Operator’s Manual
Quantum
600 Series
625 Series
650 Series
675 Series
Model 120000
Quick Start Guide
on page 4
ECopyright Briggs & Stratton Corporation
Form No. 277039-9/06
Printed in U.S.A.
BRIGGSandSTRATTON.com
Milwaukee, Wisconsin 53201 U.S.A.
Know Your Engine
Rewind/Starter
handle
Fuel fill
Oil cap &
Oil dipstick
Choke
(if equipped)
Primer
Muffler
Spark plug
Front
view
Speed
control lever
Air cleaner
Side oil drain plug
(if equipped)
Back
view
3
This manual contains safety information to make you aware of the hazards and risks
associated with engines. Read the Operating Manual before starting your engine.
1
2
3 4
ADD OIL
WHAT KIND?
High quality SAE 30 motor oil.
HOW MUCH?
To FULL line on dipstick.
Engine holds about 20 oz. (0.61l).
HOW?
Unscrew and remove oil cap.
Pour in oil. Replace cap.
FULL
SPECIAL CONCERNS?
WIPE DIPSTICK.
Do not overfill.
Do not tip engine.
REPLACE DIPSTICK
AND TIGHTEN CAP.
REMOVE DIPSTICK
TO READ LEVEL.
See page 10 for details.
1
2
3 4
ADD GAS
WHAT KIND?
Unleaded, 85 octane or higher.
HOW MUCH?
Fill to one inch below top of fuel fill neck.
HOW?
Remove gas cap. Pour in gas. Replace cap.
WARNING
Starting engine creates sparking.
Gasoline and its vapors are
extremely flammable and
explosive. Fire or explosion can
cause severe burns or death.
SPECIAL CONCERNS?
Fuel equipment outdoors. If fuel spills, wait
until it evaporates before starting engine.
If fuel spills, wait until it
evaporates before starting
engine.
See page 12 for details.
DO NOT use pressurized starting
fluids.
4
If ReadyStart™ go to step 4.
1
2
3 4
PUSH PRIMER
HOW MANY TIMES?
Press 5 times the FIRST TIME you start engine.
For all future starts, press 3 times.
HOW?
Locate primer bulb. Press with finger. Wait two
seconds between each press.
SPECIAL CONCERNS?
Pressing primer too many times can flood
engine with gas. A flooded engine will not start.
See Troubleshooting section.
1
2
3 4
PULL STARTER HANDLE
HOW?
Stand behind equipment.
Close bail, or operator control bar, on
equipment with this feature. If you do not keep
bail held against equipment handle, engine will
not start.
Slowly pull cord until you feel resistance, then
pull quickly.
SPECIAL CONCERNS?
WARNING
If speed control equipped, start in FAST position.
Also, see warning at right.
Rapid retraction of starter cord
(kickback) will pull hand and arm
toward engine faster than you can
let go. To avoid kickback, slowly
pull the cord until you feel
If electric start equipped see page 8.
resistance, then pull rapidly.
Broken bones, fractures, bruises or
sprains could result.
To Stop Engine −
Let go of bail, or operator control bar, which
activates brake and stops engine from running.
Rotating parts can contact or
entangle hands, feet, hair, clothing,
or accessories.
For complete starting instructions
see page 8.
Traumatic amputation or severe
laceration can result.
Need assistance? 1-800-233-3723
(USA and Canada ONLY, Pre-recorded message.)
5
Troubleshooting
Starter Handle will not pull.
r The bail, operator control bar, is not
engaged which releases the brake from
the flywheel allowing the engine to turn
over.
WARNING
r Place equipment on flat level surface.
•
Ensure all external equipment/engine loads are removed
before starting engine. Direct coupled equipment
components must be securely attached such as, but not
limited to, blades, impellors, pulleys, sprockets, etc.
Engine will not start.
CAUTION
r Oil Level is OVER FULL
DO NOT OVERFILL OIL.
Overfilling may cause
smoking, hard starting, spark
plug fouling or oil saturation of
air filter.
mark on dipstick.
•
Drain excess oil from engine to bring level to
FULL mark on dipstick.
•
Check air cleaner filter for oil saturation.
If saturated, clean or replace filter.
WARNING
Ensure fuel cap, and air
cleaner are in place
before starting engine.
r Out of Fuel
•
•
Add gasoline.
Prime engine.
•
•
Before refueling − turn
engine OFF and let
engine cool at least 2
minutes before
r Engine Flooded
•
Set choke (if equipped) to OPEN/RUN
position, place throttle (if equipped) in FAST
and continue to pull starter handle.
removing gas cap.
•
•
Check fuel lines, tank,
cap, and fittings for
cracks or leaks.
r Spark Plug Fouling
Replace if necessary.
•
Remove spark plug. Clean, check gap,
replace. See Maintenance section.
Do not crank engine
with spark plug
removed.
Engine is Smoking or Running Rough.
CAUTION
r Engine may have been
If engine is tipped to transport
equipment, to remove debris, to
drain oil, etc., keep the spark
plug side of engine up.
tipped during transport.
•
•
Check for fouled spark plug.
Check air cleaner filter for oil saturation.
If saturated, clean or replace filter.
KEEP SPARK PLUG
UP
6
ReadyStartE Instructions
1.
Check oil level. Ensure level is at FULL mark on
dipstick. Use a high quality motor oil. Check the oil
recommendations for the correct oil type for
expected starting temperature.
WARNING
Make sure spark plug, muffler, fuel
cap and air cleaner are in place.
Do not crank engine with spark plug
removed.
DO NOT start engine if there is a
natural or LP gas leak in area.
