Brush Cutter
EBH340U
INSTRUCTION MANUAL
Important:
Read this instruction manual carefully before putting the Brush Cutter into operation and strictly
observe the safety regulations!
Preserve instruction manual carefully!
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SYMBOLS
You will note the following symbols when reading the instructions manual.
Keep the area of
operation clear of all
persons and pets
Read instruction Manual
Take Particular care and
Attention
Wear protective helmet,
eye and ear protection
Top permissible tool
speed
Forbidden
Keep distance
Flying object hazard
No smoking
Fuel (Gasoline)
Engine-Manual start
Emergency stop
First Aid
No open flame
Protective gloves must be
worn
ON/START
Wear sturdy boots with
nonslip soles.
OFF/STOP
Steeltoed safety boots are
recommended.
Kickback
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SAFETY INSTRUCTIONS
General Instructions
– To ensure correct operation, user has to read this
instruction manual to make himself familiar with the
handling of the Brush Cutter. Users insufficiently
informed will risk danger to themselves as well as others
due to improper handling.
– It is recommended only to lend the Brush Cutter to people
who have proven to be experienced with Brush Cutter.
Always hand over the instruction manual.
– First users should ask the dealer for basic instructions to
familiarize oneself with the handling of an engine powered
cutter.
– Children and young persons aged under 18 years must
not be allowed to operate the Brush Cutter. Persons
over the age of 16 years may however use the device for
the purpose of being trained only whilst under supervision
of a qualified trainer.
– Use Brush Cutter with the utmost care and attention.
– Operate the Brush Cutter only if you are in good physical
condition. Perform all work calmly and carefully. The
user has to accept liability for others.
– Never use the Brush Cutter after consumption of alcohol
or drugs, or if feeling tired or ill.
Intended use of the machine
– The Brush Cutter is only intended for cutter grass, weeds,
Bushes, undergrowth it should not be used for any other
purpose such as Edging or hedge cutting as this may
cause injury.
Personal protective equipment
– The clothing worn should be functional and appropriate,
i.e. it should be tight-fitting but not cause hindrance. Do
not wear either jewelry or clothing which could become
entangled with bushes or shrubs.
(1)
– In order to avoid either head-, eye-, hand-or foot injuries
as well as to protect your hearing the following protective
equipment and protective clothing must be used during
operation of the Brush Cutter.
(2)
– Always wear a helmet where there is a risk of falling
objects. The protective helmet (1) is to be checked at
regular intervals for damage and is to be replaced at the
latest after 5 years. Use only approved protective
helmets.
(3)
(4)
– The visor (2) of the helmet (or alternatively goggles)
protects the face from flying debris and stones. During
operation of the Brush Cutter always wear goggles, or a
visor to prevent eye injuries.
– Wear adequate noise protection equipment to avoid
hearing impairment (ear muffs (3), ear plugs etc.).
– The work overalls (4) protect against flying stones and
debris.
(6)
(5)
We strongly recommend that the user wears work
overalls.
– Special gloves (5) made of thick leather are part of the
prescribed equipment and must always be worn during
operation of the Brush Cutter.
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– When using the Brush Cutter, always wear sturdy shoes
(6) with a non-slip sole. This protects against injuries
and ensures a good footing.
Starting up the brush cutter
Diagrammatic figure
– Please make sure that there are no children or other
people within a working range of 15 meters (50ft), also
pay attention to any animals in the working vicinity.
– Before use always check that the Brush Cutter is safe for
operation:
Check the security of the cutting tool, the control lever for
easy action and check for proper functioning of the control
lever lock.
– Rotation of the cutting tool during idling speed is not
allowed. Check with your dealer for adjustment if in
doubt. Check for clean and dry handles and test the
function of the start/stop switch.
– Start the Brush Cutter only in accordance with the
instructions.
– Do not use any other methods for starting the engine!
– Use the Brush Cutter and the tools only for such
applications as specified.
– Only start the Brush Cutter engine, after the entire
assembly is done. Operation of the device is only
permitted after all the appropriate accessories are
attached!
– Before starting make sure that the cutting tool has no
contact with hard objects such as branches, stones etc.
as the cutting tool will revolve when starting.
– The engine is to be switched off immediately in case of
any engine problems.
– Should the cutting tool hit stones or other hard objects,
immediately switch off the engine and inspect the cutting
tool.
– Inspect the cutting tool at short regular intervals for
damage (detection of hairline cracks by means of
tapping-noise test).
– Operate the Brush Cutter only with the shoulder strap
attached which is to be suitably adjusted before putting
the Brush Cutter into operation. It is essential to adjust
the shoulder strap according to the userMs size to prevent
fatigue occurring during use. Never hold the cutter with
one hand during use.
– During operation always hold the B rush Cutter with
both hands.
Always ensure a safe footing.
