Racing RAC52PB-C User manual

ORIGINAL INSTRUCTIONS
GASOLINE BRUSH CUTTER & GRASS TRIMMER
RAC52PB-C
INSTRUCTION MANUAL
Read carefully this manual before any use.
BUILDER
32, rue Aristide Bergès - ZI 31270 Cugnaux - France

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1. SAFETY WARNINGS
Proper safety precautions must be observed. Like all power equipment this unit must be handled
carefully. DO NOT EXPOSE YOURSELF OR OTHERS TO DANGER.
Follow these general rules. Do not permit others to use this machine unless they are thoroughly
responsible and have read, and understand the machine manual and are trained in its operation.
Always wear safety goggles for eye protection. Dress properly; do not wear loose clothing or
jewelry that could become caught in moving parts of the unit. Safe, sturdy, nonskid footwear
should always be worn. Long hair should be tied back. It is recommended that legs and feet be
covered to protect from flying debris during operation.
Inspect the entire machine for loose parts (nuts, bolts, screws, etc.)and any damage. Repair or
replace as necessary before using the machine. DO NOT USE any attachment with this power
head other than the ones recommended by our company. Serious injury to the operator or
bystanders could result as well as damage to the machine.
Keep the handles free from oil and fuel.
Always use proper handles and shoulder strap when cutting.
Do not smoke while mixing fuel or filling tank.
Do not mix fuel in an enclosed room or near open flames. Assure adequate ventilation.
Always mix and store the fuel in a properly marked container that is approved by local codes and
ordinances for such usage.
Never remove the fuel tank cap while the engine is running.
Never start or run the engage inside a closed room or building. Fumes from the exhaust contain
dangerous carbon monoxide.
Never attempt to make engine adjustments while the unit is running and strapped to the operator.
Always make engine adjustments with the unit resting on a flat, clear surface.
Do not use the unit if it is damaged or poorly adjusted. Never remove the machine’s guard.
Serious injury to the operator or bystanders could result as well as damage to the machine.
Inspect the area to be cut and remove all debris that could become entangled in the nylon
cutting head. Also remove any objects that the unit may throw during cutting.
Keep children away. Onlookers should be kept at a safe distance from the work area, at least 15
meters (50 FEET).
Never leave the machine unattended.
Do not use this unit for any job other than those for which it is intended as described in this
manual.
Do not overreach. Keep proper footing and balance at all times. Do not run the unit while
standing on a ladder or on any other unstable footing location.
Keep hands and feet clear of the nylon cutting head or blade while unit is in use.
Do not use this type of machine for sweeping away debris.
Do not use the unit when you are tired, ill or under the influence of medication ,drugs or alcohol.
Use nylon cutting head which is free of damage. If a stone or any other obstacle is hit, stop the
engine and check the nylon cutting head. A broken or unbalanced nylon cutting head must never
be used.
Do not store in a closed area where fuel vapors can reach an open flame from hot water heaters,
furnaces, etc. Store in a locked, well-ventilated area only.
Ensure safe and proper performance of your product. These part are available from your dealer.
The use of any other accessories or attachments may cause a potential hazard or injury to the
user, damage to the machine and void this warranty.
Clean the machine completely, especially, the fuel tank, its surroundings, and the air cleaner.
When refueling, be sure to stop the engine and confirm that it is cooled down.. Never refuel
when the engine is running or hot. When gasoline spills, be sure to wipe it up completely dispose

