMU00173  
LOW OIL PRESSURE WARNING  
If oil pressure drops too low, the warning  
device will activate.  
():Included ():N/A  
Tiller  
control  
model  
Remote  
control  
model  
Activation of  
warning device  
Engine speed will au-  
tomatically decrease  
to about 2,000 r/min.  
The low oil pressure  
warning indicator will  
come on.  
The buzzer will  
sound.  
If the warning system has been activated,  
stop the engine as soon as it is safe to do  
so. Check oil level and add oil as needed. If  
the oil level is correct, consult your Yamaha  
dealer.  
CAUTION:  
@
Do not continue to run the engine if the  
low oil pressure lamp is ON. Serious  
engine damage may occur.  
@
2-17  
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EMU00174  
Chapter 3  
OPERATION  
INSTALLATION..........................................3-1  
Mounting the outboard motor ..................3-2  
Clamping the outboard motor..................3-4  
BREAKING IN (RUNNING IN) ENGINE....3-5  
PRE-OPERATION CHECKS .....................3-6  
Checking the engine oil level...................3-7  
FILLING FUEL ............................................3-8  
3
STARTING ENGINE...................................3-9  
Procedure for tiller control model...........3-10  
Procedure for remote control model......3-13  
WARMING UP ENGINE...........................3-15  
CHECKING POINTS AFTER  
STARTING ENGINE.................................3-15  
SHIFTING..................................................3-16  
Forward ..................................................3-16  
Reverse..................................................3-17  
STOPPING ENGINE.................................3-18  
TRIMMING OUTBOARD MOTOR...........3-19  
Adjusting trim angle................................3-20  
TILTING UP/DOWN..................................3-24  
Procedure for tilting up...........................3-25  
Procedure for tilting down......................3-25  
Procedure for tilting up...........................3-26  
Procedure for tilting down......................3-27  
CRUISING IN SHALLOW WATER..........3-28  
Procedure...............................................3-29  
Returning to original position.................3-29  
CRUISING IN SHALLOW WATER..........3-30  
Procedure...............................................3-30  
CRUISING IN OTHER CONDITIONS......3-32  
Cruising in salt water..............................3-32  
Cruising in turbid water..........................3-32  
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EMU00175  
INSTALLATION  
CAUTION:  
@
Incorrect engine height or obstructions  
to smooth water flow (such as the design  
or condition of the boat or accessories  
such as transom ladders/depth finder  
transducers) can create airborne water  
spray while the boat is cruising. Severe  
engine damage may result if the motor is  
operated continuously in the presence of  
airborne water spray.  
@
NOTE:  
@
During water testing check the buoyancy of  
the boat, at rest, with its maximum load.  
Check that the static water level on the  
exhaust housing is low enough to prevent  
water entry into the powerhead, when water  
rises due to waves when the outboard is not  
running.  
@
3-1  
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EMU01478  
MOUNTING THE OUTBOARD MOTOR  
WARNING  
@
G Overpowering  
a
boat may cause  
severe instability. Do not install an out-  
board motor with more horsepower  
than the maximum rating on the capac-  
ity plate of the boat. If the boat does  
not have a capacity plate, consult the  
boat manufacturer.  
G The information presented in this sec-  
tion is intended as reference only. It is  
not possible to provide complete  
instructions for every possible boat/  
motor combination. Proper mounting  
depends in part on experience and the  
specific boat/motor combination.  
@
WARNING  
@
Improper mounting of the outboard  
motor could result in hazardous condi-  
tions such as poor handling, loss of con-  
trol, or fire hazards. Observe the  
following:  
G For permanently mounted models,  
your dealer or other person experi-  
enced in proper rigging should mount  
the motor. If you are mounting the  
motor yourself, you should be trained  
by an experienced person.  
G For portable models, your dealer or  
other person experienced in proper  
outboard motor mounting should  
show you how to mount your motor.  
@
Mount the outboard motor on the center line  
(keel line) of the boat, and ensure that the  
boat itself is well balanced. Otherwise, the  
boat will be hard to steer. For boats without  
a keel or which are asymmetrical, consult  
your dealer.  
1 Center line (keel line)  
3-2  
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EMU01298  
Mounting Height  
To run your boat at optimum efficiency, the  
water-resistance (drag) of the boat and out-  
board motor must be made as little as possi-  
ble. The mounting-height of the outboard  
motor greatly affects the water-resistance. If  
the mounting-height is too high, cavitation  
tends to occur, thus reducing the propulsion;  
and if the propeller tips cut the air, the  
engine speed will rise abnormally and cause  
the engine to overheat. If the mounting-  
height is too low, the water-resistance will  
increase and thereby reduce engine effi-  
ciency. Mount the engine so that the anti-  
cavitation plate is between the bottom of the  
boat and a level 25 mm (1 in.) below it.  
NOTE:  
@
G The optimum mounting height of the out-  
board motor is affected by the boat/motor  
combination and the desired use. Test  
runs at different heights can help deter-  
mine the optimum mounting height.  
G Refer to the section TRIMMING OUT-  
BOARD MOTORfor instructions on set-  
ting the trim angle of the outboard.  
@
3-3  
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EMU01318¯  
CLAMPING THE OUTBOARD MOTOR  
1) Place the outboard on the transom so  
that it is positioned as close to the cen-  
ter as possible. Tighten the transom  
clamp screws evenly and securely.  
Check the clamp-screws for tightness  
occasionally during operation of the  
motor as they can work loose due to  
engine vibration.  
WARNING  
@
Loose clamp screws could allow the  
motor to move on the transom or fall off  
the transom. This could cause loss of  
control and serious injury. Make sure the  
transom screws are tightened securely.  
Occasionally check the screws for tight-  
ness during operation.  
@
2) An engine restraint cable or chain  
should be used. Attach one end to the  
engine restraint cable attachment point  
and the other to a secure mounting point  
on the boat. Otherwise, the engine could  
be completely lost if it accidentally falls  
off the transom.  
Secure the clamp bracket to the transom  
with the bolts provided with the out-  
board. For details, consult your dealer.  
WARNING  
@
Avoid using bolts, nuts or washers other  
than those contained in the engine pack-  
aging. If used, they must be of at least  
the same quality of material and strength  
and must be tightened securely. After  
tightening, test run the engine and check  
their tightness.  
@
1 Motor mounting parts  
3-4  
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EMU00224  
BREAKING IN (RUNNING IN)  
ENGINE  
Your new engine requires a period of break-  
in (running-in) to allow mating surfaces of  
moving parts to wear-in evenly. Correct  
break-in (running-in) will help ensure proper  
performance and longer engine life.  
CAUTION:  
@
Failure to follow the break-in (running-in)  
procedure may result in reduced engine  
life or even severe engine damage.  
@
Break-in (running-in) time: 10 hours  
EMU01367¯  
Run the engine under load (in gear with a  
propeller installed) as follows.  
1) For the first hour of operation:  
Run the engine at 2,000 r/min or at  
approximately half throttle.  
2) For the second hour of operation:  
Run the engine at 3,000 r/min or at  
approximately three-quarter throttle.  
3) For the next eight hours of operation:  
Avoid continuous operation at full throt-  
tle for more than five minutes at a time.  
4) After the first 10 hours:  
Operate the engine normally.  
3-5  
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EMU00204  
PRE-OPERATION CHECKS  
WARNING  
@
If any item in the pre-operation check is  
not working properly, have it inspected  
and repaired before operating the out-  
board motor. Otherwise, an accident  
could occur.  
@
CAUTION:  
@
Do not start the engine out of water.  
Overheating and serious engine damage  
can occur.  
@
EMU00206  
Fuel  
G Check to be sure you have plenty of fuel  
for your trip.  
G Make sure there are no fuel leaks or gas-  
oline fumes.  
G Check fuel line connections to be sure  
they are tight.  
G Be sure the fuel tank is positioned on a  
secure, flat surface, and that the fuel hose  
is not twisted or flattened, or likely to con-  
tact sharp objects.  
EMU00208  
Oil  
G Check the level of the oil in the sump with  
the dipstick. If necessary, add oil to bring  
the level up to the upper mark.  
3-6  
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EMU00209  
Controls  
G Check throttle, shift, and steering for  
proper operation before starting the  
engine.  
G The controls should work smoothly, with-  
out binding or unusual free play.  
G Look for loose or damaged connections.  
G Check operation of the starter and stop  
switches when the outboard motor is in  
the water.  
EMU00210  
Engine  
G Check the engine and engine mounting.  
G Look for loose or damaged fasteners.  
G Check the propeller for damage.  
EMU01436  
CHECKING THE ENGINE OIL LEVEL  
1) Put the outboard motor in an upright  
position (not tilted).  
2) Pull out the oil dipstick and wipe it clean.  
3) Completely re-insert the dipstick and  
pull out it again.  
4) Check the oil level using the dipstick to  
be sure the level falls between the upper  
and lower marks. Fill with oil if it is below  
the lower mark, or drain to the specified  
level if it is above the upper mark.  
1 Oil dipstick  
2 Lower level mark  
3 Upper level mark  
3-7  
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EMU00202  
FILLING FUEL  
1) Remove the fuel tank cap.  
2) Fill the fuel tank carefully.  
3) Close the cap securely after refueling.  
Wipe up any spilled fuel.  
Fuel tank capacity:  
Refer to SPECIFICATIONS, page 4-1.  
EMU00203  
Ring Free Fuel Additive  
Gasoline is a precise blend of many different  
substances, each chosen to give certain  
characteristics. Gasoline blends have been  
changing in recent years in response to con-  
cerns about pollution and resulting emis-  
sions regulations. One of the most obvious  
changes has been the elimination of lead  
from most fuels.  
As gasoline has changed, the amount of  
additives such as aromatics and oxygenates  
has increased. These additives are impor-  
tant for the engines in passenger cars, but  
they can have detrimental effects in marine  
engines, because of increased deposits in  
the combustion chamber. When enough  
deposits collect, piston rings begin sticking.  
Performance drops and engine wear  
increases dramatically.  
While many additives available may reduce  
deposits, Yamaha recommends the use of  
Ring Free Fuel Additive, available from  
your Yamaha dealer. Ring Free has repeat-  
edly proven its ability to clean combustion  
deposits from inside the engine, notably the  
critical piston-ring-land area, and fuel sys-  
tem components. Follow product labeling for  
use instructions.  
3-8  
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EMU01461  
STARTING ENGINE  
WARNING  
@
G Before starting the engine, make sure  
that the boat is tightly moored and that  
you can steer clear of any obstruc-  
tions. Be sure there are no swimmers  
in the water near you.  
G When the air vent screw is loosened,  
gasoline (petrol) vapor will be  
released. Gasoline (petrol) is highly  
flammable, and its vapors are flamma-  
ble and explosive. Refrain from smok-  
ing, and keep away from open flames  
and sparks while loosening the air  
vent screw.  
G This product emits exhaust gases  
which contain carbon monoxide, a col-  
orless, odorless gas which may cause  
brain damage or death when inhaled.  
Symptoms include nausea, dizziness,  
and drowsiness. Keep cockpit and  
cabin areas well ventilated. Avoid  
blocking exhaust outlets.  
@
1) If there is an air vent screw on the fuel  
tank cap, loosen it 2 or 3 turns.  
2) If there is a fuel joint on the motor, firmly  
connect the fuel line to the joint. Then  
firmly connect the other end of the fuel  
line to the joint on the fuel tank.  
NOTE:  
@
During engine operation place the tank hori-  
zontally, or fuel cannot be drawn from the  
fuel tank.  
@
3) Squeeze the primer bulb with the outlet  
end up until you feel it become firm.  
3-9  
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EMU00854  
PROCEDURE FOR TILLER  
CONTROL MODEL  
4) Place the gear-shift lever in the neutral  
position.  
NOTE:  
@
The start-in-gear protection device prevents  
the engine from starting except when in  
Neutral.  
@
5) Place the throttle control grip in the  
STARTposition.  
6) Attach the engine stop switch lanyard to  
a secure place on your clothing, or your  
arm or leg. Then, install the lock plate  
on the other end of the lanyard in the  
engine stop switch.  
WARNING  
@
G Attach the engine stop switch lanyard  
to a secure place on your clothing,  
your arm or leg while operating.  
G Do not attach the lanyard to clothing  
that could tear loose. Do not route the  
lanyard where it could become entan-  
gled, preventing it from functioning.  
G Avoid accidentally pulling the lanyard  
during normal operation. Loss of  
engine power means the loss of most  
steering control. Also, without engine  
power, the boat could slow rapidly.  
This could cause people and objects  
in the boat to be thrown forward.  
@
3-10  
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EMU01366¯  
Manual Start Model  
7) Pull out the choke knob completely.  
NOTE:  
@
It is not necessary to use the choke when  
restarting a warm engine.  
@
8) Pull the starter handle slowly until you  
feel resistance. Then give a strong pull  
straight out to crank and start the  
engine. Repeat if necessary.  