– Operate the Brush Cutter in such a manner as to avoid
inhalation of the exhaust gases. Never run the engine in
enclosed rooms (risk of gas poisoning). Carbon
monoxide is an odorless gas.
ʀ
ʀ
ʀ
ʀ
ʀ
Resting
Transport
– Switch off the engine when resting and when leaving the
Brush Cutter unattended, and place it in a safe location to
prevent danger to others or damage to the machine.
Refuelling
Maintenance
Tool Replacement
– Never put the hot Brush Cutter onto dry grass or onto any
combustible materials.
– The cutting tool has to be equipped with it’s appropriate
guard.
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Never run the cutter without this guard!
– All protective installations and guards supplied with the
machine must be used during operation.
– Never operate the engine with faulty exhaust muffler.
– Shut off the engine during transport.
– During transport over long distances the tool protection
included with the equipment must always be used.
– Ensure safe position of the Brush Cutter during car
transportation to avoid fuel leakage.
– When transporting the Brush Cutter, ensure that the fuel
tank is completely empty.
– When unloading the Brush Cutter from the truck, never
drop the Engine to the ground or this may severely
damage the fuel tank.
– Except in case of emergency, never drop or cast the
Brush Cutter to the ground or this may severely damage
the Brush Cutter.
– Remember to lift the entire equipment from the ground
when moving the equipment. Dragging the fuel tank is
highly dangerous and will cause damage and leakage of
fuel, possibly causing fire.
Refuelling
– Shut off the engine during refuelling, keep away from
open flames and do not smoke.
– Avoid skin contact with mineral oil products. Do not
inhale fuel vapor. Always wear protective gloves during
refuelling. Change and clean protective clothing at
regular intervals.
– Take care not to spill either fuel or oil in order to prevent
soil contamination (environmental protection). Clean the
Brush Cutter immediately after fuel has been spilt.
3 meters
– Avoid any fuel contact with your clothing. Change your
clothing instantly if fuel has been spilt on it (to prevent
clothing catching fire).
– Inspect the fuel cap at regular intervals making sure that it
can be securely fastened and does not leak.
– Carefully tighten the fuel tank cap. Change location to
start the engine (at least 3 meters away from the place of
refuelling).
– Never refuel in closed rooms. Fuel vapors accumulate
at ground lever (risk of explosions).
– Only transport and store fuel in approved containers.
Make sure the fuel stored is not accessible to children.
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Method of operation
– Only use the Brush cutter in good light and visibility.
During the winter season beware of slippery or wet areas,
ice and snow (risk of slipping). Always ensure a safe
footing.
– Never cut above waist height.
– Never stand on a ladder and run the Brush cutter.
– Never climb up into trees to perform cutting operation with
the Brush cutter.
– Never work on unstable surfaces.
– Remove sand, stones, nails etc. found within the working
range.
– Foreign particles may damage the cutting tool and can
cause dangerous kick-backs.
– Before commencing cutting, the cutting tool must have
reached full working speed.
Kickback
Caution:
Kickback
– When operating the brush cutter, uncontrolled kickback
may occur.
– This is particularly the case when attempting to cut within
a blade segment between 12 and 2 o’clock.
– Never apply the brush cutter within a segment between
12 and 2 o’clock.
– Never apply this segment of the brush cutter blade to
solids, such as bushes and trees, etc., having a diameter
in excess of 3 cm or the brush cutter will be deflected at
great force with the risk of injuries.
Diagrammatic
figure
Kickback prevention
To avoid kickbacks, observe the following:
– Operation within a blade segment between 12 and 2
o’clock presents positive hazards, especially when using
metal cutting tools.
– Cutting operations within a blade segment between 11
and 12 o’clock, and between 2 and 5 o’clock, must only
be performed by trained and experienced operators, and
then only at their own risk.
Easy cutting with almost no kickback is possible within a
blade segment between 8 and 11 o’clock.
Diagrammatic
figure
Cutting Tools
Employ only the correct cutting tool for the job in hand.
For cutting thick materials, such as weed, high grass,
bushes, shrubs, underwood, thicket etc. (max. 2 cm dia.
thickness). Perform this cutting work by swinging the
brush cutter evenly in half-circles from right to left (similar to
using a scythe).
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Maintenance instructions
– The condition of the cutter, in particular of the cutting tool
of the protective devices and also of the shoulder strap
must be checked before commencing work. Particular
attention is to be paid to the cutting blades which must be
correctly sharpened.
– Turn off the engine and remove spark plug connector
when replacing or sharpening cutting tools, and also
when cleaning the cutter or cutting tool.
Never straighten or weld damaged cutting tools.
– Operate the Brush cutter with as little noise and
contamination as possible. In particular check the
correct setting of the carburetor.
– Clean the Brush cutter at regular intervals and check that
all screws and nuts are well tightened.
– Never service or store the Brush cutter in the vicinity of
naked flames.
– Always store the Brush cutter in locked rooms and with an
emptied fuel tank.