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of those materials before starting the engine.
Stay clear of other workers or bystanders by at least 15 meters/50 feet.
Whenever approaching an operator of the machine, carefully call his attention and confirm that
the operator stop the engine. Be careful not to startle or distract the operator which can cause an
unsafe situation.
Never touch the nylon cutting head or blade when ever the engine is running. If it is necessary to
replace the protector or cutting attachment, be sure to stop the engine and confirm that the
cutting device has stopped running.
The engine should be turned off when the machine is moved between work areas
Be careful not to hit the nylon cutting head against stones, or the ground.
Unreasonable rough operation will shorten the life of the machine as well as create an unsafe
environment for yourself and those around you.
Pay attention to loosening and overheating of parts. If there is any abnormality of the machine,
stop operation immediately and check the machine carefully. If necessary, have the machine
serviced by an authorized dealer. Never continue to operate a machine which may be
malfunctioning.
In start-up or during operation of the engine, never touch hot parts such as the muffler, the high
voltage wire or the spark plug.
After the engine has stopped, the muffler is still hot. Never place the machine in any places
where there are flammable materials (dry grass, etc.), combustible gasses or combustible
liquids.
Pay special attention to operation in the rain or just after the rain as the ground may be slippery.
If you slip or fall to the ground or into a hole, release the throttle lever immediately.
Be careful not to drop the machine or hit it against obstacles.
Before proceeding to adjust or repair the machine, be sure to stop the engine and detach the
spark plug.
When the machine is placed in storage for a long time, drain fuel from the fuel tank and
carburetor, clean the parts, move the machine to a safe place and confirm that the engine is
cooled down.
Make periodic inspections to assure safe and efficient operation. For a thorough inspection of
your machine, please contact a dealer.
Keep the machine away from fire or sparks.
It is believed that a condition called Raynaud ’s phenomenon, which affects the fingers of certain
individuals, may be brought about by exposure to vibration and cold. loss of color and numbness
in the fingers. The following precautions are strongly recommended because the minimum
exposure which might trigger the ailment is unknown.
Keep your body warm, especially the head, neck, feet, ankles, hands and wrists.
Maintain good blood circulation by performing vigorous arm exercises during frequent work
breaks and also by not smoking.
Limit the hours of operation. Try to fill each day with jobs where operating the brush cutter or
other hand-held power equipment is not required.
If you experience discomfort, redness and swelling of the fingers followed by whitening and loss
of feeling, consult your physician before further exposing yourself to cold and vibration.
Always wear ear protection, loud noise for long time can make hearing debase even lost
hearing.
Total face and head protection must be wear to prevent damage from plummet or branch.
Wear no-slip heavy duty work gloves to improve your grip on the brush cutter handle. Gloves
also reduce the transmission of machine vibration to your hands.
WARNING: The cutter area is still dangerous while the machine is coasting to a stop.
When transport, this unit must be handled carefully. Do not expose yourself or others to danger.

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Envelop the blade before storage. Keep children away from it.
Never remove the machine’s guard.
Do not store in a closed area where fuel vapors can reach an open flame from hot water heaters,
furnaces, etc. Store in a locked, well-ventilated area only.
Never place the machine in any places where there are flammable materials (dry grass, etc.),
combustible gasses or combustible liquids.
When the machine is placed in storage for a long time, drain fuel from the fuel tank and
carburetor, clean the parts, move the machine to a safe place and confirm that the engine is
cooled down.
emission of exhaust gases
National regulation can restrict the use of the machine.
Never modify a trimmer or cutter in any way.
Improper use of the machine can cause SERIOUS OR FATAL PERSONAL INJURY.
The engine exhaust form this product contains chemicals to cause cancer, birth
defects, of other reproductive harm.
Kickback and Related Warnings
● Kickback is a sudden reaction to a pinched or snagged rotating wheel, backing pad, brush or any other
accessory. Pinching or snagging causes rapid stalling of the rotating accessory which in turn causes the
uncontrolled power tool to be forced in the direction opposite of the accessory’s rotation at the point of the
binding.
● For example, if an abrasive wheel is snagged or pinched by the workpiece, the edge of the wheel that
is entering into the pinch point can dig into the surface of the material causing the wheel to climb out or
kick out. The wheel may either jump toward or away from the operator, depending on direction of the
wheel’s movement at the point of pinching. Abrasive wheels may also break under these conditions.
● Kickback is the result of power tool misuse and/or incorrect operating procedures or conditions and can
be avoided by taking proper precautions as given below.
a) Never place your hand near the rotating accessory. Accessory may kickback over your hand.
b) Do not position your body in the area where power tool will move if kickback occurs. Kickback
will propel the tool in direction opposite to the wheel’s movement at the point of snagging.
c) Use special care when working corners, sharp edges etc. Avoid bouncing and snagging the
accessory. Corners, sharp edges or bouncing have a tendency to snag the rotating accessory and
cause loss of control or kickback.
Explanation of symbols
This graphic accompanied by the words WARNING and
DANGER calls attention to an act of a condition which can lead to
SERIOUS INJURY.
READ & UNDERSTAND Operator’s Manual and Safety Manual
ALWAYS WEAR EYE PROTECTION, EAR PROTECTION AND
HEAD PROTECTION.