9) After the engine starts, return the starter  
handle slowly to the original position  
before releasing it.  
NOTE:  
@
If the engine doesnt start on the first try,  
repeat the procedure. If the engine fails to  
start after 4 or 5 tries, open the throttle a  
small amount (between 1/8 and 1/4) and try  
again. If the engine still fails to start, refer to  
Troubleshootingin Chapter 5.  
@
3-11  
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EMU01491  
Electric Start Models  
7) Pull out the choke knob completely.  
NOTE:  
@
G It is not necessary to use the choke when  
restarting a warm engine.  
G If the choke knob is left pulled out, the  
engine will stall.  
@
8) Push the starter button to start the  
motor.  
9) Immediately after the engine starts,  
release the starter button to return it to  
the original position.  
10) Return the throttle control grip slowly to  
the fully closed position so that the  
engine does not stall.  
CAUTION:  
@
G Never push the starter button while the  
engine is running.  
G Do not keep the starter motor turning  
for more than 5 seconds. If the starter-  
motor is turned continuously for more  
than 5 seconds, the battery will be  
quickly discharged, thus making it  
impossible to start the engine. If the  
engine will not start after 5 seconds of  
cranking, release your hand from the  
starter button, and crank the engine  
again after an interval of 10 seconds.  
@
NOTE:  
@
G When starting a cold engine, the engine  
needs to be warmed up. Refer to WARM-  
ING UP ENGINEfor details.  
G If the engine doesnt start on the first try,  
repeat the procedure. If the engine fails to  
start after 4 or 5 tries, open the throttle a  
small amount (between 1/8 and 1/4) and try  
again. If the engine still fails to start, refer to  
TROUBLESHOOTINGin Chapter 5.  
@
3-12  
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EMU01000  
PROCEDURE FOR REMOTE  
CONTROL MODEl  
4) Place the remote control lever in the  
Neutral position. When the engine is  
warm, open the throttle slightly using the  
neutral throttle lever or the free acceler-  
ator. After the engine starts, return the  
throttle to the fully closed position.  
NOTE:  
@
The start-in-gear protection device prevents the  
engine from starting except when in Neutral.  
@
5) Attach the engine stop switch lanyard to  
a secure place on your clothing, or your  
arm or leg. Then, install the lock plate  
on the other end of the lanyard in the  
engine stop switch.  
WARNING  
@
G Attach the engine stop switch lanyard  
to a secure place on your clothing,  
your arm or leg while operating.  
G Do not attach the lanyard to clothing  
that could tear loose. Do not route the  
lanyard where it could become entan-  
gled, preventing from functioning.  
G Avoid accidentally pulling the lanyard  
during normal operation. Loss of  
engine power means the loss of most  
steering control. Also, without engine  
power, the boat could slow rapidly.  
This could cause people and objects  
in the boat to be thrown forward.  
@
6) Turn the main switch to ON.  
3-13  
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EMU00945  
Electric Start Model  
7) Open the throttle slightly lifting the neu-  
tral throttle lever upwards partially. You  
may need to change the throttle opening  
slightly depending on engine tempera-  
ture.  
After the engine starts, return the throt-  
tle to the original position.  
NOTE:  
@
G As a starting point, lift the lever just until  
you feel resistance, then lift slightly more.  
G The operation of the neutral throttle lever  
is possible only when the remote control  
lever is in N.  
@
8) Press in and hold the main switch to  
operate the remote choke system. (The  
remote choke switch returns to its home  
position when you release your hand.  
Therefore, keep the switch pressed in.)  
NOTE:  
@
G It is not necessary to use the choke when  
the engine is warm.  
G Set the choke knob to the home position,  
or the remote choke system will not oper-  
ate.  
@
9) Turn the main switch to START, and  
hold it for a maximum of 5 seconds.  
10) Immediately after the engine starts,  
release the main switch to return it to  
ON.  
CAUTION:  
@
G Do not turn the main switch to  
STARTwhen the engine is running.  
G Do not keep the starter-motor turning  
for more than 5 seconds. The battery  
will rapidly become exhausted and it  
will be impossible for it to start the  
engine. If the engine does not start  
within 5 seconds, return the main  
switch to ON, wait 10 seconds, and  
then crank the engine again.  
@
3-14  
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EMU01368¯  
WARMING UP ENGINE  
1) After the engine starts, return the choke  
knob to the half-way position. For  
approximately the first 5 minutes after  
starting, warm up the engine by operat-  
ing at one fifth throttle or less. After the  
engine has warmed up, completely push  
in the choke knob. (Failure to do so will  
shorten engine life.)  
NOTE:  
@
G If the choke knob is left pulled out after  
the engine starts, the engine will stall.  
G In temperatures of 5 °C or less, leave the  
choke knob completely pulled out for  
approximately 30 seconds after starting.  
Then follow the standard instructions for  
warming up the engine.  
EMU01411  
CHECKING POINTS AFTER  
STARTING ENGINE  
G After the engine has warmed up, check  
that the engine idling speed is stable.  
G Check that the low oil pressure warning  
indicator light is off. (Refer to WARNING  
SYSTEMsection.)  
G Check for a steady flow of water from the  
cooling-water pilot hole.  
CAUTION:  
@
If water is not flowing out of the pilot hole  
at all times while the engine is running,  
do not continue to run the engine. Over-  
heating and serious damage could occur.  
Stop the engine and check if the water  
inlet on the lower casing is blocked. If the  
problem cannot be found and corrected,  
consult your Yamaha dealer.  
@
3-15  
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EMU00261  
SHIFTING  
WARNING  
@
Before shifting, make sure there are no  
swimmers or obstacles in the water near  
you.  
@
CAUTION:  
@
To change the shifting position from for-  
ward to reverse or vice-versa, close the  
throttle first so that the engine idles (or  
runs at low speeds).  
@
EMU00265  
FORWARD  
Tiller control model  
1) Place the throttle control grip in the fully  
closed position.  
2) Turn the gear-shift lever quickly and  
firmly from Neutral to Forward.  
Remote control model  
Pull up the neutral interlock trigger if  
equipped and move the remote control lever  
quickly and firmly from Neutral to Forward.  
3-16  
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EMU01326¯  
REVERSE  
WARNING  
@
When operating in Reverse, go slowly.  
Do not open the throttle more than half.  
Otherwise, the boat may become unsta-  
ble, which could result in loss of control  
and an accident.  
@
1) Place the throttle control grip in the fully  
closed position (for Tiller control model).  
2) Check that the tilt-lock lever (for Manual  
tilt model) is in the locked position.  
Tiller control model  
3) Turn the gear-shift lever quickly and  
firmly from Neutral to Reverse.  
Remote control model  
3) Pull up the neutral interlock trigger if  
equipped and move the remote control  
lever quickly and firmly from Neutral to  
Reverse.  
3-17  
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EMU00273  
STOPPING ENGINE  
Let it cool off for a few minutes at idle or low  
speed first. Stopping the engine immediately  
after operating at high speed is not recom-  
mended.  
EMU00277¯  
1) Push and hold the engine stop button or  
turn the main switch to OFF.  
2) If the fuel joints are provided, disconnect  
the fuel line from the motor after stop-  
ping the engine.  
3) Tighten the air vent screw on the fuel  
tank cap after stopping the engine, if it is  
equipped.  
4) Remove the key if the boat will be left  
unattended.  
NOTE:  
@
The engine can also be stopped by pulling  
the lanyard and removing the lock plate from  
the engine stop lanyard switch (then turning  
the main switch to OFF).  
@
3-18  
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EMU01412  
TRIMMING OUTBOARD  
MOTOR  
The trim angle of the outboard motor helps  
determine the position of the bow of the boat  
in the water. The correct trim angle will help  
improve performance and fuel economy  
while reducing strain on the engine. The cor-  
rect trim angle depends upon the combina-  
tion of boat, engine, and propeller. Correct  
trim is also affected by variables such as the  
load in the boat, sea conditions, and running  
speed.  
WARNING  
@
Excessive trim for the operating condi-  
tions (either trim up or trim down) can  
cause boat instability and can make  
steering the boat more difficult. This  
increases the possibility of an accident.  
If the boat begins to feel unstable or is  
hard to steer, slow down and/or readjust  
the trim angle.  
@
NOTE:  
@
Refer to the section ADJUSTING TRIM  
ANGLEfor instructions on usage.  
@
1 Trim operating angle  
3-19  
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ADJUSTING TRIM ANGLE  
EMU00951  
Manual tilt model  
There are 4 or 5 holes provided in the clamp  
bracket to adjust the outboard motor trim  
angle.  
1) Stop the engine.  
2) Remove the trim angle adjusting rod 1  
from the clamp bracket while tilting the  
motor up slightly.  
3) Reposition the rod in the desired hole.  
To raise the bow (trim-out), move the rod  
away from the transom. To lower the bow  
(trim-in), move the rod toward the transom.  
Make test runs with the trim set to different  
angles to find the position that works best for  
your boat and operating conditions.  
WARNING  
@
G Stop the engine before adjusting the  
trim angle.  
G Use care to avoid being pinched when  
removing or installing the rod.  
G Use caution when trying a trim posi-  
tion for the first time. Increase speed  
gradually and watch for any signs of  
instability  
or  
control  
problems.  
Improper trim angle can cause loss of  
control.  
@
NOTE:  
@
The outboard motor trim angle can be  
changed approximately 4 degrees by shift-  
ing the trim adjusting-rod one hole.  
@
3-20  
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EMU01414  
Power Tilt Model  
WARNING  
@
G Be sure all people are clear of the out-  
board motor when adjusting the tilt  
angle, also be careful not to pinch any  
body parts between the drive unit and  
clamp bracket.  
G Use caution when trying a trim posi-  
tion for the first time. Increase speed  
gradually and watch for any signs of  
instability  
or  
control  
problems.  
Improper trim angle can cause loss of  
control.  
G Use the power tilt switch located on  
the bottom engine cowling (if  
equipped) only when the boat is at a  
complete stop with the engine off.  
@
1) Place the gear-shift lever in the neutral  
position.  
3-21  
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2) Tilt the engine to the desired angle  
using the power tilt switch.  
NOTE:  
@
Stay within the trim operating angle when  
trimming the outboard motor using the  
power tilt system.  
@
To raise the bow (trim-out), tilt the engine  
up.  
To lower the bow (trim-in), tilt the engine  
down.  
Make test runs with the trim set to different  
angles to find the position that works best for  
your boat and operating conditions.  
3-22  
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EMU00282  
Bow Up  
When the boat is on plane, a bow-up atti-  
tude result in less drag, greater stability and  
efficiency. This is generally when the keel  
line of the boat is up about 3 to 5 degrees.  
When trimmed out, the boat may have more  
tendency to steer to one side or the other.  
Compensate for this as you steer. The trim  
tab can also be adjusted to help offset this  
effect.  
Too much trim-out puts the bow of the boat  
too high in the water. Performance and  
economy are decreased because the hull of  
the boat is pushing the water and there is  
more air drag.  
Excessive trim-up can cause the propeller to  
ventilate, which reduces performance fur-  
ther. When trimmed-out too much, a boat  
may porpoise(hop in the water), which  
could throw the operator and passengers  
overboard.  
EMU00283  
Bow Down  
When the bow of the boat is down, it is eas-  
ier to accelerate from a standing start onto  
plane.  
Too much trim-in causes the boat to plow”  
through the water, decreasing fuel economy  
and making in hard to increase speed.  
Operating with excessive trim-in at higher  
speeds also makes the boat unstable.  
Resistance at the bow is greatly increased,  
heightening the danger of bow steering”  
and making operation difficult and danger-  
ous.  
1 Bow up  
2 Bow down  
3 Optimum angle  
3-23  
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EMU00285  
TILTING UP/DOWN  
If the engine will be stopped for some time,  
or if the boat is moored in shallows, the  
engine should be tilted up to protect the pro-  
peller and casing from damage by collision  
with obstructions, and also to reduce salt  
corrosion.  
CAUTION:  
@
G Before tilting the motor, follow the pro-  
cedures under STOPPING ENGINE.  
Never tilt the motor while the engine is  
running. Severe damage from over-  
heating can result.  
G Do not tilt up the engine by pushing  
the steering handle as this could break  
the handle.  
@
WARNING  
@
Be sure all people are clear of the out-  
board motor when adjusting the tilt  
angle, also be careful not to pinch any  
body parts between the drive unit and  
engine bracket.  
@
WARNING  
@
Leaking fuel is a fire hazard. Disconnect  
the fuel line if the engine will be tilted for  
more than a few minutes. Otherwise, fuel  
may leak. (If the fuel connector is pro-  
vided on the motor.)  
@
3-24  
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EMU00290  
PROCEDURE FOR TILTING UP  
Manual tilt model  
1) Place the gear shift lever in Neutral.  