If there is natural or LP gas leakage in
area, do not start engine.
Do not use pressurized starting fluids
because vapors are flammable.
•
•
•
•
•
WARNING
2.
3.
Move speed control to FAST, if equipped. Operate
engine in FAST position.
Close bail, operator control bar on equipment with
this feature.
•
•
Start and run engine outdoors.
Do not start or run engine in
enclosed area, even if doors or
windows are open.
WARNING
Rapid retraction of starter cord
(kickback) will pull hand and arm
toward engine faster than you can
let go. To avoid kickback, slowly pull
the cord until you feel resistance,
then pull rapidly.
4.
Start your engine. See options below:
Rewind Start
•
Grasp rope handle. Pull slowly until resistance is
felt, then pull rapidly to start engine and avoid
kickback.
Broken bones, fractures, bruises
or sprains could result.
Rotating parts can contact or
entangle hands, feet, hair,
clothing, or accessories.
WARNING
Traumatic amputation or severe
laceration can result.
CAUTION
To prolong starter life use short starting cycles
(5 seconds maximum, then wait one minute).
Follow equipment manufacturer’s
Electric Start
•
•
Insert key and turn to START.
Allow engine to warm up.
recommendations for charging battery.
Go to Operating Engine on page 9.
7
Starting Instructions
1.
Check oil level. Ensure level is at FULL mark on
dipstick. Use a high quality motor oil. Check the oil
recommendations for the correct oil type for
expected starting temperature.
WARNING
Make sure spark plug, muffler, fuel
cap and air cleaner are in place.
Do not crank engine with spark plug
removed.
DO NOT start engine if there is a
natural or LP gas leak in area.
If there is natural or LP gas leakage in
area, do not start engine.
Do not use pressurized starting fluids
because vapors are flammable.
•
•
•
•
•
2.
3.
Open fuel shut-off valve1/4 turn, if equipped.
Firmly push primer bulb 3 times, if equipped.
WARNING
•
Start and run engine outdoors.
•
Do not start or run engine in
enclosed area, even if doors or
windows are open.
4.
Move speed control to FAST, if equipped. Operate
engine in FAST position.
5.
6.
Close bail, operator control bar on equipment with
this feature.
WARNING
Rapid retraction of starter cord
(kickback) will pull hand and arm
toward engine faster than you can
let go. To avoid kickback, slowly pull
the cord until you feel resistance,
then pull rapidly.
Start your engine. See options below:
Rewind Start
Broken bones, fractures, bruises
or sprains could result.
•
Grasp rope handle. Pull slowly until resistance is
felt, then pull rapidly to start engine and avoid
kickback.
Rotating parts can contact or
entangle hands, feet, hair,
clothing, or accessories.
Traumatic amputation or severe
laceration can result.
WARNING
CAUTION
To prolong starter life use short starting cycles
(5 seconds maximum, then wait one minute).
Follow equipment manufacturer’s
Electric Start
•
Insert key and turn to START.
recommendations for charging battery.
•
Allow engine to warm up.
8
Operating Engine
After engine has started, let it warm up several seconds
to several minutes, depending on outside temperature.
For maximum performance and life, operate engine
with speed control in FAST, if equipped.
WARNING
Running engines produce heat.
Engine parts, especially muffler,
become extremely hot.
•
Do not tip engine or equipment at angle which
causes gasoline to spill.
Severe thermal burns can occur on
contact.
Periodically remove grass buildup under mower deck.
See Maintenance section.
Combustible debris, such as
leaves, grass, brush, etc. can catch
fire.
WARNING
Engines give off carbon monoxide,
an odorless, colorless, poison
gas.
•
•
•
Allow muffler, engine cylinder and fins to cool
before touching.
Remove accumulated combustibles from
muffler area and cylinder area.
Install and maintain in working order a spark
arrester before using equipment on
forest-covered, grass-covered, brush-covered
unimproved land. The state of California
requires this (Section 4442 of the California
Public Resources Code). Other states may
have similar laws. Federal laws apply on
federal land.
Breathing carbon monoxide can
cause nausea, fainting or death.
WARNING
•
•
•
•
Operate equipment with guards in
place.
Keep hands and feet away from
rotating parts.
Tie up long hair and remove
jewelry.
Do not wear loose-fitting clothing,
dangling drawstrings or items that
could become caught.
Stopping Engine
Depending on how your engine is equipped follow the
steps below:
CAUTION
Do not stop engine by moving choke control to
CHOKE (if equipped). Backfire, fire or engine
damage could occur.
1.
Move speed control to SLOW then to STOP, then
release bail − OR −
Push stop switch to OFF − OR −
2.
3.
4.
Turn key to OFF. Remove key and store out of
reach of children.
Close fuel shut-off valve if equipped.
9
Oil
Capacity
Recommendation
The engine holds approximately (18 oz.; 0.5 liter).
Viscosity Grades
•
•
•
Use a high quality SAE 30 weight motor oil.
Do not use special additives.
Choose a viscosity according to the table opposite.
**
*
Note: Synthetic oil meeting ILSAC
GF-2, API certification mark and API
service symbol (shown at left) with
“SJ/CF ENERGY CONSERVING” or
higher, is an acceptable oil at all
temperatures. Use of synthetic oil
does not alter required oil change
intervals.
-20
-30
0
20
32 40
0
60
80
100
40
°F
°C
-20
-10
10
20
30
STARTING TEMPERATURE RANGE BEFORE NEXT OIL CHANGE
CAUTION
*
Air cooled engines run hotter than automotive
engines. The use of non-synthetic multi-viscosity oils
(5W-30, 10W-30, etc.) in temperatures above 40° F
(4° C) will result in higher than normal oil
consumption. When using a multi-viscosity oil, check
oil level more frequently.