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WEAR FOOT PROTECTION
WEAR GLOVES
BEWARE OF FALLING OBJECTS
BEWARE OF FOOT INJURY BY CUTTING ATTACHMENT
PAY ATTENTION THAT BYSTANDERS ARE NOT INJURED
THROUGH FOREIGN OBJECTS THROWN FROM THE
MACHINE.
BEWARE OF THROWN OBJECTS HIT BY CUTTING
ATTACHMENTS. NEVER USE WITHOUT PROPERLY
MOUNTED BLADE GUARD.
BEWARE OF BLADE THRUST.
KEEP BYSTANDERS AT LEAST 15 M AWAY.
DO NOT USE SAW BLADE.
RISK OF HOT SURFACE
GUARANTEE SOUND POWER LEVEL

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2. YOUR PRODUCT
a. Description
1. BLADE 3Z blade for grass, weed or brush cutting applications. Harness and plastic shield are
required for blade operation
2. NYLON CUTTER HEAD Contains replaceable nylon trimming line that advances when the
trimmer head is tapped against the ground while the head is turning at normal operating
speed.
3. CUT-OFF KNIFE Trims nylon filament to the correct length-, head to end of line-when
nylon trimming head is bumped on the ground during operation, line advance. If trimmer is
operated without a cut-off knife the line becomes too long (more than) the engine, this will
overheat or damage the engine.
4. DEBRIS SHIELD Mounted just above the cutting attachment. Helps protest operator by
deflecting debris produced during debris produced during the trimming operation. Do not
operate unit without shield.
5. HANDLE this handle can be adjusted at you convenience for comfort.
6. DRIVE SHAFT ASSEMBLY Contains a specially designed liner hard drive shaft.
. IGNITION SWITCH “slide switch mounted on top of the Throttle Trigger Housing. Move
switch FORWARD to STOP, BACK to Run.
8. SAFETY LEVER Before acceleration, compress it please.
9. THROTTLE TRIGGER Spring loaded to return to idle when released. When accelerating,
press trigger gradually for best operating technique. Do not hold trigger while starting.
10. PURGE BULB Pushing purge bulb ( to 10 times before starting),will remove all air and sale
fuel from fuel system and bring fresh fuel to the carburetor.
11. FUEL TANK LID.
12. FUEL TANK Contains fuel and fuel filter.
13. AIR CLEANER COVER Contains replaceable felt element.
14. CHOKE the choke control is located on the top of the filter cover.
15. STARTER HANDLE pull handle until engine starts, then return handle slowly. DO NOT let
handle snap back or damage to starter will occur.

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b. Technical data
MODEL
RAC52PB-C
Main unit
Remote type
Centrifugal Clutch;
Hard transmission
Maximum speed of cutter head (r/min)
8,000
Idle speed of engine(r/min)
3,000 ±200
Centrifugal speed(r/min)
3,800
Measured vibration emission value
at each manipulation (m/s2)
(According to ISO 2286)
Brush cutter:
- Left handle: 3.926 m/s²,
- Right handle: 4.183 m/s²,
Grass trimmer:
- Left handle: 4.809 m/s²
- Right handle: 5.110 m/s²,
K=1.5 m/s2
Measured sound pressure level LpA dB(A)
(According to ISO 22868)
Brush cutter: 93.1 dB (A)
Grass trimmer: 93.4 dB (A)
K=3 dB (A)
Measured sound power level LwA dB(A)
(According to ISO 22868)
Brush cutter: 10.94 dB (A)
Grass trimmer: 108.24 dB (A)
K=3 dB (A)
Guaranteed sound power level
115 dB (A)
Line Max. Cutting Path /Diameter of line
44 cm(φ2.5mm, ,500 min-1)
Metal blade (Type/Diameter)
3-tooth
Ø230xØ25.4x1.4mm, 8,000 min-1
Rotation direction of cutting device
Counter-Clockwise
(seen from the top)
Type of aluminum pole
2 pieces
Weight when dry(kg)
.3
Engine
Name of engine
SPK44F
Type
Air-cooled; 2 cycle; vertical
Piston valve; gasoline engine
Displacement( cm3)
52
Maximum output(kW)
(in accordance with ISO 8893)
1.3
Maximum speed of engine (/min)
10,000
Specific fuel consumption at max.
engine performance（g/kWh）
≤695
Carburetor
Diaphragm-type
Ignition
Non-contact electronic ignition
Method of starting
Recoil type
Fuel used
Gasoline mixed with lubricating oil (ratio of
40:1)
Fuel tank capacity( cm3)
1200