2) Remove the fuel line connection from  
the motor.  
3) Place the tilt lock lever in the release  
position.  
4) Hold the rear of the top cowling with one  
hand and fully tilt the engine up.  
5) The tilt support bar turns to the locked  
position automatically.  
EMU00300  
PROCEDURE FOR TILTING DOWN  
Manual tilt model  
1) Place the tilt lock lever in the lock posi-  
tion.  
2) Slightly tilt up the engine until the tilt  
support bar is released automatically.  
3) Tilt down the engine.  
3-25  
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EMU01312  
PROCEDURE FOR TILTING UP  
Power tilt model  
1) Remove the fuel-line connection from  
the motor.  
2) Push the power tilt switch UPuntil the  
outboard has tilted up completely.  
3-26  
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3) Push the tilt support knob into the clamp  
bracket to support the engine.  
WARNING  
@
After tilting the engine, be sure to sup-  
port it with the tilt support knob. Other-  
wise, the engine could fall back down  
suddenly if oil in the power tilt unit  
should lose pressure.  
@
EMU01313  
PROCEDURE FOR TILTING DOWN  
Power tilt model  
1) Push the power tilt switch UPuntil the  
engine is supported by the tilt rod.  
2) Pull out the tilt support knob.  
3) Push the power tilt switch DN(Down)  
to lower the engine to the desired posi-  
tion.  
3-27  
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EMU01370  
CRUISING IN SHALLOW  
WATER  
Manual tilt model  
The outboard motor can be tilted up partially  
to allow operation in shallow water.  
WARNING  
@
G Place the gear shift in the Neutral posi-  
tion before using the shallow water  
cruising system.  
G Run the boat at the lowest possible  
speed when using the shallow water  
cruising system. The tilt-lock mecha-  
nism does not work while the shallow  
water cruising system is being used.  
Hitting an underwater obstacle could  
cause the engine to lift out of the  
water, resulting in loss of control.  
G Do not rotate the engine 180° and  
operate the boat in reverse. Place the  
gear-shift in the Reverse position to  
operate the boat in reverse.  
G Use extra care when operating in  
reverse. Too much reverse thrust can  
cause the engine to lift out of the  
water, increasing the chance of acci-  
dent and personal injury.  
G Return the engine to its normal posi-  
tion as soon as the boat is back in  
deeper water.  
@
CAUTION:  
@
Place the gear-shift in the Neutral posi-  
tion before using the shallow water cruis-  
ing system.  
@
3-28  
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EMU00310  
PROCEDURE  
1) Place the gear shift lever in the neutral  
position.  
2) Place the tilt lock lever in the release  
position.  
3) Slightly tilt up the engine. The tilt-sup-  
port bar will lock automatically, support-  
ing the engine in a partially raised  
position.  
NOTE:  
@
This motor has 2 positions for shallow water  
cruising.  
@
RETURNING TO ORIGINAL  
POSITION  
1) Place the tilt lock lever in the lock posi-  
tion.  
2) Slightly tilt up the engine until the tilt-  
support bar automatically returns to the  
free position.  
3) Then, slowly lower the engine to the nor-  
mal position.  
3-29  
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EMU01319  
CRUISING IN SHALLOW  
WATER  
Power tilt model  
The engine can be tilted up partially to allow  
operation in shallow water.  
WARNING  
@
G Place the gear shift in the Neutral posi-  
tion before setting for shallow water  
cruising.  
G Return the engine to its normal posi-  
tion as soon as the boat is back in  
deeper water.  
@
CAUTION:  
@
Do not tilt up the outboard motor so that  
the cooling water inlet of the lower unit is  
above the surface of the water when set-  
ting for and cruising in shallow water.  
Otherwise severe damage from overheat-  
ing can result.  
@
EMU01320  
PROCEDURE  
1) Place the gear shift lever in the neutral  
position.  
3-30  
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2) Slightly tilt up the engine using the  
power tilt switch.  
3-31  
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EMU00316  
CRUISING IN OTHER  
CONDITIONS  
CRUISING IN SALT WATER  
After operating in salt water, wash out the  
cooling-water passages with fresh water to  
prevent them from becoming clogged-up  
with salt deposits.  
NOTE:  
@
Refer to cooling system flushing instructions  
in TRANSPORTING AND STORING OUT-  
BOARD MOTOR.  
@
CRUISING IN TURBID WATER  
It is strongly recommended that the optional  
chromium-plated water-pump kit be installed  
if the outboard is to be used in turbid  
(muddy) water conditions.  
3-32  
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-MEMO-  
3-33  
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EMU00317  
Chapter 4  
MAINTENANCE  
SPECIFICATION DATA .............................4-1  
TRANSPORTING AND STORING  
OUTBOARD MOTOR.................................4-4  
Trailering outboard motor ........................4-4  
Transporting outboard when  
unmounted ...............................................4-5  
Storing outboard motor............................4-5  
PERIODIC MAINTENANCE.....................4-10  
Replacement parts.................................4-10  
Maintenance chart .................................4-11  
Greasing.................................................4-12  
Cleaning and adjusting spark plug........4-13  
Checking fuel system.............................4-15  
Inspecting fuel filter ................................4-16  
Adjusting idling speed............................4-17  
Changing engine oil...............................4-18  
Checking timing belt...............................4-20  
Replacing fuse .......................................4-20  
Checking wiring and connectors ...........4-21  
Exhaust leakage.....................................4-21  
Water leakage........................................4-21  
Checking power tilt system....................4-22  
Checking propeller.................................4-23  
Changing gear oil...................................4-25  
Cleaning fuel tank ..................................4-27  
Inspecting and replacing anode(s)........4-28  
Checking battery  
4
(for electric start model) .........................4-29  
Checking bolts and nuts ........................4-32  
Cleaning cooling-water passages .........4-33  
Motor exterior.........................................4-34  
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EMU00322  
SPECIFICATION DATA  
Model  
Unit  
F6MHA  
Item  
DIMENSIONS  
Overall Length  
Overall Width  
Overall Height  
Transom height  
Weight  
mm (in.)  
mm (in.)  
mm (in.)  
mm (in.)  
kg (lb.)  
1,031 (40.6)  
419 (16.5)  
998 (39.3)/1,125 (44.3)/–  
435 (17.1)/562 (22.1)/–  
38 (84)/40 (88)/–  
S/L/X  
S/L/X  
S/L/X  
PERFORMANCE  
Full throttle operating range  
Maximum output  
Idling speed (Neutral)  
ENGINE  
r/min  
kW (HP) @ r/min  
r/min  
4,500 ~ 5,500  
4.4 (6) @ 5,000  
1,000 ~ 1,100  
Type  
4-stroke, L2  
197 (12.02)  
56.0 × 40.0 (2.20 × 1.57)  
CDI system  
BR6HS-10  
3
Displacement  
Bore × stroke  
Ignition system  
Spark plug  
cm (cu.in.)  
mm (in.)  
NGK  
Spark plug gap  
Control system  
Starting system  
Valve clearance (cold engine) IN  
EX  
mm (in.)  
0.9 ~ 1.0 (0.035 ~ 0.039)  
Tiller control  
Manual start  
0.15 ~ 0.20 (0.006 ~ 0.008)  
0.20 ~ 0.25 (0.008 ~ 0.010)  
mm (in.)  
mm (in.)  
V-AH  
Battery capacity  
Minimum cold crank performance  
Minimum reserve capacity  
Alternator output  
Amps at 17.8 °C (0 °F)  
Minutes at 26.7 °C (80 °F)  
V-A (W)  
12 - (80)  
Starting carburation system  
Choke valve  
DRIVE UNIT  
Gear positions  
Forward-Neutral-Reverse  
Gear ratio  
Trim/tilt system  
Propeller mark  
2.08 (27/13)  
Manual tilt  
N
FUEL AND OIL  
Recommended fuel  
Regular unleaded gasoline  
(Minimum 86)  
P.O.N.  
Fuel tank capacity  
l (US gal, Imp qt)  
12 (3.17, 2.64)  
Recommended engine oil  
4-stroke motor oil  
SE, SF, SG, SH  
10W-30,10W-40  
0.8 (0.85, 0.70)  
API  
SAE  
l (US qt, Imp qt)  
l (US qt, Imp qt)  
Engine oil capacity (without oil filter)  
(with oil filter)  
Recommended gear oil  
Gear oil capacity  
Hypoid gear oil (SAE 90)  
150 (5.07, 5.29)  
3
cm (US oz, Imp oz)  
TIGHTENING TORQUE  
Spark plug  
Propeller nut  
Engine oil drain bolt  
Engine oil filter  
N·m (kgf·m, lb·ft)  
N·m (kgf·m, lb·ft)  
N·m (kgf·m, lb·ft)  
N·m (kgf·m, lb·ft)  
24 (2.4, 17)  
17 (1.7, 12)  
24 (2.4, 17)  
4-1  
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F8MHA  
T8PHA  
T8EHA  
1,031 (40.6)  
419 (16.5)  
1,038 (40.9)  
371 (14.6)  
1,038 (40.9)  
371 (14.6)  
998 (39.3)/1,125 (44.3)/–  
435 (17.1)/562 (22.1)/–  
38 (84)/40 (88)/–  
/1,187 (46.7)/1,255 (49.4)  
/557 (21.9)/625 (24.6)  
/52 (115)/53 (117)  
/1,187 (46.7)/1,255 (49.4)  
/557 (21.9)/625 (24.6)  
/47 (104)/48 (106)  
5,000 ~ 6,000  
5.9 (8) @ 5,500  
1,000 ~ 1,100  
5,000 ~ 6,000  
5.9 (8) @ 5,500  
1,000 ~ 1,100  
5,000 ~ 6,000  
5.9 (8) @ 5,500  
1,000 ~ 1,100  
4-stroke, L2  
4-stroke, L2  
4-stroke, L2  
197 (12.02)  
197 (12.02)  
197 (12.02)  
56.0 × 40.0 (2.20 × 1.57)  
CDI system  
56.0 × 40.0 (2.20 × 1.57)  
CDI system  
56.0 × 40.0 (2.20 × 1.57)  
CDI system  
BR6HS-10  
BR6HS-10  
BR6HS-10  
0.9 ~ 1.0 (0.035 ~ 0.039)  
Tiller control  
0.9 ~ 1.0 (0.035 ~ 0.039)  
Tiller control  
0.9 ~ 1.0 (0.035 ~ 0.039)  
Tiller control  
Manual start  
0.15 ~ 0.20 (0.006 ~ 0.008)  
0.20 ~ 0.25 (0.008 ~ 0.010)  
Electric start  
Manual and electric start  
0.15 ~ 0.20 (0.006 ~ 0.008)  
0.20 ~ 0.25 (0.008 ~ 0.010)  
12 - 40 ~ 70  
0.15 ~ 0.20 (0.006 ~ 0.008)  
0.20 ~ 0.25 (0.008 ~ 0.010)  
12 - 40 ~ 70  
380  
380  
124  
124  
12 - (80)  
12 - 6  
12 - 6  
Choke valve  
Choke valve  
Choke valve  
Forward-Neutral-Reverse  
Forward-Neutral-Reverse  
Forward-Neutral-Reverse  
2.08 (27/13)  
Manual tilt  
N
2.92 (38/13)  
Power tilt  
R
2.92 (38/13)  
Manual tilt  
R
Regular unleaded gasoline  
(Minmum 86)  
Regular unleaded gasoline  
(Minmum 86)  
Regular unleaded gasoline  
(Minmum 86)  
12 (3.17, 2.64)  
12 (3.17, 2.64)  
12 (3.17, 2.64)  
4 stroke motor oil  
SE, SF, SG, SH  
10W-30, 10W-40  
0.8 (0.85, 0.70)  
4 stroke motor oil  
SE, SF, SG, SH  
10W-30, 10W-40  
0.8 (0.85, 0.70)  
4 stroke motor oil  
SE, SF, SG, SH  
10W-30, 10W-40  
0.8 (0.85, 0.70)  
Hypoid gear oil (SAE 90)  
150 (5.07, 5.29)  
Hypoid gear oil (SAE 90)  
370 (12.51, 13.05)  
Hypoid gear oil (SAE 90)  
370 (12.51, 13.05)  
24 (2.4, 17)  
17 (1.7, 12)  
24 (2.4, 17)  
24 (2.4, 17)  
21 (2.1, 15)  
24 (2.4, 17)  
24 (2.4, 17)  
21 (2.1, 15)  
24 (2.4, 17)  
4-2  
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Model  
Unit  
T8PRA  
Item  
DIMENSIONS  
Overall Length  
Overall Width  
Overall Height  
Transom height  
Weight  
mm (in.)  
mm (in.)  
mm (in.)  
mm (in.)  
kg (lb.)  