** 30 weight oil, if used below 40° F (4° C), will result in
hard starting and possible engine bore damage due
to inadequate lubrication.
•
•
•
Check oil level before starting the engine.
Check level daily, or after every eight (8) hours.
Keep oil level at FULL.
Checking Oil Level
1.
Place engine level
and clean around oil
fill area.
2.
3.
Remove dipstick and
wipe clean with cloth.
Replace and tighten
dipstick. Remove and
check oil level. Oil lev-
el should be at FULL
line on dipstick.
4.
5.
If needed, add oil
slowly - recheck. Do
not over fill.
Wipe dipstick clean,
replace and tighten.
Remove and check oil
level. Oil level should
be at FULL line on
dipstick.
CAUTION
Do not overfill. Overfilling with oil may cause the
engine to not start, or hard starting. If over the
FULL mark on dipstick, drain oil to reduce oil
level to FULL mark on dipstick.
10
Changing Oil
Change oil after first 5 to 8 hours of use, then every 50
hours or every season. Change oil every 25 hours when
operating the engine under heavy load or in high
temperatures.
CAUTION
Used oil is a hazardous waste product. Dispose
of used oil properly. Do not discard with
household waste. Check with your local
authorities, service center, or dealer for safe
disposal/recycling facilities.
1.
Run engine until it runs out of fuel. Otherwise, fuel
can leak out, creating a fire/explosion hazard,
when you tip engine in Step 4.
2.
Disconnect spark plug wire and keep it away from
spark plug.
3.
4.
With engine OFF but still warm remove dipstick.
WARNING
Top oil drain, keep spark plug side up. Bottom or
side oil drain (if equipped), keep engine level.
Drain oil into appropriate receptacle.
On bottom oil drain, DO NOT rotate blade or
any other parts unless spark plug wire is
disconnected from spark plug.
Note: Top oil drain is recommended method,
however oil can drain from side (if
equipped) or bottom as shown.
5.
6.
Place engine level. Add about (18 oz. or 0.5 liter)
new oil. Fill to FULL line on dipstick. Do not
overfill. Replace dipstick.
DRAIN
PLUGS
3/8”
SQUARE
PIPE
Replace spark plug wire before starting.
SPARK PLUG
CUTTING
BLADE
OIL DRAIN
PLUG
RATCHET
AND
EXTENSION
Bottom Oil Drain
Top Oil Drain
High Oil Fill
(if equipped)
Low Oil Fill
(if equipped)
Side Oil Drain
(if equipped)
Fuel
Type to Use
CAUTION
•
Use clean, fresh, regular unleaded gasoline with a
minimum of 85 octane. Fresh fuel prevents gum from
forming in the fuel system or on essential carburetor
parts. Purchase fuel in quantity that can be used
within 30 days.
Some fuels, called oxygenated or reformulated
gasoline, are gasoline blended with alcohols or
ethers. Excessive amounts of these blends can
damage the fuel system or cause performance
problems. If any undesirable operating
symptoms occur, use gasoline with a lower
percentage of alcohol or ether.
•
•
•
Do not use gasoline which contains Methanol.
Do not mix oil with gasoline.
For engine protection use Briggs & Stratton
Gasoline Additive available from your Authorized
Briggs & Stratton Dealer.
•
This engine is certified to operate on gasoline.
Exhaust Emission Control System: EM (Engine
Modifications).
11
Adding Fuel
1.
Remove cap. Fill tank to approximately one inch
below top of neck to allow for fuel expansion. Be
careful not to overfill.
WARNING
Turn engine OFF and let engine
cool at least 2 minutes before
removing gas cap.
2.
Replace cap before starting.
•
Fuel Fill
•
•
Fill fuel tank outdoors or in
well-ventilated area.
Do not overfill fuel tank. Fill tank to
approximately 1 inches below top of
neck to allow for fuel expansion.
•
•
If fuel spills, wait until it evaporates
before starting engine.
Keep gasoline away from sparks,
open flames, pilot lights, heat, and
other ignition sources.
•
Check fuel lines, tank, cap, and
fittings frequently for cracks or
leaks. Replace if necessary.
Fresh StartE Fuel Cap
DANGER
Your engine may be equipped with
a Fresh Start fuel cap.
Contents are HARMFUL OR FATAL IF
SWALLOWED. Avoid contact to eyes,
skin, or clothing. Do not take internally.
Avoid breathing the mist or vapor.
Overexposure to eyes or skin can
cause irritation. KEEP STABILIZER
OUT OF THE REACH OF CHILDREN.
Fuel stabilizer is a hazardous
chemical.**
•
•
IF SWALLOWED, call physician immediately.
Do not induce vomiting. If inhaled, remove to
fresh air. In case of eye or skin contact, flush
with water for 15 minutes.
Cartridge is shown with tab
partially removed.
Store unopened cartridges in a cool, dry,
well-ventilated area. Keep open cartridge in
fuel cap, and fuel cap closed on fuel tank when
not in use.
Fresh Start fuel cap is designed to
hold a cartridge which contains fuel stabilizer.
** Fuel stabilizer contains: 2,6-di-tert-butylphenol (128-39-2)
and aliphatic petroleum distillate (64742-47-8).
1.
2.
3.
4.
5.
Place silver foil seal end of cartridge into fuel cap.
Press to “snap” cartridge into place.
Remove the white tab to expose membrane.
Reinstall fuel cap on engine fuel tank.
•
In case of emergency, contact a physician
immediately and call 1-800-424-9300 for material
safety information.