Observe the relevant accident prevention instructions issued by the relevant trade associations and by the
insurance companies.
Do not perform any modifications on the Brush cutter as this will endanger your safety.
The performance of maintenance or repair work by the user is limited to those activities as described in the
instruction manual. All other work is to be done by an Authorized Service Agent. Use only genuine spare
parts and accessories released and supplied by MAKITA.
Use of non-approved accessories and tools means increased risk of accidents.
MAKITA will not accept any liability for accidents or damage caused by the use of non-approved cutting tools
and fixing devices of cutting tools, or accessories.
First Aid
In case of accident make sure that a first-aid box is available
in the vicinity of the cutting operations. Immediately
replace any item taken from the first aid box.
When asking for help, please give the following
information:
– Place of accident
– What happened
– Number of injured persons
– Kind of injuries
– Your name
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TECHNICAL DATA
EBH340U
U handle
1765 x 615 x 425
7.5
Model
Dimensions : length x width x height
(without cutting blade)
mm
kg
Mass (without plastic guard and cutting blade)
Volume (fuel tank)
L
mm
cm3
0.65
Cutting attachments (cutter blade dia.)
Engine displacement
305
33.5
-1
Maximum engine performance
Maximum rotational frequency of the spindle
kw
-1
1.07 at 7000 min
6850
min
Engine speed at recommended max. spindle
rotational frequency
10000
-1
min
Fuel consumption at
max. engine performance
0.458
kg/h
Specific fuel consumption at
max. engine performance
426
g/kwh
-1
Engine speed at idling
Clutch engagement speed
Carburetor (Diaphragm - carburetor)
Ignition system
Spark plug
min
3000
-1
min
4100
type
type
type
mm
WALBRO WYL
Solid state ignition
NGK CMR6A
0.7 - 0.8
Electrode gap
Fuel
Automobile gasoline
SAE 10W-30 oil API Classification Class
SF or higher (4-stroke engine for automobile)
Engine oil
Gear ratio
14/19
The data is prepared taking equally into account the idling and racing or wide-open throttle speed operating
modes.
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DESIGNATION OF PARTS
ᡥ
ᡦ
ᡬ
EBH340U
ᡫ
ᡤ
Brush Cutter
ᡨ
ᡩ
ᡭ
ᡪ
ᡰ
ᡯ
ᡱ
ᡮ
GB DESIGNATION OF PARTS
1
2
Fuel Tank
Rewind Starter
Air Cleaner
I-O Switch (on/off)
Spark Plug
3
ᡤ
4
5
6
Exhaust Muffler
Clutch Case
Hanger
7
ᡧ
ᡵ
ᡴ
8
9
Handle
10
11
12
13
14
Throttle Lever
Control Cable
Shaft
፹፸፧
ᡳ
Protector
ᡲ
Gear Case/Head Case
፹፹፧
15 Handle Holder
16 Cutter Blade
17
18
Fuel Filler Cap
Starter Knob
ᡢ
19 Primmer Pump
20 Choke Lever
21
Exhaust Pipe
ᡣ
22 Oil Gauge
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ASSEMBLY OF ENGINE AND SHAFT
CAUTION: Before doing any work on the brush
cutter, always switch off the motor and
pull the spark plug connector off the
spark plug.
Always wear protective gloves!
CAUTION: Start the brush cutter only after having
assembled it completely.
– After checking the parts, fasten the drive shaft to the
engine with four bolts M6 x 30 (1).
(1)
– Mount the stand by two screws M5 x 12 (2).
(2)
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MOUNTING OF HANDLE For BH3600
MOUNTING OF HANDLE
– Place the handle with the throttle lever on the handle
holder on the right side (to be held by the right hand) and
the other on the left side.
(4)
– Fit the handle edge to the handle holder groove, and
provisionally fix the upper side (3) of the handle holder by
four bolts M5 x 25 (4).
(3)
– Adjust the handle to an angle easy to manipulate, and
tighten the bolt (4) uniformly on the right and left sides.
– Fix the control cable to the shaft by two clips (5).
– Fix the control cable to the handle by clip (6).
(5)
(6)
– The purpose of the detent lock is to prevent the engine
from rotating relative to the drive shaft while operating the
starter or transporting the equipment from place to place.
The detent should be unlocked while the unit is being
used.
Hanger
UNLOCK
Detent lock
LOCK
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MOUNTING OF CONTROL CABLE
– Remove the air cleaner cover.
(3)
(2)
– Place the control cable (1) in the adjusting bolt (2), and
shift the swivel (3) so that the cable will be put in the
swivel groove. At this time, the round-hole side of the
swivel will be oriented toward the inner wire end-metal
fitting.
– Release the swivel, and confirm that the inner wire-end
metal fitting will be placed in the hole.
(1)
– Mount the air cleaner cover.