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3. ASSEMBLY
INSTALLING THE LOWER SHAFT
1. Pull the ring out, and then insert the attachment into the connector, make sure to fix the pin into
the hole.
2. Tighten the knob bolt securely - clockwise direction.
INSTALLING HANDLE
Install handle in bracket. Position handle in a comfortable operating position and tighten four
bolts.
INSTALLING THE CARTER OF PROTECTION
Install the carter of protection on the housing. Screw it with the two provided screws.

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INSTALLING NYLON LINE CUTTER HEAD (FOR GRASS TRIMMING)
Align hole of the upper plate with hole in shaft and put a locking tool (such as a wrench).
Remove the locking nut and the lower plate.
Install the line cutter head by turning it counter clockwise until it is tight.
Remove locking tool.
To remove the cutting head, put a locking tool in the hole of the shaft. Then unscrew the cutting
head. This will have to be done tool off and cooled.
INSTALLING THE METAL BLADE (FOR BRUSHCUTTING)
When installing and removing the blade, pay attention to its sharp edges. Wear protective
gloves.
Align hole of the upper plate with hole in shaft and put a locking tool (such as a wrench).
Remove the locking nut and the lower plate.
Install the blade on the upper plate
Install the lower plate. Then, screw the locking nut to secure the installation.
Do the inverse steps to remove the blade.
INSTALLING THE SHOULDER STRAP
Hang the harness in its dedicated location on the tube. Adjust
the size of the harness properly to have a correct working
position.
Please do not use both functions at the same time. Before using the tool, check that the
tubes, cutting accessories and the harness are properly installed.
.

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4. OPERATION
RULES FOR SAFE OPERATION
WARNING △
!DANGER
All models trimmers and brush cutters can throw small stone, metal or small objects as well as
the material being cut. Read these “Rules for Safe Operation” with care.
Follow the instructions in your operator’s manual.
Read the operator’s manual carefully. Be thoroughly familiar with the controls and proper
use of the unit. Know how to stop the unit and shut off the engine. Know how to unhook
a harnessed unit quickly.
Never allow anyone unit without proper instruction. Be sure the operator wears the foot,
leg, eye, face and hearing or thrown objects. Keep the area clear of bystanders, children
and pets. Never allow children to operate or play with the unit.
Do not allow anyone to enter the operating DANGER ZONE with you. The danger zone
is an area 15 meters in radius (about 16 paces) or 50 feet.
Insist that persons in the RISK ZONE beyond the danger zone wear eye protection from
thrown objects. If the unit must be used where there are unprotected people, operate at a
low throttle speed to reduce the risk of thrown objects.
Move the stop switch to “o” position when the engine idles, insure it reliable before
cutting. Only may continue to operate the unit when stop switch is in good condition.
Routines for checking that the cutting attachment stops turning when the engine idles.
WARNING △
!DANGER
In addition to head, eye, face and ear protectors shoes to protect your feet improve
your footing on slippery surfaces. Do not wear ties, jewelry, or loose, dangling clothing
which could be caught in the unit.
Do not wear open-toed footwear, or go bare-foot or bare legged. In certain situations
you must wear total face and head protection.
△
!DANGER ZONE
NO PERSON EXCEPT OPERATOR ALLOWED 15 METERS RADIUS DANGER ZONE. EYE,
EAR, FACE, FOOT, LEG AND BODY PROTECTION MUST BE WORN BY OPERATOR.
PERSONS IN ZONE OR RISK BEYOND DANGER ZONE SHOULD WEAR EYE PROTECTION
AGAINST THROWN OBJECTS. RISK DIMINISHES WITH DISTANCE FROM DANGER ZONE.

