O P E R A T O R ’S M A N U A L
E C H O
T R IM M E R /
B R U S H C U T T E R
S R M -4 0 0
WARNING
DANGER
READ INSTRUCTIONS CAREFULLY AND FOLLOW RULES FOR
SAFE OPERATION.
FAILURE TO DO SO COULD RESULT IN SERIOUS INJURY.
E C H O , IN C O R P O R A T E D
400 Oakwood Road, Lake Zurich, Illinois 60047-1564
Phone : 847-540-8400
X750-002 74 0
X750216-0500
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RULES FOR SAFE OPERATION
SAFETY INSTRUCTIONS
1. Do Not operate the unit when you are
fatigued.
WARNING
DANGER
1. Do Not smoke while handling gasoline.
2. Do Not operate if other people or animals
are in the work area.
3. Do Not operate the unit without the shield
correctly in position.
2. Do Not refuel a hot engine. Wait unit it cools.
3. Do Not overfill the tank. Spiled fuel must be
wiped up.
4. Always stop the engine when refueling.
4. Do Not operate in a confined area. Carbon
monoxide exhaust gas is highly poisonous.
5. Do Not operate the unit while you are
smoking.
6. Always wear eye protection goggles when
operating the unit.
5. Always remove the fuel cap slowly in order to
relieve any pressure build up in the tank.
6. Always restart the engine at least 3 m
(10 feet) away from the refueling posint.
7. Always hold the unit firmly with both hands
and with fingers and thumbs encircling the
handles.
7. Always store gasoline in an approved
container.
8. Always obey local ordinances regulating the
use of internal combustion engines in your
area.
9. Always use the cutting attachments as
approved and supplied by ECHO Inc. for
your unit.
10. Always remain alert when operating the unit
to avoid possible injury to yourself and other
people.
11. Always wear the shoulder harness when
operating the unit.
12. Do not operate the unit while under the
influences of drugs or alcohol.
WARNING
DANGER
SERIOUS INJURY MAY RESULT FROM THE
IMPROPER USE OF STEEL BLADES.
COMPLY WITH ALL SAFETY INSTRUCTIONS
LISTED IN THE OPERATOR’S MANUAL AND
SUPPLIED WITH THE BLADES.
ATTENTION
For your protection when operating this unit,
comly with all Safety Rules as listed in the
Operator’s Manual. (Replacement manuals are
available from your ECHO dealer.)
1. THE ECHO SAW TOOTH BLADE IS
DESIGNED TO CUT BRUSH AND SMALL
TREES.
1. Do not operate unless the debris shield and
safety harness are in good condition and
properly installed.
2. THE ECHO 8 TOOTH ROTARY KNIFE
BLADE IS DESIGNED TO CUT HEAVY
WEEDS AND GRASS. TO AVOID INJURY
DUE TO KICK BACK OR BLADE
2. Do not operate if other persons or animals
are in the work area.
3. Do not operate without eye protection
goggles available from your ECHO dealer.
FRACTURE, DO NOT USE THIS BLADE TO
CUT BRUSH OR TREES.
3. ECHO INC. WILL NOT BE RESPONSIBLE
FOR THE FAILURE OF CUTTING DEVICES
WHICH HAVE NOT BEEN TESTED AND
APPROVED BY ECHO FOR USE WITH
THIS UNIT.
3
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NOMENCLATURE HAVE PARTS
Gear housing
Decompression device
Drive shaft assembly
Ignition switch
Shield
Muffler
Spark plug
Throttle trigger
Grip
Choke lever
Air cleaner cover
Shoulder harness
Starter handle
Fuel tank
TECHNICAL DATA
SRM-400
186 × 70 × 43 (73.2 in × 27.6 in × 16.9 in)
Dimension
Masses
Engine
L × W × H
cm
kg
9.9 (21.8 lb): without shoulder harness and cutter head
Type
Air cooled two stroke single cylinder
Displacement
Max revolution
Carburetor
Ignition
mL (cm³) 42.7 (2.6 cu in)
r/min
10,000
Walbro diaphragm type WYK
Flywheel magneto : CDI (Capacitor Discharge Ignition)
system
Spark plug
Starter
CHAMPION CJ-6Y
Recoil starter
Clutch
Automatic centrifugal clutch
Fuel
Mixing ratio
Mixture of gasoline (Unleaded, 89 octane minimum) and
specially blended 50 : 1 ECHO two cycle engine oil.
