Makita EBH340U User Manual

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!

Thank you very much for purchasing the MAKITA Brush Cutter. We are pleased
to recommend to you the MAKITA Brush Cutter which is the result of a long
development programme and many years of knowledge and experience.
Please read this booklet which refers in detail to the various points that will
demonstrate its outstanding performance. This will assist you to obtain the best
possible result from your MAKITA Brush Cutter.

Table of Contents Page

Symbols............................................................................3

Safety instructions ............................................................4

Technical data...................................................................9

Designation of parts ........................................................10

Assembly of engine and shaft.........................................11

Mounting of handle .........................................................12

Mounting of control cable................................................13

Mounting of protector......................................................14

Mounting of cutter blade .................................................15

Before start of operation .................................................16

Correct handling of machine...........................................18

Points in operation and how to stop................................18

Resharpening the cutting tool .........................................20

Servicing instructions......................................................21

Storage ...........................................................................25

2

SYMBOLS

You will note the following symbols when reading the instructions manual.

Read instruction Manual

Keep the area of
operation clear of all
persons and pets

Take Particular care and
Attention

Forbidden

Keep distance

Flying object hazard

No smoking

No open flame

Protective gloves must be
worn

Wear sturdy boots with
nonslip soles.
Steeltoed safety boots are
recommended.

Kickback

Wear protective helmet,
eye and ear protection

Top permissible tool
speed

Fuel (Gasoline)

Engine-Manual start

Emergency stop

First Aid

ON/START

OFF/STOP

3

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.
– 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.
– 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.
– 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.

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.

4

(1)

(2)

(3)

(4)

(5)

(6)

– 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

– 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 users size to prevent

fatigue occurring during use. Never hold the cutter with

one hand during use.
– During operation always hold the B

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.
– 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.
– 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.

rush Cutter with

Diagrammatic figure

٨

Resting

٨

Transport

٨

Refuelling

٨

Maintenance

٨

Tool Replacement

5

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.
– 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.

3 meters

6

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

– 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.

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.

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).

Caution:
Kickback

Diagrammatic

figure

Diagrammatic

figure

7

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

8

TECHNICAL DATA

Model

EBH340U

U handle

Dimensions : length x width x height
(without cutting blade) mm

Mass (without plastic guard and cutting blade) kg 7.5

Volume (fuel tank) L 0.65

Cutting attachments (cutter blade dia.) mm 305

Engine displacement cm

Maximum engine performance kw 1.07 at 7000 min-1

Maximum rotational frequency of the spindle min

Engine speed at recommended max. spindle
rotational frequency min

Fuel consumption at
max. engine performance kg/h

Specific fuel consumption at
max. engine performance g/kwh

Engine speed at idling min

Clutch engagement speed min

Carburetor (Diaphragm - carburetor) type WALBRO WYL

Ignition system type Solid state ignition

3

-1

-1

-1

-1

1765 x 615 x 425

33.5

6850

10000

0.458

426

3000

4100

Spark plug type NGK CMR6A

Electrode gap mm 0.7 - 0.8

Fuel Automobile gasoline

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.

SAE 10W-30 oil API Classification Class

SF or higher (4-stroke engine for automobile)

9

DESIGNATION OF PARTS

EBH340U
Brush Cutter

㽿

㾁

㽴

㾅

㾄

㾃

㾂

㽲

㽳

㽽

㽾

㽻

㽷

㪉㪉㩷

㽵

㽼

㽸

㽹

㽺

㾀

GB DESIGNATION OF PARTS

1 Fuel Tank
2 Rewind Starter
3

Air Cleaner

4

I-O Switch (on/off)
5 Spark Plug
6

Exhaust Muffler
7

Clutch Case
8

Hanger
9

Handle

10

Throttle Lever

11

㪉㪈㩷

Control Cable

12

Shaft

13

Protector

14

Gear Case/Head Case

15 Handle Holder
16 Cutter Blade
17

Fuel Filler Cap

18

Starter Knob

19 Primmer Pump
20 Choke Lever
21

Exhaust Pipe

22 Oil Gauge

㽶

㽴

10

ASSEMBLY OF ENGINE AND SHAFT

CAUTION: Before doing any work on the brush

CAUTION: Start the brush cutter only after having

– After checking the parts, fasten the drive shaft to the

engine with four bolts M6 x 30 (1).