552 (21.7)  
312 (12.3)  
/1,187 (46.7)/1,255 (49.4)  
/557 (21.9)/625 (24.6)  
/49 (108)/50 (110)  
S/L/X  
S/L/X  
S/L/X  
PERFORMANCE  
Full throttle operating range  
Maximum output  
Idling speed (Neutral)  
ENGINE  
r/min  
kW (HP) @ r/min  
r/min  
5,000 ~ 6,000  
5.9 (8) @ 5,500  
1,000 ~ 1,100  
Type  
4-stroke, L2  
197 (12.02)  
56.0 × 40.0 (2.20 × 1.57)  
CDI system  
BR6HS-10  
3
Displacement  
Bore × stroke  
Ignition system  
Spark plug  
cm (cu.in.)  
mm (in.)  
NGK  
Spark plug gap  
Control system  
Starting system  
mm (in.)  
0.9 ~ 1.0 (0.035 ~ 0.039)  
Remote control  
Electric start  
Valve clearance (cold engine) IN  
EX  
Battery capacity  
mm (in.)  
mm (in.)  
V-AH  
0.15 ~ 0.20 (0.006 ~ 0.008)  
0.20 ~ 0.25 (0.008 ~ 0.010)  
12 - 40 ~ 70  
Minimum cold crank performance  
Minimum reserve capacity  
Alternator output  
Amps at 17.8 °C (0 °F) 380  
Minutes at 26.7 °C (80 °F) 124  
V-A (W)  
12 - 6  
Starting carburation system  
Choke valve  
DRIVE UNIT  
Gear positions  
Forward-Neutral-Reverse  
Gear ratio  
Trim/tilt system  
Propeller mark  
2.92 (38/13)  
Power tilt  
R
FUEL AND OIL  
Recommended fuel  
Regular unleaded gasoline  
(Minmum 86)  
P.O.N.  
Fuel tank capacity  
l (US gal, Imp qt)  
12 (3.17, 2.64)  
Recommended engine oil  
4 stroke motor oil  
SE, SF, SG, SH  
10W-30, 10W-40  
0.8 (0.85, 0.70)  
API  
SAE  
l (US qt, Imp qt)  
l (US qt, Imp qt)  
Engine oil capacity (without oil filter)  
(with oil filter)  
Recommended gear oil  
Gear oil capacity  
Hypoid gear oil (SAE 90)  
370 (12.51, 13.05)  
3
cm (US oz, Imp oz)  
TIGHTENING TORQUE  
Spark plug  
Propeller nut  
Engine oil drain bolt  
Engine oil filter  
N·m (kgf·m, lb·ft)  
N·m (kgf·m, lb·ft)  
N·m (kgf·m, lb·ft)  
N·m (kgf·m, lb·ft)  
24 (2.4, 17)  
21 (2.1, 15)  
24 (2.4, 17)  
4-3  
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EMU01369  
TRANSPORTING AND  
STORING OUTBOARD MOTOR  
WARNING  
@
Leaking fuel is a fire hazard. When trans-  
porting and storing the outboard motor,  
close the air vent screw and fuel cock to  
prevent fuel from leaking.  
@
EMU00326  
TRAILERING OUTBOARD MOTOR  
The motor should be trailered and stored in  
the normal running position. If there is insuf-  
ficient road clearance in this position, then  
trailer the motor in the tilt position using a  
motor support device such as a transom  
saver bar.  
For further details, consult your Yamaha  
dealer.  
WARNING  
@
G Never get under the lower unit while it  
is tilted, even if a motor support bar is  
used. Severe injury could occur if the  
outboard accidentally falls.  
G USE CARE when transporting fuel  
tank, whether in a boat or car.  
G DO NOT fill fuel container to maximum  
capacity. Gasoline will expand consid-  
erably as it warms up and can build up  
pressure in the fuel container. This can  
cause fuel leakage and a potential fire  
hazard.  
@
CAUTION:  
@
Do not use the tilt support lever/knob  
when trailering the boat. The outboard  
motor could shake loose from the tilt  
support and fall. If the motor can not be  
trailered in the down position, use an  
additional support device to secure it in  
the up position.  
@
4-4  
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EMU01362  
TRANSPORTING OUTBOARD WHEN  
UNMOUNTED  
Transport in an upright position to prevent  
engine oil from entering the cylinder head  
and causing damage to the motor.  
EMU00883  
STORING OUTBOARD MOTOR  
When storing your Yamaha outboard for pro-  
longed periods of time, (2 months or longer),  
several important procedures must be per-  
formed to prevent expensive damage. It is  
advisable to have your outboard serviced by  
an authorized Yamaha dealer prior to stor-  
age. However, the following procedures can  
be performed by you, the owner, with a mini-  
mum of tools.  
1
CAUTION:  
@
G Keep the engine in one of the posi-  
tions shown when storing it. Other-  
wise, oil could enter the cylinder from  
the sump, which could cause mechani-  
cal damage or leakage.  
G Drain cooling water completely before  
placing the engine on its side. Other-  
wise, water may enter the engine  
through the exhaust manifold and  
cause corrosion or other mechanical  
damage.  
2
G Store the engine in a dry, well-venti-  
lated place, not in direct sunlight.  
1 Vertical position  
2 Horizontal position (On the tiller handle)  
4-5  
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EMU00335  
Filling Fuel Tank  
Fill the fuel tank with fresh fuel and add one  
ounce of Yamaha Fuel Conditioner and Sta-  
bilizer(Part No. LUB-FUELC-12-00) to  
each gallon of fuel.  
NOTE:  
@
The use of Yamaha Fuel Conditioner and  
Stabilizereliminates the need to drain the  
fuel system. Consult your Yamaha dealer or  
other qualified mechanic if the fuel system is  
to be drained instead.  
@
EMU00338  
Flushing Cooling System and Fogging  
Engine  
Cooling system flushing is essential to pre-  
vent the cooling system from clogging up  
with salt, sand, or dirt. In addition, fogging of  
the engine is mandatory to prevent expen-  
sive engine damage due to rust. Perform the  
flushing and fogging at the same time.  
WARNING  
@
G Do not touch or remove electrical parts  
when starting or during operation.  
G Keep hands, hair and clothes away  
from flywheel and other rotating parts  
while engine is running.  
@
4-6  
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EMU00340  
G Flushing in a Water Tank  
CAUTION:  
@
If the fresh water level is below the level  
of the anti-cavitation plate, or if the water  
supply is insufficient, engine seizure may  
occur.  
@
1) Remove the engine top cowling.  
2) Install the outboard motor on the water  
tank.  
3) Fill the tank with fresh water to above  
the level of the anti-cavitation plate.  
4) Run the engine at a fast idle for 10~15  
minutes.  
5) Just prior to turning off the engine, quickly  
spray Yamaha Stor-Rite Engine Fogging  
Oil(Part No. LUB-STRRT-12-00) into the  
silencer cover. When properly done, the  
engine will smoke excessively and almost  
stall.  
6) Remove the motor from the water tank.  
7) Install the top cowling.  
1 Water surface  
2 Lowest water level  
4-7  
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EMU00349  
Lubrication  
1) Remove the spark plug(s). Spray a  
Yamaha Stor-Rite Engine Fogging Oil”  
into each cylinder for 10 seconds.  
Grease the spark plug threads and rein-  
stall the spark plug(s) and torque to  
proper specification. (Refer to the  
CLEANING AND ADJUSTING SPARK  
PLUG).  
2) Turn the engine over with the stop lan-  
yard disconnected to work the fogging  
oil into the piston rings.  
3) Change the gear-case oil. (Refer to  
CHANGING GEAR OIL). Inspect the  
oil for the presence of water which indi-  
cates a leaky seal. Seal replacement  
should be performed by an authorized  
Yamaha dealership prior to use.  
4) Grease all grease fittings. (Refer to the  
GREASING)  
EMU00351  
Cleaning and Anti-corrosion Measure  
1) Wash down the exterior of the outboard  
with fresh water and dry off completely.  
2) Spray the engines exterior with  
Yamaha Silicone Protectant(Part No.  
LUB-SILCNE-13-00).  
3) Wax the cowling with a non-abrasive  
wax such as Yamaha Silicone Wax”  
(Part No. ACC-11000-15-02).  
4-8  
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EMU00353  
Battery Care  
WARNING  
@
Battery electrolyte is poisonous and dan-  
gerous, causing severe burns, etc. It con-  
tains sulfuric acid.  
Avoid contact with skin, eyes, or cloth-  
ing.  
Antidote:  
EXTERNAL; Flush with water.  
INTERNAL; Drink large quantities of  
water or milk. Follow with milk of magne-  
sia, beaten egg, or vegetable oil. Call  
physician immediately.  
EYES; Flush with water for 15 minutes  
and get prompt medical attention.  
Batteries produce explosive gases: Keep  
sparks, flame, cigarettes, etc. away. Ven-  
tilate when charging or using in a closed  
space. Always wear eye protection when  
working near batteries.  
KEEP OUT OF REACH OF CHILDREN.  
@
Batteries vary among manufacturers. There-  
fore the following procedures may not  
always apply. Consult your battery manufac-  
turers instructions.  
1) Disconnect and remove the battery from  
the boat. Always disconnect the black  
negative lead first to prevent the risk of  
shorting.  
2) Clean the battery casing and terminals.  
Fill each cell to the upper level with dis-  
tilled water.  
3) Store the battery on a level surface in a  
cool, dry, well-ventilated place out of  
direct sunlight.  
4) Once a month, check the specific gravity  
of the electrolyte and recharge as  
required to prolong battery life.  
4-9  
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EMU00354  
PERIODIC MAINTENANCE  
WARNING  
@
Be sure to turn off the engine when you  
perform maintenance unless otherwise  
specified. If you or the owner is not famil-  
iar with machine servicing, this work  
should be done by a Yamaha dealer or  
other qualified mechanic.  
@
A service manual is available for purchase  
through a Yamaha dealer for owners who  
have the mechanical skills, tools, and other  
equipment necessary to perform mainte-  
nance not covered by this owners manual.  
EMU00356  
REPLACEMENT PARTS  
If replacement parts are necessary, use only  
genuine Yamaha parts or equivalents of the  
same type and of equivalent strength and  
materials. Any part of inferior quality may  
malfunction, and the resulting loss of control  
could endanger the operator and passen-  
gers.  
Yamaha genuine parts and accessories are  
available from a Yamaha dealer.  
4-10  
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EMU00363¯  
MAINTENANCE CHART  
Frequency of maintenance operations may be adjusted according to the operating condi-  
tions, but the following table gives general guidelines.  
The mark (G) indicates the check-ups which you may carry out yourself.  
The mark () indicates work to be carried out by your Yamaha dealer.  
Interval  
Initial  
10 hours 50 hours  
(1 month) (3 months) (6 months)  
Every  
Refer  
page  
100 hours 200 hours  
Item  
(1 year)  
Cleaning/Adjustment/  
Replacement  
Spark plug  
G
G
G
4-13  
Greasing points  
Gear oil  
Greasing  
G
G
G
G
4-12  
4-25  
4-15  
4-16  
4-27  
4-17  
4-28  
4-34  
4-33  
4-23  
4-20  
Change  
G
G
Fuel system  
Fuel filter  
Inspection  
Inspection/Replacement  
Cleaning  
G
Fuel tank  
G
Idling speed  
Anode  
Adjustment  
G
G
G
G
G
Inspection/Replacement  
Inspection  
G
G
G
Outboard motor exterior  
Cooling water passages (*2) Cleaning  
Propeller  
Inspection  
Timing belt  
Inspection/Replacement  
G(every  
1 month)  
Battery(*1)  
Inspection/Charge  
4-29  
Carburetor setting  
Bolts/Nuts  
Inspection/Adjustment  
Retightening  
G
G
4-32  
4-18  
Engine oil  
Change  
Valve clearance  
Thermostat  
Inspection/Adjustment  
Inspection  
*1. For Electric starter model.  
*2. When operating in salt water, turbid or muddy water, the engine should be flushed with clean water  
after each use.  
NOTE:  
@
If leaded gasoline is usually used, engine valves and related parts should be inspected after  
every 300 hours of operation in addition to the items on the maintenance chart above.  
@
4-11  
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EMU00366  
GREASING  
Yamaha marine grease  
(Water resistant grease)  
4-12  
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EMU01202  
CLEANING AND ADJUSTING SPARK  
PLUG  
WARNING  
@
When removing or installing a spark  
plug, be careful not to damage the insu-  
lator. A damaged insulator could allow  
external sparks, which could lead to  
explosion or fire.  
@
The spark plug is an important engine com-  
ponent and is easy to inspect. The condition  
of the spark plug can indicate something  
about the condition of the engine. For exam-  
ple, if the center electrode porcelain is very  
white, this could indicate an intake air leak  
or carburetion problem in that cylinder. Do  
not attempt to diagnose any problems your-  
self. Instead, take the outboard motor to a  
Yamaha dealer. You should periodically  
remove and inspect the spark plug because  
heat and deposits will cause the spark plug  
to slowly break down and erode. If electrode  
erosion becomes excessive, or if carbon and  
other deposits are excessive, you should  
replace the spark plug with another of the  
correct type.  