Swivel
Control cable
Insert
Round-hole
End fitting
CONNECTION OF SWITCH CORD
– Connect the switch cords to the two cords from the engine
by inserting one into the other.
– Fix the cord connector by clamp (4).
(4)
ADJUSTMENT OF CONTROL CABLE
Adjust the control cable by adjusting bolt so that it will have
1 to 2 mm play when the throttle lever is set to the
low-speed position by carburetor adjusting bolt. (Be careful
that the cutter blade will not turn in idling.)
1-2 mm
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MOUNTING OF PROTECTOR
– The cutter blade must be well polished, free of cracks or breakage.
If the cutter blade hits against a stone during operation, stop the
engine and check the blade immediately.
– Polish or replace the cutter blade every three hours of operation.
CAUTION: The appropriate protector must always be installed, for your own safety and in order to comply
with accident-prevention regulations.
Operation of the equipment without the guard being in place is not permitted.
– The outside diameter of the cutter blade must be 305mm (12”). Never use any blades surpassing
305mm (12”) in outside diameter.
– Fix the protector (1) to the clamp (3) with two bolts M6 x
20 (2).
(2)
(3)
(1)
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MOUNTING OF CUTTER BLADE
Turn the machine upside down, and you can replace the
cutter blade easily.
– Insert the hex wrench through the hole in the gear case
and rotate the receiver washer (4) until it is locked with
the hex wrench.
(1)
(2)
(3)
– Loosen the nut (1) (left-hand thread) with the socket
wrench and remove the nut (1), cup (2), and clamp
washer (3).
(4)
Mounting of cutter blade
With the hex wrench still in place.
– Mount the cutter blade onto the shaft so that the guide of
the receiver washer (4) fits in the arbor hole in the cutter
blade. Install the clamp washer (3), cup (2), and secure
the cutter blade with the nut (1).
[Tightening torque: 13 - 23 Nžm]
NOTE: Always wear gloves when handling the cutter blade.
NOTE: The cutter blade-fastening nut (with coned disc
spring) is a consumable part.
If there appears any wear or deformation on the
coned disc spring, replace the nut.
– Make sure that the blade is the left way up.
Rotation
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BEFORE START OF OPERATION
Inspection and Refill of Engine Oil
– Perform the following procedure, with the engine cooled down.
– While keeping the engine level, remove the oil gauge, and confirm that the oil is filled within the upper and
lower limit marks.
When the oil is in short in such a way that the oil gauge touches the oil only by its tip, in particular with the oil
gauge remaining inserted in the crankcase without screwing-in (Fig. 1), refill new oil near the port (Fig. 2).
– For reference, the oil refill time is about 15 h (refill frequency: 15 times).
– If the oil changes in color or mixes with dirt, replace it with new one. (For the interval and method of
replacement, refer to P. 21)
Recommended oil: SAE 10W-30 oil of API Classification, Class SF or higher (4-stroke engine for
automobile)
Oil volume:
Approx. 0.1 L
Note: If the engine is not kept upright, oil may go into around the engine, and may be refilled excessively.
If the oil is filled above the limit, the oil may be contaminated or may catch fire with white.
Point 1 in Replacement of Oil : “Oil Gauge”
– Remove dust or dirt near the oil refill port, and detach the oil gauge.
– Keep the detached oil gauge free of sand or dust. Otherwise, any sand or dust adhering to the oil
gauge may cause irregular oil circulation or wear on the engine parts, which will result in troubles.
– As an example to keep the oil gauge clean, it is recommended to insert the oil gauge on its knob side
into the engine cover, as shown in Fig.3.
Upper limit of oil level
(Lower part of oil refill
port threaded part)
If oil adheres
around this tip,
refill new oil.
Oil gauge
Fig.3
Fig.2
Fig.1
(1) Keep the engine level, and detach the oil gauge.
(2) Fill oil up to the edge of the oil refill port. (Refer to Fig.2).
Feed oil with the lubricant refill container.
(3) Securely tighten the oil gauge. Insufficient tightening
may cause oil leakage.
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Point 2 in Replacement of Oil: “If oil spills out”
– If oil spills out between the fuel tank and engine main unit, the oil is sucked into through the cooling air
intake port, which will contaminate the engine. Be sure to wipe out spilt oil before start of operation.
REFUELING
Handling of Fuel
It is necessary to handle fuel with utmost care. Fuel may contain substances similar to solvents. Refueling
must be performed in a sufficiently ventilated room or in the open air. Never inhale fuel vapor, and keep fuel
away from you. If you touch fuel repeatedly or for a long time, the skin becomes dry, which may cause skin
disease or allergy. If fuel enters into the eye, clean the eye with fresh water. If your eye remains still irritated,
consult your doctor.
Storage Period of Fuel
Fuel should be used up within a period of 4 weeks, even if it is kept in a special container in a well-ventilated
shade.
If a special container is not used or if the container is not covered, fuel may deteriorate in one day.