1.0 (33.8 US fl oz)
Tank capacity
L
Drive shaft
assembly
Cutter (Option)
Cutter
Nylon line cutter head
Circular saw, 25 cm (10 in)
Cutter (Option)
Gear housing
Lubrication
Drive shaft
Shield
8 cutter blade, 20 cm (8 in)
60 degree bevel gears, ratio 1 : 1.33 (Counter-clockwise)
Shell Delpena or good quality lithium grease
High tensile solid steel, 5 bearings
Metal shield mounted on the gear housing for nylon line
and metal blade applications.
Technical data subject to change without notice.
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ASSEMBLING
DRIVE SHAFT
•
•
•
Stand engine uprignt on a level floor.
Loosen bolts at drive shaft end of the engine.
Fit drive shaft assembly ensuring that the drive
shaft is correctly engaged.
•
Tignten bolts to fasten drive shaft assembly.
Bolts
WARNING
DANGER
NEVER START ENGINE WITHOUT
DRIVESHAFT ASSEMBLY INSTALLED.
THIS COULD RESULT IN SERIOUS INJURY.
Right hand grip assembly
HANDLE
Insert right hand grip assembly into right hand U-
handle and fit it to the slot for rotation prevention of
right hand U-handle.
Slot
Right hand U-handle
Grip assembling bolt
Fit grip assembling bolt and secure the grip firmly.
Remove bolt retainer tube from end of handle
assembling bolt (8 mm).
Handle assembling bolt (8 mm)
Bolt retainer tube
Install handle assembling bracket (upper) in handle
assemblingbracket(lower)andfixhandlebytightening
handle assembling bolt (8 mm) lightly.
Handle assembling bracket (upper)
Handle assembling bolt (8 mm)
Left handle
Handle assembling bracket (lower)
To engine
5
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Loosen 4 right handle assembling bolts and insert
right hand U-handle into right handle assembling
Right handle assembling bolt
Right handle assembling bracket
bracket. (toward direction of arrow
)
Fix the right hand U-handle by tightening 4 right
handle assembling bolts lightly.
Right hand U-handle
To engine
Adjust each inclination of right and left handles to
adequateposition(easytooperate)andtightenfirmly
handle assembling bolt (8 mm) and 4 right handle
assembling bolts.
Adjustment of right handle inclination (left/right)
Adjustment of right handle inclination
(forward/ backward)
Adjustment of left handle inclination
(forward/ backward)
To engine
Determine “Easy to operate” position.
SHIELD
1
4
2
7
6
Fit the shield on the gear housing and tighten
screws with washers (Seven points) as shown.
3
5
SHOULDER HARNESS
Shoulder strap assembly
•
Fit the shoulder starp to the swivel hook, and
adjust the length of starp and or the locaion
clamps to maintain the cutter head parallel to
the ground.
Quick release latch
Waist pad
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OPERATION
GENERAL CHECK
•
Eneure that all nuts, screws and bolts installed
are properly tightened.
Oil
1
FUEL STATEMENT
Gasoline
50
R+M
2
GASOLINE : Use 89 octane (
) gasoline or
gasohol known to be good quality. Gasohol may
contain maximum 10% ethyl (grain) alcohol or 15%
MTBE (methyl tertiary-butyl ether). Gasohol
containing methyl (wood) alcohol is not approved.
Fuel mix chart
(50 : 1)
OIL : ECHO brand premium two-stroke 50:1 oil is
reguirred.