Standard spark plug:  
Refer to SPECIFICATIONS, page 4-1.  
Before fitting the spark plug, measure the  
electrode gap with a wire thickness gauge;  
adjust the gap to specification if necessary.  
Spark plug gap:  
Refer to SPECIFICATIONS, page 4-1.  
4-13  
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When fitting the plug, always clean the gas-  
ket surface and use a new gasket. Wipe off  
any dirt from the threads and screw in the  
spark plug to the correct torque.  
Spark plug torque:  
Refer to SPECIFICATIONS, page 4-1.  
NOTE:  
@
If a torque-wrench is not available when you  
are fitting a spark plug, a good estimate of  
the correct torque is 1/4 to 1/2 a turn past  
finger-tight. Have the spark plug adjusted to  
the correct torque as soon as possible with a  
torque-wrench.  
@
Initial of spark plug  
Plug wrench size  
I.D. mark  
B
21 mm (13/16 in.)  
16 mm (5/8 in.)  
C/BK  
D
18.3 mm (23/32 in.)  
1 Spark plug gap  
2 Spark plug I.D. mark (NGK)  
4-14  
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EMU00369  
CHECKING FUEL SYSTEM  
WARNING  
@
Gasoline (petrol) and its vapors are  
highly flammable and explosive. Keep  
away from sparks, cigarettes, flames or  
other sources of ignition.  
@
Check the fuel line for leaks, cracks, or mal-  
functions. If any problem is found, it should  
be repaired immediately by Yamaha dealer  
or other qualified mechanic.  
Checking points  
G Fuel system parts leakage.  
G Fuel hose joint leakage.  
G Fuel hose cracks or other damage.  
G Fuel connector leakage.  
WARNING  
@
Leaking fuel can result in fire or explo-  
sion.  
G Check for fuel leakage regularly.  
G If any fuel leakage is found, the fuel  
system must be repaired by a qualified  
mechanic. Improper repairs can make  
the outboard unsafe to operate.  
@
4-15  
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EMU00370  
INSPECTING FUEL FILTER  
WARNING  
@
Gasoline (petrol) is highly flammable,  
and its vapors are flammable and explo-  
sive.  
G If you have any question about prop-  
erly doing this procedure, consult your  
Yamaha dealer.  
G Do not perform this procedure on a hot  
or running engine. Allow the engine to  
cool.  
G There will be fuel in the fuel filter. Keep  
away from sparks, cigarettes, flames  
or other sources of ignition.  
G This procedure will allow some fuel to  
spill. Catch fuel in a rag. Wipe up any  
spilled fuel immediately.  
G The fuel filter must be reassembled  
carefully with O-ring, filter cup, and  
hoses in place. Improper assembly or  
replacement can result in a fuel leak,  
which could result in a fire or explo-  
sion hazard.  
@
EMU00374¯  
Check the fuel filter periodically.  
The fuel filter is a one-piece, disposable  
type. If foreign matter is found in the filter,  
replace it. For replacement of the fuel filter,  
consult a Yamaha dealer.  
4-16  
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EMU00991  
ADJUSTING IDLING SPEED  
WARNING  
@
G Do not touch or remove electrical parts  
when starting or during operation.  
G Keep hands, hair and clothes away  
from flywheel and other rotating parts  
while engine is running.  
@
CAUTION:  
@
This procedure must be performed while  
the outboard motor is in the water. A  
flushing attachment or test tank can be  
used.  
@
A diagnostic tachometer should be used for  
this procedure.  
1) Start the engine and allow it to warm up  
fully in Neutral until it is running  
smoothly. If the outboard is mounted on  
a boat, be sure the boat is tightly  
moored.  
2) Adjust the throttle stop-screw 1 to set  
the idling speed to specification (see  
SPECIFICATIONSon page 4-1) by  
turning the stop-screw clockwise to  
increase the idling speed, and turning it  
counterclockwise to decrease the idling  
speed.  
NOTE:  
@
Correct idling-speed adjustment is only pos-  
sible if the engine is fully warmed-up. If not  
warmed up fully, the speed setting will tend  
to be too high. If you have difficulty obtaining  
the specified idle, consult a Yamaha dealer  
or other qualified mechanic.  
@
4-17  
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EMU01415¯  
CHANGING ENGINE OIL  
WARNING  
@
G Avoid draining the engine oil immedi-  
ately after stopping the engine. The oil  
is hot and should be handled with care  
to avoid burns.  
G Be sure the outboard is securely fas-  
tened to the transom or a stable stand.  
@
CAUTION:  
@
G Change the engine oil after the first 10  
hours of operation, and every 100  
hours or at 6-month intervals thereaf-  
ter. Otherwise, the engine will wear  
quickly.  
G Do not overfill the oil, and be sure the  
engine is in an upright position (not  
tilted) when checking and changing  
the engine oil.  
G If the oil level is above the upper level  
mark, drain until the level meets the  
specified capacity. Overfilling the oil  
may cause leakage or damage.  
@
1) Put the outboard motor in an upright  
position.  
2) Prepare a suitable container which can  
hold a larger amount than the engine oil  
capacity. Loosen and remove the drain  
bolt 1 while holding the container under  
the drain hole. Let the oil drain com-  
pletely. Wipe up any spilled oil immedi-  
ately.  
3) Put a new gasket on the drain bolt.  
Apply a light coat of oil to the gasket and  
reinstall the drain bolt.  
Tightening torque:  
Refer to SPECIFICATIONS, page 4-1.  
4-18  
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NOTE:  
@
If a torque wrench is not available when you  
are installing the drain plug, finger tighten  
the bolt just until the gasket comes into con-  
tact with the surface of the drain hole. Then  
tighten 1/4 - 1/2 turn. Have the drain plug  
torqued to the correct value with a torque  
wrench as soon as possible.  
@
4) Remove the oil filler cap 2. Add the cor-  
rect amount of oil through the filler hole.  
Reinstall the filler cap.  
Engine oil grade/capacity:  
Refer to SPECIFICATIONS, page 4-1.  
5) Start the engine and watch to make sure  
the low oil pressure warning lamp turns  
off. Make sure that there are no oil  
leaks.  
CAUTION:  
@
If the oil lamp does not turn off, or if there  
are oil leaks, stop the engine and find the  
cause. Continued operation with a prob-  
lem could cause severe engine damage.  
If the problem cannot be found and cor-  
rected, consult your Yamaha dealer.  
@
6) Turn off the engine and wait 3 minutes.  
Recheck the oil level using the dipstick to  
be sure the level falls between the upper  
and lower marks. Fill with oil if it is below  
the lower mark, or drain to the specified  
level if it is above the upper mark.  
7) Dispose of used oil according to local  
regulations.  
NOTE:  
@
G For disposal of used oil consult your  
Yamaha dealer.  
G The oil should be changed more often  
when the engine is operated under  
adverse conditions such as extended  
trolling.  
@
4-19  
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EMU00380  
CHECKING TIMING BELT  
Inspect the timing-belt and replace it if any  
to the following signs is observed:  
G Cracks in the back of the belt or in the  
base of belt teeth.  
G Excessive wear at the roots of cogs.  
G Rubber portion swollen by oil.  
G Belt surfaces roughened.  
G Signs of wear on edges or outer surface  
of belt.  
G Stretching by 10 mm (0.39 in) or more  
when the belt is pushed with a finger.  
CAUTION:  
@
Consult your Yamaha dealer for replacing  
the timing-belt.  
@
EMU01315  
REPLACING FUSE  
If the fuse has blown on an Electric start  
model, open the fuse box and replace the  
fuse with a spare one of proper amperage,  
using a fuse puller.  
WARNING  
@
Be sure to use the specified fuse. An incor-  
rect fuse or a piece of wire may allow  
excessive current flow. This could cause  
electrical system damage and a fire hazard.  
@
NOTE:  
@
If the new fuse blows again immediately,  
consult a Yamaha dealer.  
@
1 Fuse box  
2 Fuse (10 A)  
3 Spare fuse (10 A)  
4 Fuse puller  
4-20  
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EMU00383  
CHECKING WIRING AND  
CONNECTORS  
1) Check that each grounding wire is prop-  
erly secured.  
2) Check that each connector is engaged  
securely.  
EMU00384  
EXHAUST LEAKAGE  
Start the engine and check that no exhaust  
leaks from the joints between the exhaust  
cover, cylinder head and crank case.  
EMU00385  
WATER LEAKAGE  
Start the engine and check that no water  
leaks from the joints between the exhaust  
cover, cylinder head and crank case.  
4-21  
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EMU01322  
CHECKING POWER TILT SYSTEM  
WARNING  
@
G Never get under the lower unit while it  
is tilted, even when the tilt-support  
knob is locked. Severe injury could  
occur if the outboard accidentally falls.  
G Make sure no one is under the out-  
board before performing this test.  
@
1) Check the power tilt unit for any sign of  
oil leaks.  
2) Operate each of the power tilt switches  
on remote control and engine bottom  
cowling (if equipped) to check that all  
switches work.  
3) Tilt up the motor and check that the tilt  
rod 1 is pushed out completely.  
4) Check that the tilt rod is free of corrosion  
or other flaws.  
5) Operate the motor to tilt down. Check  
that the tilt rod operates smoothly.  
NOTE:  
@
If any operation is abnormal, consult a  
Yamaha dealer.  
@
Recommended fluid;  
Yamaha power trim & tilt fluid or ATF  
(DEXRON-II)  
4-22  
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EMU00388  
CHECKING PROPELLER  
WARNING  
@
You could be seriously injured if the  
engine accidentally starts while you are  
near the propeller.  
G Before inspecting, removing or install-  
ing the propeller, remove the spark  
plug caps from the spark plugs. Also,  
put the shift control in Neutral, put the  
main switch in the OFFposition and  
remove the key, and remove the lan-  
yard from the engine stop switch. Turn  
off the battery cut-off switch if your  
boat has one.  
G Do not use your hand to hold the pro-  
peller when loosening or tightening  
the propeller nut. Put a wood block  
between the cavitation plate and the  
propeller to prevent the propeller from  
turning.  
@
EMU00390  
Propeller Checking Point  
G Check each of the propeller blades for  
wear, erosion from cavitation or ventila-  
tion, or other damage.  
G Check the splines for wear and damage.  
G Check for fish line winding around the  
propeller shaft.  
G Check the propeller shaft oil seal for dam-  
age.  
4-23  
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EMU01504  
F6/F8  
Removing the Propeller  
1) Straighten the cotter pin 1 and pull it  
out using a pair of pliers.  
2) Remove the propeller nut 2, washer 3  
and spacer 4.  
3) Remove the propeller 5, washer 6 and  
spacer 7.  
EMU01505  
T8  
Installing the Propeller  
CAUTION:  
@
G Be sure to install the spacer and  
washer before installing the propeller,  
otherwise, the lower case and propel-  
ler boss may be damaged.  
G Be sure to use a new cotter pin and  
bend the ends over securely, other-  
wise, the propeller could come off dur-  
ing operation and be lost.  
@
1) Apply Yamaha Marine grease or Corro-  
sion resistant grease to the propeller  
shaft.  
2) Install the spacer, washer and propeller  
on the propeller shaft.  
3) Install the spacer, washer and the pro-  
peller nut, and then tighten the nut to the  
specified torque.  
Tightening torque:  
Refer to SPECIFICATIONSpage 4-1.  
4) Align the propeller nut with the propeller  
shaft hole. Insert a new cotter pin in the  
hole and bend the cotter pin ends.  
NOTE:  
@
If the propeller nut does not align with the  
propeller shaft hole after tightening to the  
specified torque, then tighten the nut further  
to align it with the hole.  
@
4-24  
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EMU01460  
CHANGING GEAR OIL  
WARNING  
@
G Be sure the outboard is securely fas-  
tened to the transom or a stable stand.  
You could be severely injured if the  
outboard falls on you.  
G Never get under the lower unit while it  
is tilted, even when the tilt-support  
lever/knob is locked. Severe injury  
could occur if the outboard acciden-  
tally falls.  
@
1) Tilt the outboard motor so that the oil  
drain plug is at the lowest point possible.  
2) Place a suitable container under the  
gear-case.  
3) Remove the oil drain plug 1.  
NOTE:  
@
The oil drain plug is magnetic. Remove all  
metal particles from the plug before rein-  
stalling it.  
@
4) Remove the oil level plug 2 to allow the  
oil to drain completely.  
CAUTION:  
@
Inspect the used oil after it has been  
drained. If the oil is milky, water is getting  
into the gear-case which can cause gear  
damage. Consult a Yamaha dealer for  
repair of the lower unit seals.  