STORAGE OF MACHINE AND REFILL TANK
– Keep the machine and tank at a cool place free from direct sunshine.
– Never keep the fuel in the cabin or trunk.
Fuel
The engine is a four-stroke engine. Be sure to use an automobile gasoline (regular gasoline or premium
gasoline).
Points for Fuel
– Never use a gasoline mixture which contains engine oil. Otherwise, it will cause excessive carbon
accumulation or mechanical troubles.
– Use of deteriorated oil will cause irregular startup.
Refueling
WARNING: INFLAMMABLES STRICTLY PROHIBITED
Gasoline used: Automobile gasoline (unleaded gasoline)
– Loosen the tank cap a little so that there will be no
difference in atmospheric pressure.
Fuel tank cap
– Detach the tank cap, and refuel, discharging air by tilting
the fuel tank so that the refuel port will be oriented
upward. (Never refill fuel full to the oil refill port.)
Fuel upper limit
– Wipe well the periphery of the tank cap to prevent foreign
matter from entering into the fuel tank.
– After refueling, securely tighten the tank cap.
ʀ
If there is any flaw or damage on the tank cap, replace
it.
Fuel tank
ʀ
The tank cap is consumable, and therefore should be
renewed every two to three years.
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CORRECT HANDLING OF MACHINE
Attachment of shoulder strap
– Adjust the strap length so that the cutter blade will be kept
parallel with the ground.
Detachment
– In an emergency, pull the release belt (1) strongly upward,
and you can detach the machine from you.
Be extremely careful to maintain control of the machine at
this time. Do not allow the machine to be deflected
toward you or anyone in the work vicinity.
(1)
WARNING: Failure to maintain
complete control of the
machine at all could result
in serious bodily injury or
DEATH.
Hanger
POINTS IN OPERATION AND HOW TO STOP
Observe the applicable accident prevention regulations!
STARTING
Move at least 3m away from the place of refuelling. Place the brush cutter on a clean piece of ground taking
care that the cutting tool does not come into contact with the ground or any other objects.
A:Cold start
I-O switch (1)
1) Set this machine on a flat space.
Throttle lever
OPERATION
Low
speed
High
speed
For machine with U Handle or J Handle
CLOSE
1) Set the I-O switch (1) to OPERATION.
2) Choke lever
Close the choke lever.
Choke opening:
– Full closing in cold or when the engine is cold.
– Full or half opening in restart just after stop of
operation.
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3) Primer pump
Continue to push the primer pump until fuel enters into
the primer pump. (In general, fuel enters into the primer
pump by 7 to 10 pushes.)
Carburettor
If the primer pump is pushed excessively, an excess of
gasoline returns to the fuel tank.
Primer Pump
4) Recoil starter
– Pull the start knob gently until it is hard to pull
(compression point). Then, return the start knob, and
pull it strongly.
– Never pull the rope to the full. Once the start knob is
pulled, never release your hand immediately. Hold the
start knob until it returns to its original point.
5) Choke lever
When the engine starts, open the choke lever.
– Open the choke lever progressively while checking
the engine operation. Be sure to open the choke lever
to the full in the end.
– In cold or when the engine is cooled down, never
open the choke lever suddenly. Otherwise, the engine
may stop.
OPEN
6) Warm-up operation
Continue warm-up operation for 2 to 3 minutes.
Note: − If the starter handle is pulled repeatedly when the choke lever remains at “START” position, the
engine will not start easily due to excessive fuel intake.
− In case of excessive fuel intake, remove the spark plug and pull the starter handle slowly to remove
excess fuel. Also, dry the electrode section of the spark plug.
Caution during operation:
If the throttle lever is opened fully in a no-load operation, the engine rotation is increased to 10,000 min-1 or
more. Never operate the engine at a higher speed than required and at an approximate speed of 6,000 -
8,500 min-1.
B: Startup after warm-up operation
1) Push the primer pump repeatedly.
2) Keep the throttle lever at the idling position.
3ᯙ Pull the recoil starter strongly.
4) If it is difficult to start the engine, open the throttle by about 1/3.
Pay attention to the cutter blade which may rotate.
Attention in Operation
When the engine is operated upside down, white smoke may come out from the muffler.
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STOPPING
1) Release the throttle lever (6) fully, and when the engine
rpm has lowered, set the I-O switch (1) to STOP the
engine will now stop.
STOP
2) Be aware that the cutting head may not stop immediately
and allow it to slow down fully.
I-O switch (1)
Throttle lever (6)
ADJUSTMENT OF LOW-SPEED ROTATION (IDLING)
When it is necessary to adjust the low-speed rotation (idling), perform it by the carburetor adjusting screw.
CHECKUP OF LOW-SPEED ROTATION
Adjusting screw
– Set the low-speed rotation to 3000min-1.
If it is necessary to change the rotation speed, regulate
the adjusting screw (illustrated on the left), with Phillips
screwdriver.