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CUTTING WITHANYLON HEAD
For nearly all cutting, it is good to tilt the line
head
so that contact is made on the part of the line
circle where the line is moving A W A Y from
you and the debris shield. (See appropriate) This
results in the debris being thrown A W AY from
you.
WARNIN △ !DANCER
The proper debris shield must be in place on the
unit when nylon cutting line is used, The cutting
line can flap around if too much line is exposed.
Always use the plastic debris shield with cut-off
knife when using nylon cutting heads.
WARNING △
!DANGER
Tilting the head to the wrong side will shoot the debris
TOWARDS you. If the line head is held flat to the
ground so that cutting occurs on the whole line circle,
debris will be THROWN at you, drag will slow the
engine down, and you will use up a lot of line.
WARNING △
!DANGER
Use only quality nylon monofilament line of the
diameter 2.5mm, Never use wire or wire-reinforced
line in place of nylon trimmer line. Load your nylon
line cutting head only with nylon trimmer line of the
proper diameter.
WARNING △
!DANGER
Use extreme caution when operating over bare spots
and gravel, because the line can throw small rock
particles at high speeds. Debris shields on the unit
cannot stop objects which bounce or ricochet off hard
surfaces.

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CUTTING WITH A NYLON HEAD
TRIMMING:
This is feeding the trimmer carefully into the material
you wish to cut. Tilt the head slowly to direct debris
away from you. If cutting up to a barrier such as fence,
wall or tree, approach from an angle where any debris
ricocheting off the barrier will fly away from you, Move
the line head slowly until the grass is cut right up the
barrier, but do not jam (overfeed) the line into the
barrier. If trimming up to a wire mesh or chain linked
fence be careful to feed only up to wire. If you go to far
the line will snap off around the wire. Trimming can be
done to cut through weed stems one at a time. Place the
trimmer line head near the bottom of the weed-never
high up which could cause the weed to chatter and catch
the line. Rather than cut the weed right through, just use
the very end of the line to wear through the stem slowly.
WARNING△ !DANGER
Do not to use a steel blade for edging or scalping.
SCALPING AND ENGING:
Both of these are done with the line head tilted at a steep
angle Scalping is removing top growth leaving the earth
bear.
Edging is trimming the grass back where it has spread
over a sidewalk or drive way. During both edging and
scalping, hold the unit a steep angle and in a position
where the debris, and any dislodging dirt and stones,
will not come back towards you even if it ricochets off
the hard surface. Although the picture shows how to
edge and scalp every operator must find for himself the
angles which suits his body size and cutting situation.
WARNING △
!DANGER
Do not trim in any area where there are strands of
fencing wire. Wear protective safety protecting , Do not
cut where you cannot see what the cutting device is
cutting.

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CUTTING WITH A BLADE
CUTTING
CUTTING WITH WITH A ABLADE BLADE
3-tooth metal blade metal blade are provided with the machine
The metal blade is used for cutting brush and weeds up to 3/4” in diameter.
Use of saw blade with this machine is prohibited.
WARNING △ !DANGER
Do not cut with dull, cracked or damaged
meal blade.
Before cutting growth, inspect for
obstructions such as boulders, metal stakes
or strands of wire from broken fences. If
an obstruction can not be removed, mark
its location so that you can avoid it with
the blade. Rocks and metal will dull or
damage a blade. Wire can catch on the
blade head and flap around or be thrown
into the air.
WARNING △ !DANGER
DO NOT USE A BRUSH CUTTER
FOR CUTTING TREES.
WARNING △ !DANGER
Use the shoulder harness at all times
adjust both harness and harness clamp
on the unit so that the unit hangs a few
inches above ground level .The cutting
head and the debris shield should
be level in all directions. Harness the
unit on the right side of your body.

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CUTTING WITH A BLADE
SCYTHING
SCYTHING WEEDS. WEEDS. This is cutting by swinging the
blade in a level arc. It can quickly clear areas of field
grass and weeds. Scything should not be used to cut
large, tough weeds or woody growths.
NOTE
NOTE
Do not use a brush blade to cut trees which
exceed a diameter of 1/2 to 3/4 inches.
Scything can be done in both directions, or just in one
way which results in the debris being thrown away
from you.
That is using the side of the blade that it is rotating
away from you. Tilt down the blade slightly on this
same side. You will be hit by some debris if you
scythe in both directions.
Cut only with the side of the blade that the debris is
moving away from you.
If kickback occurs, the blade may be dull, or the
material so thick and hard that you should use other
tool instead of this machine.
Do not force the blade to cut. Do not change the
angle of cut after into the wood. Avoid using any
pressure or leverage which could cause the blade to
bind or crack .