Check periodically − if empty, remove and
replace.
12
Engine Specifications
This is a single cylinder, L-head, air-cooled engine. It is
a low emissions engine.
Technical Information
Engine Power Rating Information
In the state of California, model 120000 engine covered
in this manual is certified by the California Air
Resources Board to meet emissions standards for 125
hours. Such certification does not grant the purchaser,
owner or operator of this engine any additional
warranties with respect to the performance or
operational life of this engine. This engine is warranted
solely according to the product and emissions
warranties stated elsewhere in this manual.
The gross power rating for individual gas engine models is
labeled in accordance with SAE (Society of Automotive
Engineers) code J1940 (Small Engine Power & Torque Rating
Procedure), and rating performance has been obtained and
corrected in accordance with SAE J1995 (Revision 2002-05).
Actual gross engine power will be lower and is affected by,
among other things, ambient operating conditions and
engine-to-engine variability. Given both the wide array of
products on which engines are placed and the variety of
environmental issues applicable to operating the equipment,
the gas engine will not develop the rated gross power when
used in a given piece of power equipment (actual “on-site” or
net horsepower). This difference is due to a variety of factors
including, but not limited to, accessories (air cleaner, exhaust,
charging, cooling, carburetor, fuel pump, etc.), application
limitations, ambient operating conditions (temperature,
humidity, altitude), and engine-to-engine variability. Due to
manufacturing and capacity limitations, Briggs & Stratton may
substitute an engine of higher rated power for this Series
engine.
Model 120000
Bore . . . . . . . . . . . . . . . . . . . . . . . . 2-11/16 in. (68.26 mm)
Stroke . . . . . . . . . . . . . . . . . . . . . . . 2-3/64 in. (51.99 mm)
Displacement . . . . . . . . . . . . . . . . 11.57 cu. in. (189.6cc)
Tune-up Specifications
Armature air gap . . 0.006 − 0.010 in. (0.15 − 0.25 mm)
Emission Information
Spark plug gap . . . . . . . . . . . . . . . . . 0.030 in. (0.76 mm)
Engines that are certified to meet the California Air
Resources Board (CARB) Tier 2 Emission Standards
must display information regarding the Emissions
Durability Period and the Air Index. Briggs & Stratton
makes this information available to the consumer on
our emission labels. The engine emission label will
indicate certification information.
Valve clearance with valve springs installed and piston 1/4
in. (6 mm) past top dead center (check when engine is
cold). See Repair Manual P/N 270962.
Intake . . . . . . . . . . . . 0.005 − 0.007 in. (0.13 − 0.18 mm)
Exhaust . . . . . . . . . . 0.007 − 0.009 in. (0.18 − 0.23 mm)
The Emissions Durability Period describes the
number of hours of actual running time for which the
engine is certified to be emissions compliant, assuming
proper maintenance in accordance with the Operating
& Maintenance Instructions. The following categories
are used:
Note: For practical operation, the horsepower loading should
not exceed 85% of rated horsepower. Engine power will
decrease 3-1/2% for each 1,000 feet (300 meters) above sea
level and 1% for each 10° F (5.6° C) above 77° F (25° C). It
will operate satisfactorily at an angle up to 15°.
Moderate:
Engine is certified to be emission compliant for 125
hours of actual engine running time.
Model, Type and Code Number
Intermediate:
Engine is certified to be emission compliant for 250
hours of actual engine running time.
To get replacement parts or technical assistance in the
future write you engine Model, Type and Code number
along with the date of purchase here. These numbers are
located on your engine. For the location, see Engine
Features.
Extended:
Engine is certified to be emission compliant for 500
hours of actual engine running time. For example, a
typical walk-behind lawn mower is used 20 to 25 hours
per year. Therefore, the Emissions Durability Period
of an engine with an intermediate rating would equate
to 10 to 12 years.
Model
Type
Certain Briggs & Stratton engines will be certified to
meet the United States Environmental Protection
Agency (USEPA) Phase 2 emission standards. For
Phase 2 certified engines, the Emissions Compliance
Period referred to on the Emissions Compliance label
indicates the number of operating hours for which the
engine has been shown to meet Federal emission
requirements.
Code
For engines less than 225 cc displacement.
Category C = 125 hours
Category B = 250 hours
Category A = 500 hours
Month/Day/Year
For engines of 225 cc or more displacement.
Category C = 250 hours
Category B = 500 hours
Category A = 1000 hours.
13
WARNING
Unintentional sparking can result
in fire or electric shock.
Engine Maintenance
Regular maintenance will improve the performance and
extend the life of the engine. See any Authorized Briggs
& Stratton Dealer for service. Use only genuine
Briggs & Stratton parts. Other parts may not
perform as well, may damage the engine, and may
result in injury. In addition, use of other parts may void
your warranty.
Fire or explosion can cause
severe burns or death.
Unintentional start-up can result
in entanglement, traumatic
amputation, or laceration.
Emission Control
Before performing maintenance:
Maintenance, replacement or repair of the emission
control devices and systems may be performed by
any nonroad engine repair establishment or
individual. However, to obtain no charge repairs under
the terms and provisions of the Briggs & Stratton
warranty statement, any service or emission control
part repair or replacement must be performed by a
factory authorized dealer. See Emission Warranty
section for details.
•
Disconnect spark plug wire and
keep it away from spark plug.
•
Disconnect battery at negative
terminal (only engines with electric
start).
•
Do not strike the flywheel with a
hammer or hard object because
the flywheel may later shatter
during operation.
•
•
Do not tamper with governor
spring, links or other parts to
increase engine speed.
Use only correct tools.