Carburetor
– Turn the adjusting screw to the right, and the engine
rotation will increase. Turn the adjusting screw to the left,
and the engine rotation will drop.
– The carburetor is generally adjusted before shipment. If it
is necessary to readjust it, please contact Authorized
Service Agent.
RESHARPENING THE CUTTING TOOL
CAUTION: The cutting tools mentioned below must only
be resharpened by an authorized facility.
Manual resharpening will result in imbalances
of the cutting tool causing vibrations and
damage to the equipment.
– cutter blade (star blade (4 teeth), eddy blade (8 teeth))
An expert resharpening and balancing service is provided
by Authorized Service Agents.
NOTE: To increase the service life of the cutter blade (star
blade, eddy blade) it may be turned over once, until
both cutting edges have become blunt.
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SERVICING INSTRUCTIONS
CAUTION: Before doing any work on the brush cutter, always stop the engine and pull the plug cap off the
spark plug (see “checking the spark plug”).
Always wear protective gloves!
To ensure a long service life and to avoid any damage to the equipment, the following servicing
operations should be performed at regular intervals.
Daily checkup and maintenance
– Before operation, check the machine for loose screws or missing parts. Pay particular attention to the
tightness of the cutter blade.
– Before operation, always check for clogging of the cooling air passage and the cylinder fins.
Clean them if necessary.
– Perform the following work daily after use:
• Clean the brush cutter externally and inspect for damage.
• Clean the air filter. When working under extremely dusty conditions, clean the filter the several
times a day.
• Check the blade for damage and make sure it is firmly mounted.
• Check that there is sufficient difference between idling and engagement speed to ensure that the
cutting tool is at a standstill while the engine is idling (if necessary reduce idling speed).
If under idling conditions the tool should still continue to run, consult your nearest Authorized
Service Agent.
– Check the functioning of the I-O switch, the lock-off lever, the throttle lever.
REPLACEMENT OF ENGINE OIL
Deteriorated engine oil will shorten the life of the sliding and rotating parts to a great extent. Be sure to check
the period and quantity of replacement.
ATTENTION: In general, the engine main unit and engine oil still remain hot just after the engine is
stopped. In replacement of oil, confirm that the engine main unit and engine oil are
sufficiently cooled down. Otherwise, there may remain a risk of scald.
Note: If the oil filled above the limit, it may be contaminated or may catch fire with white smoke.
Interval of replacement: Initially, every 20 operating hours, and subsequently every 50 operating hours
Recommended oil:
SAE10W-30 oil of API Classification SF Class or higher (4-stroke engine oil for
automobile)
In replacement, perform the following procedure.
1) Confirm that the tank cap is tightened securely.
2) Detach the oil gauge.
Fuel tank cap
Keep the oil gauge free from dust or dirt.
Oil gauge
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3) Place waste or paper near the oil refill port.
Waste or paper
4) Detach the oil gauge, and drain oil, tilting the main unit
toward the oil refill port.
Drain oil in a container.
5) Keep the engine level, and feed new oil up to the edge of
the oil refill port.
In refill, use a lubricant refill container.
6) After refill, securely tighten the oil gauge. Insufficient
tightening of the oil gauge will lead to oil leakage.
POINTS ON OIL
– Never discard replaced engine oil in garbage, earth or sewage ditch. Disposal of oil is regulated by
law. In disposal, always follow the relevant laws and regulations. For any points remaining unknown,
contact Authorized Service Agent.
– Oil will deteriorate even when it is kept unused. Perform inspection and replacement at regular
intervals (replace with new oil every 6 months).
22
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CLEANING OF AIR CLEANER
DANGER: INFLAMMABLES STRICTLY PROHIBITED
Interval of Cleaning and Inspection: Daily (every 10 operating hours)
– Turn the choke lever to the full close side, and keep the
carburetor off from dust or dirt.
Plate
Element (sponge)
Air cleaner cover
– Remove the air cleaner cover-fixing bolts.
– Pull the cover lower side and detach the air cleaner cover.
– If oil adheres to the element (sponge), squeeze it firmly.
– For heavy contamination:
1) Remove the element (sponge), immerse it in warm
water or in water-diluted neutral detergent, and dry it
completely.
2) Clean the element (felt) with gasoline, and dry it
completely.
Breather Part
Element (felt)
Fixing bolt
– Before attaching the element, be sure to dry it completely.
Insufficient drying of the element may lead to difficult
startup.
– Wipe out with waste cloth, oil adhering around the air
cleaner cover and plate breather.
– Immediately after cleaning is finished, attach the cleaner
cover and tighten it with fixing bolts. (In remounting, first
place the upper claw, and then the lower claw.)
Points in Handling Air Cleaner Element
– Clean the element several times a day, if excessive
dust adheres to it.
Pick this part and remove the
element (felt).
– If operation continues with the element remaining
not cleared of oil, oil in the air cleaner may fall
outside, resulting in oil contamination.