14
FUEL & OIL MIXTURE
Never fill the fuel tank to the very top.
Never add fuel to the tank in a closed non-ventilated area.
Do not add fuel to this unit close to an open fire or sparks.
Be sure to wipe off spilled fuel before attempting to start engine.
Do not attempt to refuel a hot engine.
Fuel used for this model is a mixture of unleaded gasoline and approved engine lubricant.
When mixing gasoline with two-cycle engine oil, use only gasoline which contains NO
ETHANOL or METHANOL(Types of Alcohol) Use Branded 89 octane or higher
Unleaded gasoline known to be of good quality. This will help to avoid possible damage
to engine fuel lines and other engine parts.
MIXTURE RATIO IS 40:1
GASOLINE-40PART OIL-1 PART
Fuel mixture at the rate other than 40:1 may
cause damage to the engine, Ensure mixture
ratio is correct.
FUEL IMPORTANT
The engine uses two-stroke fuel, a mixture Two-stroke fuel may separate. Shake fuel
of gasoline and 2-stroke lubricant 40:1 container thoroughly before each use. Stored
fuel ages. Do not mix more fuel than you
expect to use within a month.
GASOLINE
Use branded 89 octane or higher unleaded
gasoline known to be of good quality.
FUEL AND OIL MIXTURE
STORING FUEL
Store fuel only in a clean, safe, approved Inspect fuel tank making sure that it is
container. Check and follow local clean and fill with fresh fuel. Use a mixture
ordinances. on type and location of of 40:1
storage container.

15
PREPARING FOR OPERATIONS
WHEN MIXING GASOLINE WITH TWO CYCLE ENGINE OIL, USE
ONLY GASOLINE WHICH CONTAINS NO ETHANOL OR METHANOL
(TYPES OF ALCOHOL). THIS WILL HELP TO A VOID POSSIBLE
DAMAGE TO ENGINE FUEL LINES AND OTHER ENGINE PARTS.
DO NOT MIX GASOLINE AND OIL DIRECTLY IN THE ENGINE FUEL
TANK.
IMPORTANT: Failure to follow proper fuel mix instructions may cause
damage to the engine.
1. When preparing fuel mixture, mix only the amount needed for the job
you are to do. Do not use fuel that has been stored longer than two
months. Fuel mixture stored longer than this will cause hard starting and
poor performance. If fuel mix has been stored longer than this time. It
should be removed and filled with fresh mixture.
WARNING △
!DANGER
2. Never fill the fuel tank to the very top.
3. Never add fuel to the tank in a closed non-ventilated area.
4. Do not add fuel to this unit close to an open fire or sparks.
5. Be sure to wipe off spilled fuel before attempting to start engine
6. Do not attempt to refuel a hot engine
.
CHECK POINTS BEFORE OPERATION
1. Check for loose bolts. Nuts and fittings.
2. Check the air cleaner for dirt. Clean the air filter of all dirt. Etc. before
operation.
3. Check to be sure that protector is securely in place.
4. Check to be sure that is not leak.
5. Check to be sure the blade is not running in idling speed.
WARNING △ !DANGER
The engine exhaust from this product contains chemicals known to
cause cancer, birth defects, or other reproductive harm.

16
OPERATIONS
ENGINE STARTING AND
STOPPING PROCEDURES
STARTING COLD ENGINE
Move the stop switch to “START”
position.
1. Give a gentle push on the primer pump
repeatedly (7-10times) until fuel comes
into the primer pump.
2. Cold Starts: Pull lever up to close choke.
3. Pull starter handle until engine flash. fires.
4. Push choke lever inwards (excessive cranking with choke lever will cause
flooding engine making it difficult to start).
5. Pull starter handle until engine starts.
6. Allow engine to warm up for a few minutes before using.
STARTING WARM ENGINE
If fuel tank was not run dry, pull starter. one to three times and should
start.
DO NOT USE CHOKE
If fuel tank was run dry, after refilling repeat steps 3 thru 7 in.
STARTING COLD ENGINE.
STOPPING THE ENGINE
Move switch to STOP position