Mix oil and gasoline /gasohol according to
insturctions on the oil container label.
MIXING : Follow directions on the oil container.
US
METRIC
GAS
GAS
OIL
FL OZ
2.6
OIL
mL
GAL
L
4
1
2
5
80
5.1
8
160
400
IMPORTANT
12.8
20
Stored fuel ages. Do not mix more fuel than
you expect to use in thirty (30) days, ninety
(90) days when a fuel stabilizer is added.
Stored two-stroke fuel may separata.
ALWAYS shake fuel container thoroughly
before each use.
STARTING COLD ENGINE
Throttle trigger
Ignition switch
•
•
Slide switch to START/RUN position as shown.
Push purge bulb 3 or 4 times (or until constant
flow of fuel is visible in fuel return line.)
•
Move choke lever to COLD START (Close)
position.
Throttle control lockout
•
•
Press the decompression device.
Pull recoil starter until the engine fires. Now,
move choke lever to RUN (open) position, and
if necessary, restart the engine again and allow
to warm up for a few minutes before using.
•
After idling, gradually open throttle and cutter
blade will start to operate as the engine attains
clutch engagement speed of 3,500 r/min
approximately.
COLD START (Close)
NOTE
Recoil starter : Use short pulls - only 1/2 - 2/3 of
starter rope for starting. Do not let starter rope
snap back in .
RUN (Open)
Always hold the unit firmly.
Purge bulb
Fuel return line
Choke lever
7
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STARTING WARM ENGINE
Decompression device
•
When engine is warm, start it by pulling recoil
starter rope with switch positioned at START/
RUN.
(Keep choke lever in RUN (open) position)
•
•
Press the decompression device.
If engine does not start in a few tries, follow
same procedures as starting a cold.
HOLD THE UNIT FIRMLY.
STOPPING ENGINE
•
Release throttle trigger and allow to run at an
idle speed.
•
Side ignition switch to “STOP” position.
OPERATING THE TRIMMER
•
Adjust handle to a convenient position for
cutting as instructed on page 6.
•
Allow the engine to warm up at a fast idle for a
few minutes.
•
•
Increase engine speed as necessary.
When mowing shrubs, weeds, or grass, swing
the cutter head from right to left as you move
forward.
- Avoid striking any obstruction such as rocks,
stones or tree stumps which can damage the
cutter head.
Do not cut into the ground.
- To avoid damage to the engine, do not run the
engine unloaded at full throttle.
•
In the event that the cutter strikes an
obstruction or is otherwise prevented from
rotating in normal operation, the clutch will slip
to prevent possible engine damage. In this
case, stop the engine, free the cutter and then
start the operation again.
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WARNING
DANGER
WARNING
DANGER
DO NOT ALLOW EITHER PEOPLE OR
ANIMALS INTO THE WORK AREA.
ALWAYS WEAR SAFETY GOGGLES WHEN
CUTTING.
• BEFORE STARTING UP THE ENGINE,
MAKE SURE THAT THE CUTTER BLADE IS
NOT CONTACTING ANYTHING.
• WHEN TWO OR MORE OPERATORS ARE
WORKING TOGETHER, ENSURE THAT A
SAFE DISTANCE IS KEPT BETWEEN
THEM.
DRESS PROPERLY - AVOID LOOSE
CLOTHING.
WHEN GRASS OR WEEDS HAVE CLOGGED
THE CUTTER HEAD AFFECTING NORMAL
OPERATION, FIRST, STOP THE ENGINE AND
THEN REMOVE THE DEBRIS.
OPERATING INSTRUCTIONS (METAL
BLADES and OPTIONAL NYLON LINE)
Your brushcutter/trimmer, has been designed and
constructed to give you years of trouble-free
service and relieve you of the many back-aching
tasks normally associated with grass trimming,
weed control and brushcutting. Nevertheless, in
common with all other power operated tools, the
Owner and/or Operator has a definite responsibility
to maintain the safe working condition of the unit as
provided by the manufacturer , and to ensure also
the safe operating procedures as prescribed by
common sense and this manual. Please, therefore,
read and understand the instructions as listed
hereunder, and on Page 3, in order to prevent
accidents and possible injury.