CHECKING THE SPARK PLUG
– Only use the supplied universal wrench to remove or to
install the spark plug.
– The gap between the two electrodes of the spark plug
should be 0.7-0.8mm (0.028”-0.032”). If the gap is too
wide or too narrow, adjust it. If the spark plug is clogged
with carton or fouled, clean it thoroubhly or replace it.
0.7mm-0.8mm
(0.028”-0.032”)
CAUTION: Never touch the spark plug connector while the
engine is running (danger of high voltage
electric shock).
SUPPLY OF GREASE TO GEAR CASE
Gear case
Grease hole
– Supply grease (Shell Alvania 2 or equivalent) to the gear
case through the grease hole every 30 hours. (Genuine
MAKITA grease may be purchased from your MAKITA
dealer.)
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CLEANING OF FUEL FILTER
Fuel filter (1)
Hose clamp
Fuel pipe
WARNING: INFLAMMABLES STRICTLY PROHIBITED
Interval of Cleaning and Inspection: Monthly (every 50
operating hours)
Suction head in the fuel tank
– The fuel filler (1) of the suction head is used to filler the
fuel required by the carburetor.
– A periodical visual inspection of the fuel filter is to be
conducted. For that purpose open the tank cap, use a
wire hook and pull out the suction head through the tank
opening. Filters found to have hardened, been polluted
or clogged up are to be replaced.
– Insufficient fuel supply can result in the admissible
maximum speed being exceeded. It is therefore
important to replace the fuel filter at least quarterly to
ensure satisfactory fuel supply to the carburetor.
REPLACEMENT OF FUEL PIPE
CAUTION: INFLAMMABLES STRICTLY
PROHIBITED
Fuel pipe
Interval of Cleaning and Inspection: Daily (every 10
operating hours)
Replacement: Annually (every 200 operating hours)
Replace the fuel pipe every year, regardless of operating
frequency. Fuel leakage may lead to fire.
If any leakage is detected during inspection, replace the oil
pipe immediately.
INSPECTION OF BOLTS, NUTS AND SCREWS
– Retighten loose bolts, nuts, etc.
– Check for fuel and oil leakage.
– Replace damaged parts with new ones for safety
operation.
CLEANING OF PARTS
– Keep the engine always clean.
– Keep the cylinder fins free of dust or dirt. Dust or dirt adhering to the fins will cause seizure.
REPLACEMENT OF GASKETS AND PACKINGS
In reassembling after the engine is dismounted, be sure to replace the gaskets and packings with new ones.
Any maintenance of adjustment work that is not included and described in this manual is only to be performed
by Authorized Service Agents.
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STORAGE
WARNING: When draining the fuel, be sure to stop the engine and confirm that the
engine cools down.
Just after stopping the engine, it may still hot with possibility of burns, inflammability
and fire.
ATTENTION: When the machine is kept out of operation for a long time, drain up
all fuel from the fuel tank and carburetor, and keep it at a dry and
clean place.
– Drain up fuel from the fuel tank and carburetor according to the
following procedure:
1) Remove the fuel tank cap, and drain fuel completely.
If there is any foreign matter remaining in the fuel tank, remove
it completely.
2) Pull out the fuel filter from the refill port using a wire.
3) Push the primer pump until fuel is drained from there, and
drain fuel coming into the fuel tank.
4) Reset the filter to the fuel tank, and securely tighten the fuel
tank cap.
5) Then, continue to operate the engine until it stops.
– Remove the spark plug, and drip several drops of engine oil
through the spark plug hole.
– Gently pull the starter handle so that engine oil will spread over the
engine, and attach the spark plug.
– Attach the cover to the cutter blade.
– During storage, keep the rod horizontal or keep the machine
upright with the blade edge oriented upward. (In this case, pay full
attention to prevent the machine from falling.)
Never store the machine with the cutter blade edge oriented
downward. Lubricating oil may spill out.
– Keep the drained fuel in a special container in a well-ventilated
shade.
Attention after long-time storage
– Before startup after long-time shutdown, be sure to replace oil (refer to P 21). Oil will deteriorate
while the machine is kept out of operation.
25
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Fault location
Fault
System
Observation
Cause
Fault in fuel supply or compression
system, mechanical defect
Engine not starting
or with difficulty
Ignition system
Ignition spark O.K.
STOP-switch operated, wiring fault
or short circuit, spark plug or
connector defective, ignition module
faulty
No ignition spark
Fuel tank filled
Incorrect choke position, carburetor
defective, fuel supply line bent or
blocked, fuel dirty.