When testing for spark:
•
•
Use approved spark plug tester.
Do not check for spark with spark
plug removed.
Follow the instructions and schedules indicated below.
Task
Perform task at hourly
or calendar interval,
whichever comes first.
Check Oil Level
Change Oil *
Service foam air cleaner element **
Replace spark
plug
Inspect spark arrester (if equipped)
Clean air cooling system **
Clean combustion chamber
*
Change oil after first 5 to 8 hours of use, then every 50 hours or every season. Change oil every 25 hours
when operating the engine under heavy load or in high temperatures.
** Clean more often under dusty conditions or when airborne debris is present. Replace air cleaner parts, if very
dirty.
***On string trimmer applications:− clean debris at each refueling, sooner if needed
(see CLEANING DEBRIS section);− have qualified technician clean air cooling system every 30 hours, every
season, or sooner if needed, especially in high debris conditions (see AIR COOLING SYSTEM section).
14
Air Cleaner
All engines have an air cleaner cartridge. The cartridge
is either flat or oval (see illustrations). In addition, some
engines have a pre-cleaner.
CAUTION
Do not use pressurized air or solvents to clean
cartridge. Pressurized air can damage cartridge;
solvents will dissolve cartridge.
Pre-cleaner
To clean pre-cleaner (if equipped), separate it from
cartridge and wash in liquid detergent and water. Air dry
thoroughly. Do not oil. Re-assemble dry pre-cleaner on
clean cartridge.
Flat Air Cleaner
1.
2.
Loosen screw and tilt cover down.
Remove air filter.
Ë
3.
Install new filter with the lip of pre-cleaner Ê, if
equipped, at bottom of cartridge pleats.
Ë
4.
5.
Insert cover’s tabs into slots in bottom of base.
Tilt cover up into place and tighten screw.
Ê
Oval Air Cleaner
1.
2.
Loosen two screws Ê and lift off cover.
Ê
Remove air cleaner cartridge Ë and pre-cleaner
Ì if equipped, carefully from base to ensure no
debris falls into engine.
3.
4.
Place new pre-cleaner on cartridge and re-install
new cartridge assembly securely into base.
Ë
Ì
Place cover over air cleaner and tighten screws.
Spark Plug
Ë
Check the spark plug every 100 hours. Replace the
spark plug if upon inspection the electrodes Ê are
burned or worn. Ensure the spark plug is clean. Check
the gap Ë with a feeler gage Ì and reset to .51 mm or
0.20 in. if necessary. Use only Briggs & Stratton Spark
Tester (part number 19368) to check for spark.
Ê
Ì
Note: In some areas, local law requires using resistor
spark plug to suppress ignition signals. If this
engine was originally equipped with resistor
spark plug, use same type for replacement.
15
Combustion Deposits
We recommend that after every 100-300 hours you have an authorized Briggs & Stratton Service Dealer remove
combustion deposits from the cylinder, cylinder head, top of piston, and around valves.
Muffler
Replacement parts for the muffler must be the same
and installed in the same position as the original parts,
otherwise fire can occur.
WARNING
Fuel System
Drain fuel tank or close fuel shut-off valve before
replacing fuel filter. Otherwise, fuel can leak out
creating a fire/explosion hazard.
WARNING
Replacement parts for fuel system (cap, hoses, tanks,
filters, etc.) must be the same as original parts,
otherwise fire can occur.
Air Cooling System
Over time debris may accumulate in cylinder cooling fins and cannot be observed without partial engine disassembly. For
this reason, we recommend that you have an authorized Briggs & Stratton Service Dealer clean the air cooling system
per recommended intervals. Equally important is to keep top of engine free from debris. See Cleaning Debris section.
Cleaning Debris
Daily or before every use, clean grass, chaff or
accumulated debris from engine. Keep linkage, spring
CAUTION
and controls clean. Keep area around and behind
Do not use water to clean engine parts. Water
muffler free of any combustible debris.
could contaminate fuel system. Use a brush or dry
Keeping engine clean allows air movement around
cloth.
engine.
Engine parts should be kept clean to reduce the risk of
overheating and ignition of accumulated debris. This is
especially important if cutting tall grass.
On string trimmer applications clean accumulated
debris at each refueling, sooner if needed.
WARNING
Clean all areas shown below.
Finger Guard
Muffler Area & Spark Arrester
Linkage, Springs
& Controls
Carburetor Adjustment
The carburetor on this engine is not adjustable.
WARNING
The manufacturer of the equipment on which
this engine is installed specifies top speed at
which the engine will be operated. DO NOT
EXCEED this speed.
Electric Start Engine
Follow equipment manufacturer’s recommendation for
charging battery.
16
Storage
Engines stored over 30 days need special attention.
1.
To prevent gum from forming in fuel system or on
essential carburetor parts:
WARNING
When Transporting Equipment:
a) if fuel tank contains oxygenated or reformulated
gasoline (gasoline blended with an alcohol or an
ether), run engine until it stops from lack of fuel,
or b) if fuel tank contains gasoline, either run engine
until it stops from lack of fuel, or add a gasoline
additive to the gas in the tank. (See parts list.
Single − use pouches of gas additive are available
from your service dealer.) If you use a gas additive,
run the engine for several minutes to circulate the
additive through the carburetor. Then, engine and
fuel can be stored up to 24 months.
•
Transport with fuel tank EMPTY
or with fuel shut-off valve OFF.
When storing gasoline or
equipment with fuel in tank:
•
Store away from furnaces,
stoves, water heaters, or other
appliances that have a pilot light
or other ignition source because
they can ignite gasoline vapors.
2.
3.
While engine is still warm, change oil.