ECHO 2-LINE MANUAL TRIMMER
HEAD (OPTION)
WARNING
DANGER
1. Read the Operator’s Manual carefully.
Be throughly familiar with the controls and
proper use of the trimmer.
GRASS/WEED TRIMMERS CAN THROW
GRAVEL, STONE, WOOD CHIPS, GLASS,
AND PLASTIC OR METAL OBJECTS. THE
DEBRIS SHIELD BEHIND THE TRIMMER
HEAD STOPS MUCH OF THE DEBRIS, BUT
CANNOT PREVENT THE OPERATOR FROM
BEING STRUCK BY SOME DEBRIS. READ
THE RULES FOR SAFE OPERATION IN THE
OPERATOR’S MANUAL THAT YOU
Know how to stop the unit and disengage the
controls.
2. Never allow children to operate the trimmer.
3. Never allow adults to use the trimmer unless
they have received prpper instructions. Be sure
the operator is properly attired and wears the
type of foot, leg, head, eye and ear protection
recommended both in your ECHO Operator’s
Manual and by your ECHO Servicing Dealer.
RECEIVED WITH YOUR ECHO TRIMMER.
AISO, FOLLOW AII INSTRUCTIONS IN THIS
INSTRUCTION SHEET.
4. Always wear eye protection that conforms to
ANSI Z 87. 1-2000.
9
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1. REPLACING LINE
15 cm (6 in)
1C
1D
1B
A. Remove spool by turning knob clockwise,
“right”, and separating parts.
B. Thread a 6 m (20 feet) length of 2.4 mm (0.095
in) or 2.7 mm (0.105 in) ECHO line through
hole in spool so that ends are the same length.
C. Wind both ends of line tightly and evenly
clockwise (see arrows on spool), and wind from
side to side without twisting the lines.
SPOOL
D. Secure ends of line temporarily with about 15
cm (6 in) extending out.
2.REPLACING SPOOL
HOUSING
2B
2A
NOTE
Keep line tight on spool.
BOLT
A. Snap spool into housing while pulling line
through eyelets with about 15 cm (6 in)
extending out.
CAUTION
SPRING
KNOB
Knob tightens counterclockwise, “left”.
B. Fasten spool to housing with shaft bolt, spring,
and knob.
INSTALLATION OF NYLON LINE
HEAD(OPTION)
Upper fixing plate
Cutting head
Locking tool
Set the nylon line head to the drive shaft and
tighten by turning as shown.
TIGHTEN
OPERATING INSTRUCTIONS NYLON
LINE
1. Always use the end of the line for cutting.
Forcing the cutter head too close to the work
will result in reduced efficiency and broken line.
2. Maintain the line at the recommended length of
12.5 to 15 cm ( 5 to 6 in).
A longer line will reduce engine speed, a
shorter line may result in engine damage.
3. The trimmer head rotates counterclockwise.
Always cut with the head tilted to the right to
deflect debris away from the operator.
CUTTING PROCEDURES
4. Always observe the SAFETY RULES on Page
3 when using the unit.
10
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SHOULDER HARNESS
•
Install the harness over the both shoulders and
adjust shoulder straps so that the quick release
latch rests low on the right hand side.
PULL
•
•
Attach the trimmer/brushcutter to the harness
by means of the quick release latch.
Make some practice sweeps as with a trimmer
and readjust the harness as necessary for
comfort and to maintain the cutter parallel to the
ground.
Quick
release
latch
WARNING
DANGER
IN CASE OF EMERGENCY, PULL THE QUICK
RELEASE LATCH TO DISCONNECT THE
TRIMMER FROM THE HARNESS.