@
NOTE:  
@
For disposal of used oil consult your Yamaha  
dealer.  
@
4-25  
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5) With the outboard motor in a vertical  
position, and using a flexible or pressur-  
ized filling device, inject the gear oil into  
the oil drain plug hole.  
Gear oil grade/capacity:  
Refer to SPECIFICATIONS,page 4-1.  
6) When the oil begins to flow out of the oil  
level plug hole, insert and tighten the oil  
level plug.  
7) Insert and tighten the oil drain plug.  
4-26  
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EMU00401  
CLEANING FUEL TANK  
WARNING  
@
Gasoline (petrol) is highly flammable,  
and its vapors are flammable and explo-  
sive.  
G If you have any question about prop-  
erly doing this procedure, consult your  
Yamaha dealer.  
G Keep away from sparks, cigarettes,  
flames or other sources of ignition  
when cleaning the fuel tank.  
G Remove the fuel tank from the boat  
before cleaning it. Work only outdoors  
in an area with good ventilation.  
G Wipe up any spilled fuel immediately.  
G Reassemble the fuel tank carefully.  
Improper assembly can result in a fuel  
leak, which could result in a fire or  
explosion hazard.  
G Dispose of old gasoline (petrol)accord-  
ing to local regulations.  
@
1) Empty the fuel tank into an approved  
gasoline (petrol) container.  
2) Pour a small amount of suitable solvent  
in the tank. Reinstall the cap and shake  
the tank. Drain the solvent completely.  
EMU00402  
Cleaning the Fuel Filter  
1) Remove the screws holding the fuel  
hose joint assembly. Pull the assembly  
out of the tank.  
2) Clean the filter (located on the end of  
the suction pipe) in a suitable cleaning  
solvent. Allow the filter to dry.  
3) Replace the gasket with a new one.  
Reinstall the fuel hose joint assembly  
and tighten the screws firmly.  
4-27  
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EMU01462  
F6/F8  
INSPECTING AND REPLACING  
ANODE(S)  
Yamaha outboard motors are protected from  
corrosion by sacrificial anodes.  
Check the anodes periodically. Remove  
scales from the surfaces of the anodes.  
For inspection and replacement of anodes,  
consult a Yamaha dealer.  
CAUTION:  
@
Do not paint anodes, as this would ren-  
T8  
der them ineffective.  
@
T8  
4-28  
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EMU00404  
CHECKING BATTERY  
(for Electric start model)  
WARNING  
@
Battery electrolytic fluid is dangerous; it  
contains sulfuric acid and therefore is  
poisonous and highly caustic.  
Always follow these preventive mea-  
sures:  
G Avoid bodily contact with electrolytic  
fluid as it can cause severe burns or  
permanent eye injury.  
G Wear protective eye gear when han-  
dling or working near batteries.  
Antidote (EXTERNAL):  
G SKIN - Flush with water.  
G EYES - Flush with water for 15 minutes  
and get immediate medical attention.  
Antidote (INTERNAL):  
G Drink large quantities of water or milk  
followed by milk of magnesia, beaten  
egg, or vegetable oil. Get immediate  
medical attention.  
Batteries also generate explosive  
hydrogen gas; therefore, you should  
always follow these preventive mea-  
sures:  
G Charge batteries in a well-ventilated  
area.  
G Keep batteries away from fire, sparks,  
or open flames (e.g., welding equip-  
ment, lighted cigarettes, etc.).  
G DO NOT SMOKE when charging or  
handling batteries.  
G KEEP BATTERIES AND ELECTRO-  
LYTIC FLUID OUT OF REACH OF CHIL-  
DREN.  
@
CAUTION:  
@
G A poorly maintained battery will  
quickly deteriorate.  
G Ordinary tap-water contains minerals  
harmful to a battery, and should not be  
used for topping-up.  
@
4-29  
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1) Check the electrolyte level at least once  
a month. Fill to the manufacturers rec-  
ommended level when necessary. Top  
up only with distilled water (or pure de-  
ionized water suitable to use in batter-  
ies).  
2) Keep the battery always in a good state  
of charge. Installing a voltmeter will help  
you monitor your battery. If you will not  
use the boat for a month or more,  
remove the battery from the boat and  
store it in a cool, dark place. Completely  
recharge the battery before using it.  
3) If the battery will be stored for longer  
than a month, check the specific gravity  
of the fluid at least once a month and  
recharge the battery when it is low.  
4-30  
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EMU01279¯  
Connecting the Battery  
WARNING  
@
Mount the battery holder securely in a  
dry, well-ventilated, vibration-free loca-  
tion in the boat. Install a fully charged  
battery in the holder.  
@
CAUTION:  
@
G Make sure the main switch (on applica-  
ble models) is OFFbefore working  
on the battery.  
G Reversal of the battery leads will dam-  
age the rectifier.  
G Connect the RED lead first when  
installing the battery and disconnect  
the RED lead last when removing it.  
Otherwise, the electrical system can  
be damaged.  
G The electrical contacts of the battery  
and cables must be clean and properly  
connected, or the battery will not start  
the engine.  
@
Connect the RED lead to the POSITIVE (+)  
terminal first.  
Then connect the BLACK lead to the NEGA-  
TIVE (-) terminal.  
1 Red lead  
2 Black lead  
3 Battery  
EMU01280  
Disconnecting the Battery  
Disconnect the BLACK lead from the NEGA-  
TIVE (-) terminal first. Then disconnect the  
RED lead from the POSITIVE (+) terminal.  
4-31  
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EMU00408  
CHECKING BOLTS AND NUTS  
1) Check that bolts securing the cylinder  
head and engine and the nut securing  
the flywheel are tightened with their  
specified tightening torque.  
2) Check the tightening torque of other  
bolts and nuts.  
4-32  
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EMU01172  
CLEANING COOLING-WATER  
PASSAGES  
Flushing device equipped model  
Perform this procedure right after operation  
for the most thorough flushing.  
1) After shutting off the engine, unscrew  
the garden-hose connector 2 from the  
fitting 1 on the bottom cowling.  
2) Screw the garden-hose connector 2  
onto a garden hose 3 which is con-  
nected to a fresh-water supply.  
3) With the engine off, turn on the water  
tap and let the water flush through the  
cooling passages for about 15 minutes.  
Turn off the water and disconnect the  
garden hose 3.  
4) When flushing is complete, reinstall the  
garden-hose connector 2 on the fitting  
1 on the bottom cowling. Tighten the  
connector securely.  
CAUTION:  
@
Do not leave the garden-hose connector  
loose on the bottom cowling fitting or let  
the hose hang free during normal opera-  
tion. Water will leak out of the connector  
instead of cooling the engine, which can  
cause serious overheating. Be sure the  
connector is tightened securely on the  
fitting after flushing the engine.  
@
NOTE:  
@
G When flushing the engine with the boat in  
the water, tilting up the engine until it is  
completely out of the water will achieve  
better results.  
G Refer to cooling system flushing instruc-  
tions in TRANSPORTING AND STOR-  
ING OUTBOARD MOTOR.  
@
4-33  
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EMU00409  
MOTOR EXTERIOR  
EMU00410  
Cleaning the Outboard Motor  
After use, wash the exterior of the outboard  
with fresh water. Flush the cooling system  
with fresh water.  
NOTE:  
@
Refer to Flushing Cooling System instruc-  
tions in TRANSPORTING AND STORING  
OUTBOARD MOTOR.  
@
EMU00412  
Checking Painted Surface of Motor  
Check the motor for scratches, nicks, or flak-  
ing paint. Areas with damaged paint are  
more likely to corrode. If necessary, clean  
and paint the areas. A touch-up paint is  
available from a Yamaha dealer.  
EMU00413  
COATING THE BOAT BOTTOM  
A clean hull improves boat performance. The  
boat bottom should be kept as clean of  
marine growths as possible. If necessary, the  
boat bottom can be coated with an anti-fouling  
paint approved for your area to inhibit marine  
growth.  
Do not use anti-fouling paint which includes  
copper or graphite. These paints can cause  
more rapid engine corrosion.  
4-34  
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-MEMO-  
4-35  
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EMU00414  
Chapter 5  
TROUBLE RECOVERY  
TROUBLESHOOTING ...............................5-1  
TEMPORARY ACTION IN  
EMERGENCY .............................................5-4  
Impact damage ........................................5-4  
Power tilt will not operate.........................5-4  
Starter will not operate.............................5-5  
Engine fails to operate.............................5-8  
Treatment of submerged motor...............5-9  
5
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EMU01204¯  
TROUBLESHOOTING  
A problem in the fuel, compression, or ignition systems can cause poor starting, loss of  
power, or other problems. The troubleshooting chart describes basic checks and possible  
remedies. (This chart covers all Yamaha outboard motors. Therefore, some items may not  
apply to your model.)  
If your outboard motor requires repair, bring it to a Yamaha dealer.  
Trouble  
Possible Cause  
Remedy  
1. Battery capacity weak or low.  
1. Check battery condition. Use battery of  
recommended capacity.  
2. Battery connections loose or corroded.  
3. Fuse for electric start circuit blown.  
2. Tighten battery cables and clean bat-  
tery terminals.  
3. Check for cause of electric overload  
and repair. Replace fuse with one of  
correct amperage.  
A. Starter will not  
operate.  
4. Starter components faulty.  
4. Have serviced by a Yamaha dealer.  
5. Engine stop switch lanyard not 5. Attach lanyard.  
attached.  
6. Shift lever in gear.  
6. Shift to neutral.  
1. Fuel tank empty.  
1. Fill tank with clean, fresh fuel.  
2. Fill tank with clean, fresh fuel.  
3. Clean or replace filter.  
2. Fuel contaminated or stale.  
3. Fuel filter clogged.  
4. Starting procedure incorrect.  
5. Fuel pump malfunctions.  
6. Spark plug(s) fouled or incorrect type.  
4. Read STARTING ENGINEsection.  
5. Have serviced by a Yamaha dealer.  
6. Inspect spark plug(s). Clean or replace  
with recommended type.  
B. Engine will not start  
(Starter operates).  
7. Spark plug cap(s) fitted incorrectly.  
7. Check and re-fit cap(s).  
8. Poor connections or damaged ignition 8. Check wires for wear or breaks.  
wiring.  
Tighten all loose connections.  
Replace worn or broken wires.  
9. Ignition parts faulty.  
9. Have serviced by a Yamaha dealer.  
10. Attach lanyard.  
10. Engine stop switch lanyard not  
attached.  
11. Shift lever in gear.  
11. Shift to neutral.  
12. Engine inner parts damaged.  
12. Have serviced by a Yamaha dealer.  
5-1  
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Trouble  
Possible Cause  
Remedy  
1. Spark plug(s) fouled or incorrect type.  
1. Inspect spark plug(s). Clean or replace  
with recommended type.  
2. Fuel system obstructed.  
2. Check for pinched or kinked fuel line or  
other obstructions in fuel system.  
3. Fuel contaminated or stale.  
4. Fuel filter clogged.  
3. Fill tank with clean, fresh fuel.  
4. Clean or replace filter.  
5. Failed ignition parts.  
5. Have serviced by a Yamaha dealer.  
6. Find and correct cause of warning.  
7. Inspect and adjust as specified.  
6. Warning system activated.  
7. Spark plug gap incorrect.  
8. Poor connections or damaged ignition 8. Check wires for wear or breaks.  
wiring.  
Tighten all loose connections.  
Replace worn or broken wires.  
C. Engine idles  
irregularly or stalls.  
9. Specified engine oil not used.  
10. Thermostat faulty or clogged.  
11. Carburetor adjustments incorrect.  
12. Fuel pump damaged.  
9. Check and replace oil as specified.  
10. Have serviced by a Yamaha dealer.  
11. Have serviced by a Yamaha dealer.  
12. Have serviced by a Yamaha dealer.  
13. Open the air vent screw.  
13. Air vent screw on the fuel tank closed.  
14. Choke knob pulled out.  
14. Return to home position.  
15. Motor angle too high.  
15. Return to normal operating position.  
16. Have serviced by a Yamaha dealer.  
17. Connect correctly.  
16. Carburetor clogged.  
17. Fuel joint connection incorrect.  
18. Throttle valve adjustment incorrect.  
19. Battery lead disconnected.  
1. Engine oil level low.  
18. Have serviced by a Yamaha dealer.  
19. Connect securely.  
1. Fill oil tank with specified engine oil.  
2. Specified engine oil not used.  
2. Check and replace oil with specified  
type.  
D. Warning buzzer  
sounds or indicator  
lamp lights.  
3. Engine oil contaminated or deterio- 3. Replace oil with fresh, specified type.  
rated.  
4. Oil filter clogged.  
4. Have serviced by a Yamaha dealer.  
5. Have serviced by a Yamaha dealer.  
5. Oil feed/injection pump malfunctions.  
5-2  
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Trouble  
Possible Cause  
1. Propeller damaged.  
Remedy  
1. Have propeller repaired or replaced.  
2. Propeller pitch or diameter incorrect.  
2. Install correct propeller to operate out-  
board at its recommended speed  
(r/min) range.  