Fuel supply
Cylinder bottom gasket defective,
crankshaft seals damaged, cylinder
or piston rings defective or improper
sealing of spark plug
Compression
No compression
when pulled over
Broken starter spring, broken parts
inside of the engine
Mechanical fault
Fuel supply
Starter not engaging
Warm start
problems
Tank filled ignition
spark existing
Carburetor contaminated, have it
cleaned
Engine starts but
dies
Tank filled
Incorrect idling adjustment,
carburetor contaminated
Fuel tank vent defective, fuel supply
line interrupted, cable or
STOP-switch faulty
Insufficient
performance
Several systems
may simultaneously
be affected
Engine idling poor
Air filter contaminated, carburetor
contaminated, muffler clogged,
exhaust duct in the cylinder clogged
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Operating time
Daily
(10h)
Corres-
Before
After
Shutdown
/rest
30h
50h
200h
operation lubrication
ponding P
Item
Inspect/
clean
ɼ
16
21
24
Engine oil
ɼ*1
Replace
Inspect
Tightening
parts (bolt, nut)
ɼ
ɼ
Clean/
inspect
J
25
18
18
15
20
23
23
24
24
J
23
24
Fuel tank
ɼ*3
Drain fuel
Check
function
Throttle lever
Stop switch
ɼ
Check
function
ɼ
Cutting blade
ɼ
ɼ
ɼ
ɼ
ɼ
ɼ
ɼ
Inspect
Low-speed
rotation
Inspect/
adjust
Air cleaner
Clean
Ignition plug
Inspect
Cooling air
duct
Clean/
inspect
Inspect
Replace
Refill
Fuel pipe
ɿ*2
Gear-case
grease
ɼ
Fuel filter
Clean/
replace
ɼ
Clearance
between air
intake valve
and air
ɿ*2
J
Adjust
discharge valve
ɿ*2
ɿ*2
Oil tube
Inspect
Engine
overhaul
J
ɼ*3
25
Carburetor
Drain fuel
*1 Perform initial replacement after 20h operation.
*2 For the 200 operating hour inspection, request Authorized Service Agent or a machine shop.
*3 After emptying the fuel tank, continue to run the engine and drain fuel in the carburetor.
27
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TROUBLESHOOTING
Before making a request for repairs, check a trouble for yourself. If any abnormality is found, control your
machine according to the description of this manual. Never tamper or dismount any part contrary to the
description. For repairs, contact Authorized Service Agent or local dealership.
State of abnormality
Probable cause (malfunction)
Failure to operate primer pump
Low pulling speed of starter rope
Lack of fuel
Remedy
Push 7 to 10 times.
Pull strongly.
Feed fuel.
Clogged fuel filter
Clean
Broken fuel tube
Straighten fuel tube
Deteriorated fuel
Deteriorated fuel makes starting more
difficult. Replace with new one.
(Recommended replacement: 1 month)
Excessive suction of fuel
Set throttle lever from medium speed to
high speed, and pull starter handle until
engine starts. Once engine starts, cutter
blade starts rotating. Pay full attention
to cutter blade.
If engine will not start still, remove spark
plug, make electrode dry, and reassemble
them as they originally are. Then, start as
specified.
Engine does not start
Detached plug cap
Attach securely
Clean
Contaminated spark plug
Abnormal clearance of spark plug
Other abnormality of spark plug
Abnormal carburetor
Adjust clearance
Replace
Make request for inspection and
maintenance.
Starter rope cannot be pulled
Abnormal drive system
Insufficient warm-up
Make request for inspection and
maintenance
Make request for inspection and
maintenance
Perform warm-up operation
Choke lever is set to “CLOSE”
although engine is warmed up
Set to “OPEN”
Clean
Clogged fuel filter
Engine stops soon
Engine speed does
not increase
Contaminated or clogged air
cleaner
Clean
Abnormal carburetor
Make request for inspection and
maintenance
Abnormal drive system
Make request for inspection and
maintenance
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State of abnormality
Probable cause (malfunction)
Remedy
Cutter blade does not Loosened cutter blade-tightening
rotate
Tighten securely
nut
Twigs caught by cutter blade or
dispersion-preventing cover
Remove foreign matter
Stop engine
immediately
Abnormal drive system
Make request for inspection and
maintenance.
Main unit vibrates
abnormally.
Broken, bent or worn cutter blade
Replace cutter blade
Tighten securely
Loosened cutter blade-tightening
nut
Shifted convex part of cutter blade
and cutter blade support fitting
Attach securely
Stop engine
immediately
Abnormal drive system
Make request for inspection and
maintenance
Cutter blade does not High idling rotation
stop immediately.
Adjust
Detached throttle wire
Attach securely
Stop engine
immediately
Abnormal drive system
Make request for inspection and
maintenance
Engine does not stop.
Detached connector
Attach securely
Abnormal electric system
Make request for inspection and
maintenance.
Run engine at idling,
and set choke lever
to CLOSE.
When the engine does not start after warm-up operation:
If there is no abnormality found for the check items, open the throttle by about 1/3 and start the engine.
29
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MEMO
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MEMO
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Makita Corporation
Anjo, Aichi, Japan
885002-5
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