TRIMMING
The nylon line will allow you to trim along walls and
fence lines. Always try to trim from right to left,
walking behind the unit and parallel to the wall or
fence, thus deflecting debris away from the
operator.
EDGING
1. The nylon line is intended only to cut grass and
should not be used to cut a normal edging
trench along stone or concrete driveway etc.
2. Tilt the unit vertically as illsutrated and use only
the line tip to remove unwanted growth.
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MOWING
•
The nylon line will effectively mow large areas
of heavy grass and/or weeds. Use the standard
12.5 to 15 cm ( 5 to 6 in) of line and operate at
full throttle.
•
When mowing cultivated areas such as lawns
hold the cutter head pararell to the gound to
avoid scalping.
SCALPING
1. The cleaning of weeds and grass right down to
the earth can be accomplished very easily with
the nylon line.
2. Scalping around trees and brushes is
particularly effective, but care should be
exercised not to bruise the bark of young and
sensitive growth.
TREE
3. In flower beds, always remenber that the nylon
line will cut in a complete circle to avoid cutting
flowers instead of weeds.
SWEEPING
1. Sweeping grass and other debris from a hard
surface can be done very quickly.
STEEL BLADE OPERATIONS
Your ECHO Trimmer/Brushcutter is designed for
fast, efficient weed and brush control in areas
which are otherwise inaccessable to power
equipment. Standard configuration includes a
handle bar and nylon line head for light trimming
and weed clearing. Two special steel blades are
available as options and recommended for use in
extended heavy weed and brush clearing
operations : -
1.Blade:weed and grass 8 tooth 20 cm (8 in)
diameter
2.Blade:brush 80 tooth 25 cm (10 in) diameter
WARNING
DANGER
1. SERIOUS INJURY MAY RESULT FROM
THE IMPROPER USE OF STEEL BLADES.
READ AND COMPLY WITH SAFETY
INSTRUCTIONS LISTED IN THIS MANUAL.
2. THE EIGHT TOOTH BLADE IS DESIGNED
SPECIALLY TO CUT WEED AND GRASS.
TO AVOID INJURY DUE TO KICKBACK OR
BLADE FRACTURE, DO NOT USE THIS
BLADE TO CUT BRUSH OR TREES.
3. ECHO INC. WILL NOT BE RESPONSIBLE
FOR THE FAILURE OF CUTTING DEVICES
WHICH HAVE NOT BEEN TESTED AND
APPROVED BY ECHO FOR USE WITH
THIS UNIT.
12
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WARNING
DANGER
6. SHOULD THE BRUSHCUTTER BE
OPERATED FOR AN EXTENDED PERIOD
OF HIGH TEMPERATURES, THE GEAR
BOX MAY BECOME VERY HOT.
IF TOO HOT TO TOUCH, ALLOW THE UNIT
TO COOL DOWN, CHECK THE
LUBRICATION AS PER ‘MAINTENANCE’
AND CONTINUE TO OPERATE IF IN
ORDER.
SAFETY PRECAUTIONS
1. ALWAYS USE THE CORRECT BLADE FOR
THE JOB AS RECOMMENDED.
2. BE CAREFUL NOT TO HIT ROCKS,
STONES, TREE STUMPS OR ANY
FOREIGN OBJECT WHICH MAY DAMAGE
THE BLADE.
3. DO NOT CUT INTO THE GROUND TO
AVOID DULLING THE BLADE.
7. TO AVOID ENGINE DAMAGE, DO NOT
RUN ON FULL THROTTLE WITHOUT
LOAD.
4. ALWAYS STOP THE ENGINE AND
EXAMINE THE BLADE AFTER STRIKING
AN OBSTRUCTION.
8. DO NOT OPERATE THE BRUSHCUTTER
WITHOUT THE HARNESS AND DEBRIS
SHIELD CORRECTLY FITTED.