Remove spark plug and pour about 1/2 oz. (15 ml)
of engine oil into cylinder. Replace spark plug and
crank slowly to distribute oil.
4.
5.
Clean engine of surface debris, chaff or grass.
Store in a clean, dry area. Do not store in same
area as a stove, furnace, water heater, or other
appliance that uses a pilot light or has a device
that can create a spark.
Service
See an Authorized Briggs & Stratton Service Dealer.
Each one carries a stock of Genuine Briggs & Stratton
Parts and is equipped with special service tools.
Trained mechanics assure expert repair service on all
Briggs & Stratton engines. Only dealers advertising as
“Authorized Briggs & Stratton” are required to meet
Briggs & Stratton standards When you purchase
equipment powered by a Briggs & Stratton engine, you
are assured of highly skilled, reliable service at more
than 30,000 Authorized Service Dealers worldwide,
including more than 6,000 Master Service Technicians.
Look for these signs wherever Briggs & Stratton service
is offered.
PARTIAL LIST OF
GENUINE BRIGGS & STRATTON PARTS
PART
PART NO.
Flat air cleaner cartridge . . . . . . . . . . . 49158 −or− 5043
Flat air cleaner pre-cleaner . . . . . . . . . . . . . . . . . 493537
Oval air cleaner cartridge . . . . . . . . . . . . . . . . . . . 497725
Oval air pre-cleaner . . . . . . . . . . . . . . . . . . . . . . . . 273185
Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . 100005 −or− 100028
Fuel filter . . . . . . . . . . . . . . . . . . . . . . . 298090 −or− 5018
Gas additive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5041
Resistor spark plug . . . . . . . . . . . . . . . . . . . . . . . . 802592
Standard spark plug . . . . . . . . . . . . . . . . . . . . . . . 492167
Long life platinum spark plug . . . . . . . . . . . . . . . . . . 5062
(used on most L-head engines)
Spark plug wrench . . . . . . . . . . . . . . . . . . . . . . . . . . 89838
Spark tester . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19368
Oil pump kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5056
(uses standard electric drill to remove oil from engine
quickly)
An illustrated shop manual includes common
specifications and detailed information covering
adjustment, tune-up and repair of Briggs & Stratton single
cylinder, L-head, 4 cycle engines. It is available for
purchase from an Authorized Briggs & Stratton Service
Dealer or you can order it from
You may locate your nearest Authorized Briggs & Stratton
Service Dealer in our dealer locator map on our web site
or in the “Yellow Pagest” directory under “Engines,
Gasoline” or “Gasoline Engines” or “Lawn Mowers” or
similar category.
™
Note: Walking fingers logo and “Yellow Pages” are
registered trademarks in various jurisdictions.
17
Warranty Information
Briggs & Stratton Corporation (B&S), the California Air Resources Board (CARB)
and the United States Environmental Protection Agency (U.S. EPA)
Emissions Control System Warranty Statement
(Owner’s Defect Warranty Rights and Obligations)
The California Air Resources Board (CARB), U.S. EPA and
B&S are pleased to explain the Emissions Control System
Warranty on your small off-road engine (SORE). In
California, new small off-road engines model year 2006 and
later must be designed, built and equipped to meet the
State’s stringent anti-smog standards.
Elsewhere in the United States, new non-road, spark-ignition
engines certified for model year 1997 and later must meet
similar standards set forth by the U.S. EPA. B&S must
warrant the emissions control system on your engine for the
periods of time listed below, provided there has been no
abuse, neglect or improper maintenance of your small
off-road engine.
Your emissions control system includes parts such as the
carburetor, air cleaner, ignition system, fuel line, muffler and
catalytic converter. Also included may be connectors and
other emissions related assemblies.
Where a warrantable condition exists, B&S will repair your
small off-road engine at no cost to you including diagnosis,
parts and labor.
Briggs & Stratton Emissions Control Defects Warranty Coverage
Small off-road engines are warranted relative to emissions control parts defects for a period of two years, subject to provisions set
forth below. If any covered part on your engine is defective, the part will be repaired or replaced by B&S.
Owner’s Warranty Responsibilities
As the small off-road engine owner, you are responsible for
the performance of the required maintenance listed in your
Operating and Maintenance Instructions. B&S recommends
that you retain all your receipts covering maintenance on
your small off-road engine, but B&S cannot deny warranty
solely for the lack of receipts or for your failure to ensure the
performance of all scheduled maintenance.
As the small off-road engine owner, you should however be
aware that B&S may deny you warranty coverage if your
small off-road engine or a part has failed due to abuse,
You are responsible for presenting your small off-road engine
to an Authorized B&S Service Dealer as soon as a problem
exists.
The undisputed warranty repairs should be completed in a
reasonable amount of time, not to exceed 30 days.
If you have any questions regarding your warranty rights and
responsibilities, you should contact
Representative at 1-414-259-5262.
a
B&S Service
The emissions warranty is a defects warranty. Defects are
judged on normal engine performance. The warranty is not
related to an in-use emissions test.
neglect,
improper
maintenance
or
unapproved
modifications.
Briggs & Stratton Emissions Control Defects Warranty Provisions
The following are specific provisions relative to your Emissions Control Defects Warranty Coverage. It is in addition to the B&S
engine warranty for non-regulated engines found in the Operating and Maintenance Instructions.
1. Warranted Parts
performed at no charge to the owner, including
diagnostic labor which leads to the determination that a
Warranted Part is defective, if the diagnostic work is
performed at an Authorized B&S Service Dealer. For
emissions warranty service contact your nearest
Authorized B&S Service Dealer as listed in the “Yellow
Pages” under “Engines, Gasoline,” “Gasoline Engines,”
“Lawn Mowers,” or similar category.