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MAINTENANCE & CARE
AIR FILTER
Accumulated dust in the air filter will
reduce engine efficiency. Increase fuel
consumption and allow abrasive particles
to pass into the engine. Remove the air
filter as often as necessary to maintain in
a clean condition.
Light surface dust can readily be removed
by tapping the filter. Heavy deposits
should be washed out in suitable solvent.
Remove filter cover by loosening air
filter cover knob.
ADJUSTING CARBURETOR
NOTE
Do not adjust carburetor unless necessary.
If you have trouble with the Carburetor,
see your dealer. Improper adjustment
may cause engine damage And void
warranty.
FUEL FILTER
Fuel tank is fitted with a filter.
Filter is situated at the free end of fuel
pipe and can be picked out through fuel
port with a piece of hooked wire or The
like.
Check the fuel filter periodically. Do not
allow dust to enter into fuel tank. Clogged
filter will cause difficulty in starting
engine or abnormalities in starting engine
or abnormalities in engine performance.
When filter is dirty, replace the filter.
When the inside of the fuel tank is dirty,
it can be cleaned by rinsing the tank out
with gasoline.
CHECK SPARK PLUG
Do not attempt to remove the plug from a
hot engine in order to avoid possible
damage to the threads.

18
TROUBLE SHOOTING
Clean or replace the plug if fouled with heavy oily deposits.
Replace the plug if the center electrode is worn rounded at the end.
Spark gap 0.6-0.7mm (.023".028")
Fastening torque = 145-155kg.cm (125-135in.lb)
WARNING: Always cover the metal blade with the transportation guard
while transportation and storage.
TRANSPORT, HANDLING
The engine should be turned off when the unit is moved between work
areas.
After the engine has stopped, the muffler is still hot. Never touch hot
parts such as the muffler.
Confirm that the fuel is not leaked from tank.
EXTENDED STORAGE
Inspect, clean and repair unit if necessary.
Remove all fuel from tank.
Start engine-This will consume all fuel in fuel line and carburetor.
Remove spark plug and pour one tea spoon of clean motor oil into spark
plug hole of cylinder-replace spark plug.
Store in clean, dry, dust free area.
FAILURES such as difficulty in starting engine, irregularity in functions and
abnormality in performance can normally be prevented if careful attention is
paid to all operating instructions and maintenance procedures.
Should the engine not function properly, check the following;
That the fuel system is in good condition and fuel is flowing to the
engine.
The ignition system is in good condition and the spark plug, sparks
correctly;
Compression of the engine is adequate.
FAILURE TO START
Dispose of fuel in tank.
Insure that fuel is fresh and clean.
Check fuel filter to make sure it is clean. (Replace filter if necessary).
Make sure air filter elements are clean.
Install new, properly gapped spark plug.
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.

19
TROUBLESHOOTING GUIDE
1. FAILURE TO START
symptom
probable cause
remedy
cylinder
compress
pressure
normal
spark
plug
spark
normal
fuel
system
abnormality
these is no fuel in tank
fuel filter obstruct
Add fuel in tank
Clean fuel filter
fuel
system
normal
fuel
fuel is too dirty
there is water in fuel
there is too much
mixture ratio is improper
instead fuel
instead fuel
tear down spark plug
and dry it
mixture peroration
fuel
system
normal
high
voltage
wire
spark
normal
spark
plug
spark plug fouled with oily
deposits
Spark plug insulation damage
Spark gap is too large or small
clean the oil deposits
replace spark plug
adjust spark gap 0.6-0.7mm
high
voltage
spark
abnormality
high voltage wire breach
or break off
coil looseness
replace or tighten
tighten
fuel
system
normal
Ignition
System
normal
compress
press
is
shortage
piston ring attrite
piston ring is broken
piston ring cementation
spark plug looseness
conjoint surface of the
cylinder and crank cast leak
replace a new
replace
eliminate
tighten
eliminate
Compress
normal
High voltage wire and spark
Plug contact badness
Stop switch failure or short
circuit
tighten the spark plug cap
repair or replace