DO NOT OPERATE WITH A BLADE WHICH
IS BLUNT, BENT, FRACTURED, OR
DISCOLORED DUE TO OVERHEAT.
9. ALWAYS INSPECT THE WORK AREA AND
REMOVE ANY FOREIGN OBJECTS.
5. IN THE EVENT, THAT THE BLADE
STRIKES AN OBSTRUCTION, OR IS
OTHERWISE PREVENTED FROM
ROTATING IN NORMAL OPERATION, THE
CENTRIFUGAL CLUTCH WILL SLIP TO
PREVENT ENGINE DAMAGE.
IN THIS CASE, STOP THE ENGINE, FREE
AND EXAMINE THE BLADE AND IF IN
GOOD ORDER, RESUME OPERATION.
SHOULDER HARNESS
•
Install the harness over the both shoulders and
adjust shoulder straps so that the quick release
latch rests low on the right hand side.
PULL
•
•
Attach the trimmer/brushcutter to the harness
by means of the quick release latch.
Make some practice sweeps as with a scythe
and readjust the harness as necessary for
comfort and to maintain the cutter parallel to the
ground.
Quick
release
latch
WARNING
DANGER
IN CASE OF EMERGENCY, PULL THE QUICK
RELEASE LATCH TO DISCONNECT THE
TRIMMER FROM THE HARNESS.
SHIELD
When using a metal blade. Use same as Nylon
line.
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INSTALLING THE BLADE
1. The installation of the 8 tooth weed/grass blade
(option) and the 80 tooth brush is exactly the
same.
Brush Blade
(80 tooth)
Weed/Grass Blade
(8 tooth)
2. Rotate the drive shaft until the holes in the
upper fixing plate and the gear box are aligned.
Insert the locking tool.
Upper fixing plate
Locking tool
3. Remove the nylon line line head, if fitted, by
turning in a clockwise direction.
Box wrench
4. Install the blade ensuring that it is centered
correctly on the fixing plate.
5. Fit the lower fixing plate and tighten the locking
nut using the box wrench supplied in the tool
kit.
TIGHTEN
Locking tool
6. Fit a new split pin as supplied in the tool kit to
secure the locking nut.
Lower fixing plate
Split pin
Assemble cutter blade properly
NOTE
• The drive shaft is fitted with left hand threads,
therefore turn counterclockwise to tighten as
illustrated.
Gear housing
Locking
tool
Adapter plate
(Upeer)
• Always use a new split pin to secure the
locking nut.
Split pin 2 × 22 mm
Part No. 898502-01130.
Nut
Adapter plate (Lower)
Split pin
14
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HEAVY WEED CUTTING
•
•
Install the 8 tooth 20 cm (8 in) blade. (option)
Observing all precautions as listed in this
manual, start the engine and using full throttle,
swing the blade in an arc as you move forward
slowly. The cutter rotates counter-clockwise
and the debris will be pushed backwards so the
work area will always be visible.
BRUSHCUTTING
•
•
Install the 80 tooth blade.
Proceed exactly as for weed and grass cutting.
SMALL TREES
•
•
The unit will effectively cut small trees up to 7.5
cm (3 in) diameter using the 80 tooth 25 cm
(10 in) diameter new blade.
Before attempting to cut, ensure that the falling
tree will fall away from you, and if necessary,
tie a rope to the tree and have an assistant pull
it in a safe direction.
•
•
Do not attempt to “plunge cut”, i.e. using the
brushcutter like an axe. It is not necessary and
may cause serious damage to the brushcutter.
Brace your feet firmly on the ground and cut
with the left hand side of the blade.
CAUTION
1. Always cut on full throttle.
2. Never try cutting with a blunt blade.
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MAINTENANCE AND CARE
- ALWAYS KEEP THE UNIT CLEAN -
AIR FILTER
Latch
•
Clean before using the unit.
- Close choke. Disengage latch and remove air
cleaner cover.
Air filter
- Remove air filter.