Coverage under this warranty extends only to the parts
listed below (the emissions control systems parts) to the
extent these parts were present on the engine
purchased.
a. Fuel Metering System
•
•
•
•
•
•
Cold start enrichment system
Carburetor and internal parts
Fuel Pump
4. Claims and Coverage Exclusions
Fuel line, fuel line fittings, clamps
Fuel tank, cap and tether
Carbon canister
Warranty claims shall be filed in accordance with the
provisions of the B&S Engine Warranty Policy. Warranty
coverage shall be excluded for failures of Warranted
Parts which are not original B&S parts or because of
abuse, neglect or improper maintenance as set forth in
the B&S Engine Warranty Policy. B&S is not liable to
cover failures of Warranted Parts caused by the use of
add-on, non-original, or modified parts.
b. Air Induction System
•
•
•
Air cleaner
Intake manifold
Purge and vent line
c. Ignition System
•
Spark plug(s)
Magneto ignition system
5. Maintenance
•
Any Warranted Part which is not scheduled for
replacement as required maintenance or which is
scheduled only for regular inspection to the effect of
“repair or replace as necessary” shall be warranted as to
defects for the warranty period. Any Warranted Part which
is scheduled for replacement as required maintenance
shall be warranted as to defects only for the period of time
up to the first scheduled replacement for that part. Any
replacement part that is equivalent in performance and
durability may be used in the performance of any
maintenance or repairs. The owner is responsible for the
performance of all required maintenance, as defined in
the B&S Operating and Maintenance Instructions.
6. Consequential Coverage
d. Catalyst System
•
•
•
Catalytic converter
Exhaust manifold
Air injection system, Pulse valve
e. Miscellaneous Items
•
•
Vacuum, temperature, position, time sensitive
valves and switches
Connectors and assemblies
2. Length of Coverage
B&S warrants to the initial owner and each subsequent
purchaser that the Warranted Parts shall be free from
defects in materials and workmanship which caused the
failure of the Warranted Parts for a period of two years
from the date the engine is delivered to a retail purchaser.
3. No Charge
Coverage hereunder shall extend to the failure of any
engine components caused by the failure of any
Warranted Part still under warranty.
Repair or replacement of any Warranted Part will be
18
BRIGGS & STRATTON ENGINE OWNER WARRANTY POLICY
Effective September 1, 2006
LIMITED WARRANTY
Briggs & Stratton Corporation will repair or replace, free of charge, any part(s) of the engine that is defective
in material or workmanship or both. Transportation charges on parts submitted for repair or replacement
under this warranty must be borne by purchaser. This warranty is effective for and is subject to the time
periods and conditions stated below. For warranty service, find the nearest Authorized Service Dealer in
‘Yellow Pages™’.
THERE IS NO OTHER EXPRESS WARRANTY. IMPLIED WARRANTIES, INCLUDING THOSE OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED TO ONE YEAR FROM
PURCHASE, OR TO THE EXTENT PERMITTED BY LAW ANY AND ALL IMPLIED WARRANTIES ARE
EXCLUDED. LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES ARE EXCLUDED TO THE
EXTENT EXCLUSION IS PERMITTED BY LAW. Some states or countries do not allow limitations on how
long an implied warranty lasts, and some states or countries do not allow the exclusion or limitation of
incidental or consequential damages, so the above limitation and 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 and
country to country.
WARRANTY TERMS **
Brand / Product Type
Consumer Use
2 years
2 years
2 years
1 year
Commercial Use
2 years
1 year
180 days
90 days
90 days
Vanguard
Extended Life Series
t
t
I/CR , Intek I/CR , Intek Pro
t
Kerosene Fuel Operated Engines
All Other Briggs & Stratton Engines
2 years
** Engines used on Home Standby Generator applications are warranted under consumer use only.
This warranty does not apply to engines on equipment used for prime power in place of a utility.
Engines used in competitive racing or on commercial or rental tracks are not warranted.
The warranty period begins on the date of purchase by the first retail consumer or commercial end user, and
continues for the period of time stated in the table above. “Consumer use” means personal residential household use
by a retail consumer. “Commercial use” means all other uses, including use for commercial, income producing or
rental purposes. Once an engine has experienced commercial use, it shall thereafter be considered as a commercial
use engine for purposes of this warranty.
NO WARRANTY REGISTRATION IS NECESSARY TO OBTAIN WARRANTY ON BRIGGS & STRATTON
PRODUCTS. SAVE YOUR PROOF OF PURCHASE RECEIPT. IF YOU DO NOT PROVIDE PROOF OF THE
INITIAL PURCHASE DATE AT THE TIME WARRANTY SERVICE IS REQUESTED, THE MANUFACTURING
DATE OF THE PRODUCT WILL BE USED TO DETERMINE THE WARRANTY PERIOD.