3. Trim angle incorrect.  
3. Adjust trim angle to achieve most effi-  
cient operation.  
4. Motor mounted at incorrect height on 4. Have motor adjusted to proper transom  
transom.  
height.  
5. Warning system activated.  
6. Boat bottom fouled with marine growth.  
7. Spark plug(s) fouled or incorrect type.  
5. Find and correct cause of warning.  
6. Clean boat bottom.  
7. Inspect spark plug(s). Clean or replace  
with recommended type.  
8. Weeds or other foreign matter tangled 8. Remove foreign matter and clean lower  
on gear housing.  
unit.  
9. Fuel system obstructed.  
9. Check for pinched or kinked fuel line or  
other obstructions in fuel system.  
10. Fuel filter clogged.  
10. Clean or replace filter.  
E. Engine power loss.  
11. Fuel contaminated or stale.  
12. Spark plug gap incorrect.  
11. Fill tank with clean, fresh fuel.  
12. Inspect and adjust as specified.  
13. Poor connections or damaged ignition 13. Check wires for wear or breaks.  
wiring.  
Tighten all loose connections.  
Replace worn or broken wires.  
14. Failed ignition parts.  
14. Have serviced by a Yamaha dealer.  
15. Specified engine oil not used.  
15. Check and replace oil with specified  
type.  
16. Thermostat faulty or clogged.  
17. Air vent screw closed.  
16. Have serviced by a Yamaha dealer.  
17. Open the air vent screw.  
18. Fuel pump damaged.  
18. Have serviced by a Yamaha dealer.  
19. Connect correctly.  
19. Fuel joint connection incorrect.  
20. Heat range of spark plug incorrect.  
20. Inspect spark plug and replace it with  
recommended type.  
21. Engine not responding properly to shift 21. Have serviced by a Yamaha dealer.  
lever position.  
1. Propeller damaged.  
1. Have propeller repaired or replaced.  
2. Have serviced by a Yamaha dealer.  
2. Propeller shaft damaged.  
3. Weeds or other foreign matter tangled 3. Remove and clean propeller.  
on propeller.  
F. Engine vibrates  
excessively.  
4. Motor mounting bolt loose.  
4. Tighten bolt.  
5. Steering pivot loose or damaged.  
5. Tighten or have serviced by a Yamaha  
dealer.  
5-3  
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EMU00416  
TEMPORARY ACTION IN  
EMERGENCY  
EMU00417  
IMPACT DAMAGE  
WARNING  
@
The outboard motor can be seriously  
damaged by a collision while operating  
or trailering. Damage could make the  
outboard motor unsafe to operate.  
@
If the outboard motor hits any object in the  
water, follow the procedure below.  
1) Stop the engine immediately.  
2) Inspect control system and all compo-  
nents for damage. Also, inspect the boat  
damage.  
3) However damage is found or not found,  
go back to a nearest harbor slowly and  
carefully.  
4) Have a Yamaha dealer inspection of the  
outboard motor, before operating it  
again.  
EMU01321  
POWER TILT WILL NOT OPERATE  
If the engine cannot be tilted up or down  
with the power tilt because of a discharged  
battery or a failure with the power tilt unit,  
the engine can be tilted manually.  
1 Manual valve screw  
EMU00421¯  
1) Loosen the manual valve screw counter-  
clockwise until it stops.  
2) Put the engine in the desired position,  
then tighten the manual valve screw  
clockwise.  
5-4  
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EMU00423  
STARTER WILL NOT OPERATE  
If the starter mechanism does not operate  
(engine cannot be cranked with the starter),  
the engine can be started with an emer-  
gency starter rope.  
WARNING  
@
G Use this procedure only in an emer-  
gency and only to return to port for  
repairs.  
G When the emergency starter rope is  
used to start the engine, the start-in-  
gear protection device does not oper-  
ate. Make sure the gear shift lever/  
remote control lever is in neutral. Oth-  
erwise, the boat could unexpectedly  
start to move, which could result in an  
accident.  
G Be sure no one is standing behind you  
when pulling the starter rope. It could  
whip behind you and injure someone.  
G An unguarded rotating flywheel is very  
dangerous. Keep loose clothing and  
other objects away when starting the  
engine. Use the emergency starter  
rope only as instructed. Do not touch  
the flywheel or other moving parts  
when the engine is running. Do not  
install the starter mechanism or top  
cowling after the engine is running.  
G Do not touch the ignition coil, high  
voltage wire, spark plug cap or other  
electrical components when starting  
of operating the motor. You could be  
shocked.  
@
5-5  
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E
EMU00950¯  
Emergency Starting Engine  
1) Remove the top cowling.  
2) Remove the start-in-gear protection  
cable from the starter if equipped it.  
3) Remove the starter/flywheel cover after  
removing the bolt(s).  
4) Prepare the engine for starting. See  
STARTING ENGINEfor procedures.  
Be sure the engine is in Neutral and that  
the lock plate is attached to the engine  
stop lanyard switch. The main switch  
must be ONif equipped it.  
5-6  
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E
5) Insert the knotted end of the emergency  
starter rope into the notch in the fly-  
wheel rotor and wind the rope several  
turns clockwise.  
6) Give a strong pull straight out to crank  
and start the engine. Repeat if neces-  
sary.  
5-7  
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E
EMU01363  
ENGINE FAILS TO OPERATE  
If the engine stops unexpectedly, or if the  
engine does not start, you may attempt to  
use the following emergency circuit proce-  
dure. Before using this procedure, be sure to  
check the TROUBLESHOOTINGsection  
to eliminate causes such as low fuel or over-  
heating.  
CAUTION:  
@
G This emergency circuit should only be  
used to return to the nearest harbor for  
repairs in an emergency. Do not use it  
again without getting repairs.  
G When using the emergency circuit the  
engine control systems will not make  
the proper adjustments for operating  
conditions. Operate only at low speed  
(less than one-quarter throttle). Higher  
engine speeds could result in damage  
to the engine.  
@
To start the engine  
1) Adjust the trim so that the engine is ver-  
tical.  
2) Remove the top cowling and locate the  
yellow wire in the harness.  
3) Disconnect the connector for the yellow  
wire. (The control circuit for the CDI unit  
will be connected directly.)  
4) Install the top cowling.  
5) Start the engine using the procedures  
under STARTING THE ENGINE.”  
1 Yellow cord  
5-8  
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E
EMU00446  
TREATMENT OF SUBMERGED  
MOTOR  
If the outboard motor is submerged, immedi-  
ately take it a Yamaha dealer. Otherwise,  
some corrosion may begin almost immedi-  
ately.  
If you cannot immediately take the outboard  
motor to a Yamaha dealer, follow the proce-  
dure bellow for taking care to minimize  
engine damage.  
EMU00448  
1) Thoroughly wash away mud, salt, sea-  
weed, etc. with fresh water.  
2) Remove the spark plug(s), then face the  
spark plug holes downward to allow any  
water, mud or contaminants to drain.  
3) Drain the fuel from the carburetor, fuel  
filter and fuel line. Drain the engine oil  
completely.  
4) Fill the sump with the fresh engine oil as  
the same quantity as the engine oil  
capacity.  
Engine oil capacity:  
Refer to SPECIFICATIONS, Page 4-1.  
5) Feed engine fogging oil or engine oil  
through the carburetor(s) and spark plug  
hole(s) while cranking the engine with  
the manual starter or emergency starter  
rope.  
6) Take the outboard motor to a Yamaha  
dealer as soon as possible.  
CAUTION:  
@
Do not attempt to run the motor until it  
has been completely inspected.  
@
5-9  
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E
EMU00450  
Chapter 6  
INDEX  
INDEX ..........................................................6-1  
6
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E
EMU00451  
E
Electric start model........................................ 3-14  
Electric Start Models...................................... 3-12  
Emergency starting engine.............................. 5-6  
Emission control information ........................... 1-2  
Engine ............................................................. 3-7  
Engine fails to operate..................................... 5-8  
Engine oil....................................................... 1-13  
Engine stop button........................................... 2-7  
Engine stop lanyard switch..................... 2-7, 2-11  
Exhaust leakage............................................ 4-21  
F
Filling fuel ........................................................ 3-8  
Filling fuel tank................................................. 4-6  
Fishing vessel right-of-way.............................. 1-9  
Flushing cooling system and fogging engine... 4-6  
Flushing device.............................................. 2-16  
Forward ......................................................... 3-16  
Fuel.................................................................. 3-6  
Fuel hose joint ................................................. 2-3  
Fueling instructions........................................ 1-11  
Fuel meter ....................................................... 2-3  
Fuel tank.......................................................... 2-3  
Fuel tank cap................................................... 2-3  
G
Gasohol ......................................................... 1-12  
Gasoline (petrol)............................................ 1-12  
Gear shift lever ................................................ 2-5  
Give-way vessel .............................................. 1-7  
Greasing........................................................ 4-12  
I
Identification numbers record .......................... 1-1  
Impact damage................................................ 5-4  
Important labels............................................... 1-6  
Index................................................................ 6-1  
Inspecting and replacing anode(s) ................ 4-28  
Inspecting fuel filter........................................ 4-16  
Installation ....................................................... 3-1  
Installing the Propeller................................... 4-24  
K
INDEX  
A
Adjusting idling speed.................................... 4-17  
Adjusting trim angle ....................................... 3-20  
Air vent screw .................................................. 2-3  
Approval label of emission control certificate... 1-2  
B
Basic boating rules (rules of the road)............. 1-7  
Battery care ..................................................... 4-9  
Battery requirement ....................................... 1-14  
Bow down ...................................................... 3-23  
Bow up........................................................... 3-23  
Breaking in (running in) engine........................ 3-5  
C
Caution labels.................................................. 1-6  
Changing engine oil....................................... 4-18  
Changing gear oil........................................... 4-25  
Checking battery (for electric start model)..... 4-29  
Checking bolts and nuts ................................ 4-32  
Checking fuel system..................................... 4-15  
Checking painted surface of motor................ 4-34  
Checking points ............................................. 4-15  
Checking points after starting engine ............ 3-15  
Checking power tilt system............................ 4-22  
Checking propeller......................................... 4-23  
Checking the engine oil level........................... 3-7  
Checking timing belt ...................................... 4-20  
Checking wiring and connectors.................... 4-21  
Choke knob...................................................... 2-4  
Choke Switch................................................. 2-11  
Clamping the outboard motor .......................... 3-4  
Cleaning and adjusting spark plug................. 4-13  
Cleaning and anti-corrosion measure.............. 4-7  
Cleaning cooling-water passages.................. 4-33  
Cleaning fuel tank.......................................... 4-27  
Cleaning the fuel filter.................................... 4-27  
Cleaning the outboard motor ......................... 4-34  
Coating the boat bottom ................................ 4-34  
Connecting the battery................................... 4-31  
Controls ........................................................... 3-7  
Crossing........................................................... 1-8  
Cruising in other conditions ........................... 3-32  
Cruising in salt water ..................................... 3-32  
Cruising in shallow water......................3-28, 3-30  
Cruising in turbid water.................................. 3-32  
D
Key number ..................................................... 1-1  
L
Low oil pressure warning............................... 2-17  
Lubrication....................................................... 4-8  
M
Main components ............................................ 2-1  
Main switch.................................................... 2-10  
Maintenance chart......................................... 4-11  
Manual start model........................................ 3-11  
Manual tilt model ........................................... 3-20  
Disconnecting the battery .............................. 4-31  
6-1  
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Manufactured date label .................................. 1-2 Specification data ............................................ 4-1  
Meeting............................................................ 1-8 Stand-on vessel............................................... 1-7  
Motor exterior................................................. 4-34 Star labels........................................................ 1-3  
Mounting height ............................................... 3-3 Starter button (for tiller control model)............. 2-4  
Mounting the outboard motor........................... 3-2 Starter will not operate..................................... 5-5  
Multifunction tiller handle ................................. 2-5 Start-in-gear protection.................................. 1-16  
N
Starting engine ................................................ 3-9  
Narrow channels and bends............................ 1-9 Steering and sailing rules and sound signals .. 1-7  
Neutral interlock trigger.................................... 2-9 Steering friction adjusting lever ..................... 2-13  
Neutral throttle lever ...................................... 2-10 Stopping engine............................................. 3-18  
New technology; (4-stroke/HPDI) EM.............. 1-2 Storing outboard motor.................................... 4-5  
North american models.................................... 1-2  
T
O
Temporary action in emergency...................... 5-4  
Oil .................................................................... 3-6 Three stars - ultra low emission....................... 1-3  
One star - low emission ................................... 1-3 Throttle control grip.......................................... 2-6  
Operations of controls and other functions...... 2-3 Throttle friction adjusting knob......................... 2-6  
Other special situations ................................... 1-9 Throttle friction adjusting screw..................... 2-12  
Outboard motor serial number......................... 1-1 Throttle indicator.............................................. 2-6  
Overtaking ....................................................... 1-8 Tiller handle..................................................... 2-5  
P
Tilting up/down .............................................. 3-24  
Periodic maintenance .................................... 4-10 Tilt lock mechanism (for manual tilt model) ... 2-14  
Power tilt switch......................................2-8, 2-12 Tilt support bar............................................... 2-15  
Power tilt unit ................................................. 2-15 Tilt support knob............................................ 2-15  
Power tilt will not operate................................. 5-4 Top cowling lock lever ................................... 2-16  
Power trim/tilt switch...................................... 2-14 Trailering outboard motor ................................ 4-4  
Pre-operation checks....................................... 3-6 Transporting and storing outboard motor ........ 4-4  
Procedure .............................................3-29, 3-30 Transporting outboard when unmounted......... 4-5  
Procedure for remote control model .............. 3-13 Treatment of submerged motor....................... 5-9  
Procedure for tiller control model................... 3-10 Trim angle adjusting rod................................ 2-13  
Procedure for tilting down.....................3-25, 3-27 Trimming outboard motor .............................. 3-19  
Procedure for tilting up..........................3-25, 3-26 Troubleshooting............................................... 5-1  
Propeller checking point ................................ 4-23 Two stars - very low emission ......................... 1-3  
Propeller selection ......................................... 1-15  
W
R
Warming up engine ....................................... 3-15  
Reading buoys and other markers................... 1-9 Warning indicator(s) ...................................... 2-16  
Recoil starter handle (if equipped)................... 2-4 Warning labels................................................. 1-6  
Remote control ................................................ 2-8 Warning system............................................. 2-17  
Remote control lever........................................ 2-9 Water leakage ............................................... 4-21  
Removing the propeller.................................. 4-24  
Replacement parts......................................... 4-10  
Replacing fuse............................................... 4-20  
Returning to original position ......................... 3-29  
Reverse ......................................................... 3-17  
Ring free fuel additive...................................... 3-8  
Rules when encountering vessels ................... 1-8  
S
Safety information............................................ 1-4  
Sailing vessel right-of-way............................... 1-9  
Shifting........................................................... 3-16  
6-2  
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EMU01599  
IMPORTANT WARRANTY INFORMATION FOR U.S.A. AND  
CANADA  
Welcome to the Yamaha Family!  