Air cleaner cover
- Brush off dust lightly or clean with
compressed air.
- Reinstall cover and engage latch.
FUEL STRAINER
•
Check periodically.
- Do not allow dust to enter into fuel tank.
- Clogged strainer will cause difficulty in starting
engine or abnormalities in engine
performances.
- Pick up fuel strainer through fuel inlet port with
a piece of steel wire or the like.
- When strainer is dirty, wash it in suitable
cleaning fluid or replace it.
Fuel strainer
MUFFLER AND EXHAUST PORT (SAM)
•
•
Clean as necessary.
Muffler cover
Carbon deposits in cylinder exhaust port and
muffler will reduce engine output.
- Muffler can be removed by taking off muffler
cover.
- Be careful not to scratch cylinder or piston
when cleaning cylinder exhaust port.
Use non-ferrous plastic or wood.
Screen
Lid
•
Check loose nuts and screws on the muffler
part before every use.
Retighten them firmly if necessary.
CYLINDER FINS
Cylinder fins
•
•
•
Check periodically.
Clogged fins will result in poor engine cooling.
Remove dirt and dust from between fins to let
cooling air pass easily.
Air intake
16
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SPARK PLUG
•
•
Check periodically.
Standard spark plug gap is 0.6 to 0.7 mm
(0.024 to 0.028 in).
•
•
Replace if either electrode is worn or if the
insulator is fouled by oil or other deposits.
0.6 - 0.7 mm (.024 - .028 in)
TORQUE = 14.2 to 15.2 N•m (125 to 135 in lb)
CAUTION
Do not over torque.
GEAR HOUSING
Gear housing
Bolt
•
•
Remove the bolt every 50 hours and check.
Replenish as necessary, but do not overfill.
- Shell delpena or good quality lithium multi
grease is recommendable.
CARBURETOR ADJUSTMENT
Every unit is run at the factory and the carburetor is
set in compliance with California Emission Regula-
tions, in addition.
Idle speed adjustment screw (T)
1. Before adjusting carburetor clean or replace air
filter and muffler, “Spark Arrestor Screen”.
2. Make sure the cutting attachment such as
hedge clipper blades or circular saw are
properly adjusted. Trimmer line should be
extended to cut-off knife.
3. Start engine and run several minutes to bring to
operating temperature. Flash choke twice
during warm-up to clear any air from the fuel
system.
4. Idle Speed Adjustment
• Start engine, turn “idle” speed adjustment
screw CW until the cutting attachment begins
to turn, then turn screw out CCW until
attachment stops turning. Turn screw out,
CCW, an addtional 1/4 turn.
WARNING
DANGER
CUTTING ATTACHMENT MUST NOT TURN
OR MOVE WHEN UNIT IS IDLING.
CAUTION
When strarting, idling adjustment speed
should be adjusted not to rotate the cutting
attachment. Correct idle speed is adjusted
2,900 to 3,100 r/min. Or 1/4 turn counter
clockwise from the point the cutting
attachment stops moving. When there is
some trouble with the carburetor, refer to
your distributor or dealer.
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EIGHT CUTTER BLADE
•
•
•
Use only the blade designated by the
manufacturer for this model.
30°
Cutter edge
2R
When crack is noticed on the blade, never use
it, but replace with a new one.
Round the teeth bottom for 1- 2 mm radius in
order to avoid the crack using a round file.
Not sharpened
2mm
- Rounded part is not to be sharpened.
Tooth bottom
- Sharpen each cutter equally so as to retain
the balance of the blade.
- In sharpening the edge by use of a grinder, do
not cool the cutter abruptly by immersing it in
water.
MAGNETO
The unit is incorporated with a CDI (Capactior
Discharge Ignition) system, which does not require
adjustment of ignition timing and the contact
breaker point gap. Ensure wire connections and
couplers assembling.
TROUBLE SHOOTING
Poor performance of the engine and/or trimming mechanism can normally be prevented by carefully
following instructions.