Briggs & Stratton Engines Are Made Under One Or More Of The Following Patents: Design D-247,177 (Other Patents Pending)
6,691,683
6,647,942
6,622,683
6,615,787
6,617,725
6,603,227
6,595,897
6,595,176
6,584,964
6,557,833
6,542,074
6,520,141
6,495,267
6,494,175
6,472,790
6,460,502
6,456,515
6,382,166
6,369,532
6,356,003
6,349,688
6,347,614
6,325,036
6,311,663
6,284,123
6,263,852
6,260,529
6,242,828
6,239,709
6,237,555
6,230,678
6,213,083
6,202,616
6,145,487
6,142,257
6,135,426
6,116,212
6,105,548
6,347,614
6,082,323
6,077,063
6,064,027
6,040,767
6,014,808
6,012,420
5,992,367
5,904,124
5,894,715
5,887,678
5,852,951
5,843,345
5,823,153
5,819,513
5,813,384
5,809,958
5,803,035
5,765,713
5,732,555
5,645,025
5,642,701
5,628352
5,619,845
5,606,948
5,606,851
5,605,130
5,497,679
5,548,955
5,546,901
5,445,014
5,503,125
5,501,203
5,497,679
5,320,795
5,301,643
5,271,363
5,269,713
5,265,700
5,243,878
5,235,943
5,234,038
5,228,487
5,197,426
5,197,425
5,197,422
5,191,864
5,188,069
5,186,142
5,150,674
5,138,996
5,086,890
5,070,829
5,058,544
5,040,644
5,009,208
4,996,956
4,977,879
4,977,877
4,971,219
4,895,119
4,875,448
4,819,593
4,720,638
4,719,682
4,633,556
4,630,498
4,522,080
4,520,288
4,512,499
4,453,507
4,430,984
D 476,629
D 457,891
D 368,187
D 375,963
D 309,457
D 372,871
D 361,771
D 356,951
D 309,457
D 308,872
D 308,871
19
ABOUT YOUR ENGINE WARRANTY
Briggs & Stratton welcomes warranty repair and
apologizes to you for being inconvenienced. Any
Authorized Service Dealer may perform warranty
repairs. Most warranty repairs are handled routinely,
but sometimes requests for warranty service may not
be appropriate. For example, warranty would not apply
if engine damage occurred because of misuse, lack of
routine maintenance, shipping, handling, warehousing
or improper installation. Similarly, warranty is void if
the serial number of the engine has been removed or
the engine has been altered or modified.
4. Parts which are scored or broken because an
engine was operated with insufficient or
contaminated lubricating oil, or an incorrect grade
of lubricating oil (check oil level daily or after every
8 hours of operation. Refill when necessary and
change at recommended intervals.) OIL GARD®
may not shut down running engine. Engine
damage may occur if oil level is not properly
maintained. Read Operating & Maintenance
Instructions.
5. Repair or adjustment of associated parts or
assemblies such as clutches, transmissions,
remote controls, etc., which are not manufactured
by Briggs & Stratton.
If a customer differs with the decision of the Service
Dealer, an investigation will be made to determine
whether the warranty applies. Ask the Service Dealer
to submit all supporting facts to his Distributor or the
Factory for review. If the Distributor or the Factory
decides that the claim is justified, the customer will be
fully reimbursed for those items that are defective. To
avoid misunderstanding which might occur between
the customer and the Dealer, listed below are some of
the causes of engine failure that the warranty does not
cover.
6. Damage or wear to parts caused by dirt, which
entered the engine because of improper air
cleaner maintenance, re-assembly, or use of a
non-original air cleaner element or cartridge. (At
recommended intervals, clean and re-oil the
Oil-Foam element or the foam pre-cleaner, and
replace the cartridge.) Read Operating &
Maintenance Instructions.
Normal wear:
7. Parts damaged by over-speeding, or overheating
caused by grass, debris, or dirt, which plugs or
clogs the cooling fins, or flywheel area, or damage
caused by operating the engine in a confined area
without sufficient ventilation. (Clean fins on the
cylinder, cylinder head and flywheel at
Engines, like all mechanical devices, need periodic
parts service and replacement to perform well.
Warranty will not cover repair when normal use has
exhausted the life of a part or an engine.
Improper maintenance:
recommended intervals.) Read Operating &
Maintenance Instructions.
The life of an engine depends upon the conditions
under which it operates, and the care it receives.
Some applications, such as tillers, pumps and rotary
mowers, are very often used in dusty or dirty
conditions, which can cause what appears to be
premature wear. Such wear, when caused by dirt,
dust, spark plug cleaning grit, or other abrasive
material that has entered the engine because of
improper maintenance, is not covered by warranty.
8. Engine or equipment parts broken by excessive
vibration caused by a loose engine mounting,
loose cutter blades, unbalanced blades or loose or
unbalanced impellers, improper attachment of
equipment to engine crankshaft, over-speeding or
other abuse in operation.
9. A bent or broken crankshaft, caused by striking a
solid object with the cutter blade of a rotary lawn
mower, or excessive v-belt tightness.
This warranty covers engine related defective
material and/or workmanship only, and not
replacement or refund of the equipment to which
the engine may be mounted. Nor does the
warranty extend to repairs required because of:
10. Routine tune-up or adjustment of the engine.
11. Engine or engine component failure, i.e.,
combustion chamber, valves, valve seats, valve
guides, or burned starter motor windings, caused
by the use of alternate fuels such as, liquified
petroleum, natural gas, altered gasolines, etc.
1. PROBLEMS CAUSED BY PARTS THAT ARE
NOT ORIGINAL BRIGGS & STRATTON PARTS.
2. Equipment controls or installations that prevent
starting, cause unsatisfactory engine performance,
or shorten engine life. (Contact equipment
manufacturer.)
Warranty is available only through service dealers
which have been authorized by Briggs & Stratton
Corporation. your nearest Authorized Service
Dealer is listed in the “Yellow Pages™” of your
telephone directory under “Engines, Gasoline” or
“Gasoline Engines,” “Lawn Mowers,” or similar
category.
3. Leaking carburetors, clogged fuel pipes, sticking
valves, or other damage, caused by using
contaminated or stale fuel. (Use clean, fresh,
lead-free gasoline and Briggs & Stratton Fuel
Stabilizer, Part No. 5041.)
20
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