Congratulations on the purchase of your new Yamaha marine power. Yamaha is com-  
mitted to exceptional customer satisfaction, and we want your ownership experience  
to be a satisfying one. Please read the following warranty information to help ensure  
satisfaction with your Yamaha.  
Yamaha is ready to stand behind your purchase with strong warranty coverage. To be sure  
you receive all the benefits of warranty, please take the following steps:  
1. Be sure your new Yamaha is registered for warranty. Your boat dealer should do this at  
the time of sale. Make sure your dealer gives you a copy of the completed Yamaha reg-  
istration card for your records. If you are unsure whether or not your Yamaha is regis-  
tered, complete the Warranty Registration card found inside the cover of the Owners  
Manual. Mail it to the distributor for the country in which you live (see step 6 for the cor-  
rect address). If your Yamaha is not properly registered, a warranty repair could be  
unnecessarily delayed while registration records are checked.  
2. Read the Limited Warranty statement which follows these instructions. This warranty  
applies to Yamaha outboard motors sold in the United States, whether purchased sepa-  
rately or when supplied as original equipment by a boat builder. The terms also apply to  
original equipment packages sold in Canada, with coverage provided by Yamaha Motor  
Canada (see ‘‘Warranty Guide’’ for Canadian models). This warranty explains the condi-  
tions of the warranty, including the obligations that your dealer and you as the owner  
have under the warranty. For example, your Yamaha outboard must receive a proper  
pre-delivery inspection (PDI) by the selling dealer. Failure to take this important step  
could jeopardize warranty coverage!  
3. If you need warranty repairs, you must take your Yamaha outboard to an authorized  
Yamaha outboard dealer. Be aware that not all selling boat dealers are authorized  
Yamaha dealers. Only authorized dealers have the factory training, special tools, and  
Yamaha support needed to perform warranty repairs.  
4. If you are away from home, or your selling dealer is not an authorized Yamaha dealer,  
use the following toll-free numbers to find the nearest Yamaha dealer.  
United States Dealer Locations:1-800-692-6242  
Canada Dealer Locations:  
1-800-267-8577  
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5. Your warranty applies specifically to repairs made in the country of purchase. If your  
U.S.-purchased Yamaha needs warranty service while in Canada, or your Canadian  
purchased Yamaha needs service while in the United States, Yamaha will assist the  
local dealer whenever possible. However, some products available in one country may  
not be sold or serviced in the other.  
6. If you need any additional information about your Yamaha or warranty coverage which  
your dealer cannot provide, please contact us directly.  
Yamaha Motor Corporation, U.S.A.  
P.O. Box 6555  
Cypress, CA 90630  
Attention: Customer Relations Department  
Telephone No.  
Fax No.  
(714) 761-7439  
(714) 761-7559  
Yamaha Motor Canada Ltd.  
480 Gordon Baker Road  
Toronto, Ontario  
M2H 3B4  
Attention: Customer Relations Department  
Telephone No.  
Fax No.  
(416) 498-1911  
(416) 491-3122  
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EMU01404  
YAMAHA MOTOR CORPORATION, U.S.A. FOUR-STROKE  
OUTBOARD MOTOR THREE-YEAR LIMITED WARRANTY  
Yamaha Motor Corporation, U.S.A. hereby warrants that new Yamaha 1999-or-later model four-stroke outboard motors originally distrib-  
uted by Yamaha Motor Corporation, U.S.A. will be free from defects in material and workmanship for the period of time stated herein, sub-  
ject to certain stated limitations. Warranty coverage for outboards distributed by non-US Yamaha affiliated companies may be different.  
PERIOD OF WARRANTY. Any new Yamaha 1999-or-later model four-stroke outboard motor purchased and registered with Yamaha  
Motor Corporation, U.S.A. for pleasure use in the United States, will be warranted against defects in material or workmanship for a period  
of three (3) years from the date of purchase, subject to exclusions noted herein. Any Yamaha outboard motor purchased and utilized for  
commercial applications will be warranted for a period of one (1) year from the date of purchase, subject to exclusions noted herein.  
Yamaha peripheral equipment included with the motor, such as gauges, fuel tanks, and hoses, remote control boxes, and wiring external  
from the motor unit, will be warranted for one (1) year from the date of purchase of either pleasure or commercial use. Replacement parts  
used in warranty repairs will be warranted for the balance of the applicable warranty period.  
The second and third year of warranty (if applicable) shall be limited to covering the cost of parts and labor for major components only. The  
major components covered are:  
Power Unit Section  
G Power Head  
G Intake Manifold  
G Carburetor Assembly and its Related Components  
G Fuel Injection System and its Related Components  
G Fuel and Oil Pump Assemblies  
G Ignition System (Standard and Microcomputer)  
Lower Unit Section  
G Exhaust System  
G Upper Casing  
G Lower Unit Assembly  
Bracket Section  
G Bracket System  
G Power Trim and Tilt Assembly  
WARRANTY REGISTRATION. To be eligible for warranty coverage, the outboard motor must be registered with Yamaha Motor Corpora-  
tion, U.S.A. Warranty registration can be accomplished by any authorized Yamaha Outboard Motor Dealer. Upon receipt of the registra-  
tion, an Owners Warranty Card will be sent by Yamaha to the registered purchaser.  
OBTAINING REPAIRS UNDER WARRANTY. To receive repairs under this warranty, a valid Owners Warranty Card must be presented to  
an authorized Yamaha Outboard Motor Dealer.  
During the period of warranty, any authorized Yamaha outboard dealer will, free of charge, repair or replace, at Yamahas option, any parts  
adjudged defective by Yamaha due to faulty workmanship or material from the factory. All replaced parts will become the property of  
Yamaha Motor Corporation, U.S.A.  
CUSTOMERS RESPONSIBILITY. Under the terms of this warranty, the customer will be responsible for ensuring that the outboard motor  
is properly operated, maintained, and stored as specified in the applicable Owners Manual.  
The owner of the outboard motor shall give notice to an authorized Yamaha Outboard Motor Dealer of any and all apparent defects within  
ten (10) days of discovery and make the motor available at that time for inspection and repairs at the dealers place of business.  
GENERAL EXCLUSIONS FROM WARRANTY. This warranty will not cover the repair of damage if the damage is a result of abuse or  
neglect of the product. Examples of abuse and neglect include, but are not limited to:  
1.  
2.  
Racing or competition use, modification of original parts, abnormal strain.  
Lack of proper maintenance and off season storage as described in the Owners Manual, installation of parts or accessories that are  
not equivalent in design and quality genuine Yamaha parts.  
3.  
4.  
5.  
6.  
Operation of the motor at an rpm other than specified, use of lubricants or oils that are not suitable for outboard motor use.  
Damage as a result of accidents, collisions, contact with foreign materials, or submersion.  
Growth of marine organism on motor surfaces.  
Normal deterioration.  
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SPECIFIC PARTS EXCLUDED FROM WARRANTY. Parts replaced due to normal wear or routine maintenance such as oil, spark plugs,  
shear pins, propellers, hubs, fuel and oil filters, brushes for the starter motor and power tilt motor, water pump impellers, and anodes, are  
not covered by warranty.  
Charges for removal of the motor from a boat and transporting the motor to and from an authorized Yamaha Outboard Motor Dealer are  
excluded from warranty coverage.  
Specific parts excluded from the second and third year of warranty (if applicable) are:  
G Top and Bottom Cowling  
G Electric Components (other than ignition system)  
G Rubber Components (such as hoses, tubes, rubber seals, fittings, and clamps)  
TRANSFER OF WARRANTY. Transfer of the warranty from the original purchaser to any subsequent purchaser is possible by having the  
motor inspected by an authorized Yamaha Outboard Motor Dealer and requesting the dealer to submit a change of registration to Yamaha  
Motor Corporation, U.S.A. within ten (10) days of the transfer.  
YAMAHA MOTOR CORPORATION, U.S.A. MAKES NO OTHER WARRANTY OF ANY KIND, EXPRESSED OR IMPLIED. ALL  
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE WHICH EXCEED THE OBLIGA-  
TIONS AND TIME LIMITS STATED IN THIS WARRANTY ARE HEREBY DISCLAIMED BY YAMAHA MOTOR CORPORATION, U.S.A.  
AND EXCLUDED FROM THIS WARRANTY.  
SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATIONS  
MAY NOT APPLY TO YOU. ALSO EXCLUDED FROM THIS WARRANTY ARE ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES  
INCLUDING LOSS OF USE. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUEN-  
TIAL DAMAGES, SO THE ABOVE EXCLUSION MAY NOT APPLY TO YOU.  
THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM  
STATE TO STATE.  
YAMAHA MOTOR CORPORATION, U.S.A.  
Post Office Box 6555  
Cypress, California 90630  
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EMU01178  
IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR  
YAMAHA OUTSIDE U.S.A. OR CANADA  
Welcome to the Yamaha Family!  
Congratulations on the purchase of your new Yamaha marine power. Yamaha is com-  
mitted to exceptional customer satisfaction, and we want your ownership experience  
to be a satisfying one. Please read the following warranty information to help ensure  
satisfaction with your Yamaha.  
This model was manufactured as a U.S.A. specification model, and the warranty statement  
shown in this manual is for market. To receive the benefits of the warranty that applies to the  
country in which you use your Yamaha, please note the following information.  
1. The warranty on this model is the same as equivalent models sold in the country where  
you will receive service. If you need more information about your warranty coverage or  
your Yamaha outside the U.S.A. or Canada, please contact an authorized Yamaha  
dealer in your country.  
2. Keep a copy of your sales contract or invoice for the purchase of your Yamaha and  
present it if you need warranty repairs. This document should show the date of pur-  
chase, which is important evidence the repairing dealer will need to be sure your  
Yamaha is covered by warranty.  
3. If your Yamaha needs warranty repairs, contact an authorized Yamaha dealer in the  
country where you are. He will explain how to get warranty service in that country.  
4. This Yamaha model may not be sold in some countries. Therefore, in some cases your  
local dealer may not have all the parts or service information he may need, which may  
unavoidably delay repairs. If this happens, we thank you for your understanding and  
assure you we will attempt to resolve the situation as quickly as possible.  
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YAMAHA MOTOR CORPORATION, USA  
Printed in Japan  
June 2001—0.8 × 1 CR  
68T-28199-13  
(F6AMH, F8CMH, FT8DEHP, FT8DWH, FT8DEP)  
(E)  
Printed on recycled paper  
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