Poor performances can easily be corrected even by a beginner.
When the engine does not function properly check the following three (3) points first.
•
•
•
Is engine compression adequate?
Is fuel system in good condition and is enough fuel being supplied?
Is electrical system in good condition and is spark plug operating normally?
When there is serious trouble with the unit, do not try to repair it yourself but have your distributor or dealer
do it for you. For detailed TROUBLE SHOOTING refer to tables 1 and 2. Locate the problem on the
following charts and repair as necessary.
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Fuel strainer clogged
Fuel pipe clogged
Clean.
Fuel is not
reaching
carburetor
Table 1
Clean.
Suction insufficient
Make sufficient.
Clean.
Fuel is not
reaching
cylinder
Strainer clogged
Carburetor out of order
C.D.I. module defective
Ignition coil defective
Wire connection defective
Disassemble and check.
Remove and replace.
Remove and replace.
Reconnect.
No spark at high
tension cord end
High-tension cord connection
defective
Repair as necessary.
Switch is grounded
Insulator cracked
Switch on.
Replace plug.
Adjust.
Spark gap incorrect
Covered with carbon
Fouled with fuel
No spark at plug
Clean or replace.
Clean or replace.
Start correctly.
Readjust.
Starting procedures incorrect
Low and high speed needle
setting too lean
Fuel does
not keep
running
Metering lever spring too strong
Fuel pump diaphram defective
Fuel passage clogged with dust
Readjust
Replace.
Disassemble and clean.
Retighten all screws.
Fuel leaking from fixing
surfaces of carburetor
Accelera-
tion and
low speed
function
defective
Air valve, fuel tank cap
does not work normally
Replace or clean.
Fuel pump does not operate
Check impulse drilling.
Clean.
Fuel inlet needle valve
clogged with dust
Carburetor
overflow
Metering lever spring not placed
in dent of lever
Correct.
This is because fuel
mixture is too rich.
Start the engine several
times with choke shutter
fully open and run at fast
idle until engine does not
smoke.
Muffler sticky
with fuel
Bearing damaged
Disassemble and replace.
Disassemble and replace.
Disassemble and replace.
Disassemble and replace.
Engine does
not crank
Piston and/or cylinder seized
Crankshaft worn
Crankshaft contacting
crankcase
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Table 2
Improper fuel used
Use fuel with correct mixing ratio.
Never use gasoline of poor quality.
Spark plug defective (burnt)
Replace.
As cooling fins clogged, air
does not pass well
Clean fins.
Engine overheated
Excessive deposits in
combustion chamber
Disassemble and remove carbon.
Plug damaged or fouled
Replace or clean.
Check wiring.
Firing function defective
Carburetor defective
Combustion poor due to
defective wiring
High-speed needle
setting incorrect
Readjust.
Carburetor overflow
Air cleaner clogged
Refer to Table 1.
Clean as necessary.
Compression insufficient
(piston ring stuck or worn
out)
Disassemble, check and replace
if necessary.
Other troubles
Cylinder chromium plating
peeled or worn out
Replace cylinder.
Clean as necessary.
Readjust.
Exhaust port clogged with
carbon
Throttle is not fully open
Improper setting
Set properly.
Correct properly.
Adjust load.
Replace.
Blade does not cut well
Blade does not rotate
Height of cutter uneven
Overloaded
Clutch shoe worn out
LONGTERM STORAGE
•
Inspect and adjust every part of the unit.
•
Drain fuel tank, pull starter handle slowly a few
times to drain fuel from carburetor.
- Completely clean every part, and repair, if
necessary.
•
Pour a small amount of clean motor oil into
spark plug hole, pull starter handle and then
crank the engine until TOP DEAD CENTER.
- Apply thin coating of oil on metal parts to
prevent rust.
•
Store in a dry area, free from dust.
- Remove the cutter head, apply sufficient oil
coating and wrap up in plastic.
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