– Mount the stand by two screws M5 x 12 (2).

cutter, always switch off the motor and
pull the spark plug connector off the
spark plug.
Always wear protective gloves!

assembled it completely.

(1)

(2)

11

MOUNTING OF HANDLE For BH3600

K

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.

– 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).

– 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).

– 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.

(4)

(3)

(6)

(5)

Hanger

UNLOC

Detent lock

LOCK

12

MOUNTING OF CONTROL CABLE

– Remove the air cleaner cover.
– 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.

– Mount the air cleaner cover.

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).

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)

Control cable

Round-hole

(2)

End fitting

1-2 mm

(3)

Swivel

Insert

(4)

13

R

MOUNTING OF PROTECTO

– 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

– 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).

with accident-prevention regulations.
Operation of the equipment without the guard being in place is not permitted.

(2)

(3)

(1)

14

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.

– Loosen the nut (1) (left-hand thread) with the socket

wrench and remove the nut (1), cup (2), and clamp
washer (3).

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 N࡮m]

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

(1)

(2)

(3)

(4)

15

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

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.

automobile)

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.

(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).

(3) Securely tighten the oil gauge. Insufficient tightening

If oil adheres
around this tip,
refill new oil.

Fig.1

Feed oil with the lubricant refill container.

may cause oil leakage.

Upper limit of oil level
(Lower part of oil refill
port threaded part)

Fig.2

16

Oil gauge

Fig.3

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.
– 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.)
– 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.

٨

If there is any flaw or damage on the tank cap, replace

it.

٨

The tank cap is consumable, and therefore should be

renewed every two to three years.

17

Fuel upper limit

Fuel tank cap

Fuel tank

r

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.

WARNING: Failure to maintain

POINTS IN OPERATION AND HOW TO STOP

Observe the applicable accident prevention regulations!

complete control of the
machine at all could result
in serious bodily injury or
DEATH.

Hange

(1)

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

1) Set this machine on a flat space.

For machine with U Handle or J Handle

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.

18

Throttle lever

Low
speed

High
speed

I-O switch (1)

OPERATION

CLOSE

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.)
If the primer pump is pushed excessively, an excess of
gasoline returns to the fuel tank.

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.

Carburettor

Primer Pump

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.
3䋩 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.

19

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.

2) Be aware that the cutting head may not stop immediately

and allow it to slow down fully.

STOP

Throttle lever (6)

I-O switch (1)

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

– 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.

– 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

– 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

be resharpened by an authorized facility.
Manual resharpening will result in imbalances
of the cutting tool causing vibrations and
damage to the equipment.

blade, eddy blade) it may be turned over once, until
both cutting edges have become blunt.

Adjusting screw

Carburetor

20

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

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

In replacement, perform the following procedure.

1) Confirm that the tank cap is tightened securely.

2) Detach the oil gauge.
Keep the oil gauge free from dust or dirt.

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.

automobile)

Fuel tank cap

Oil gauge

21

3) Place waste or paper near the oil refill port.

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.

Waste or paper

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

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.
– 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.

– 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.

– 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.

CAUTION: Never touch the spark plug connector while the

engine is running (danger of high voltage
electric shock).

SUPPLY OF GREASE TO GEAR CASE

– 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.)

Element (sponge)

Air cleaner cover

Pick this part and remove the
element (felt).

0.7mm-0.8mm
(0.028”-0.032”)

Plate

Breather Part

Element (felt)

Fixing bolt

Gear case

Grease hole

23

CLEANING OF FUEL FILTER

WARNING: INFLAMMABLES STRICTLY PROHIBITED

Interval of Cleaning and Inspection: Monthly (every 50
operating hours)

Fuel filter (1)

Hose clamp

Fuel pipe

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.

24

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

– 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.

clean place.

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

Fault location

Fault System Observation Cause

Engine not starting
or with difficulty

No ignition spark

Fuel supply Fuel tank filled

Compression

Mechanical fault Starter not engaging

Warm start
problems

Engine starts but
dies

Insufficient
performance

Ignition system Ignition spark O.K.

No compression
when pulled over

Fuel supply Tank filled Incorrect idling adjustment,

Several systems
may simultaneously
be affected

Tank filled ignition
spark existing

Engine idling poor Air filter contaminated, carburetor

Fault in fuel supply or compression
system, mechanical defect

STOP-switch operated, wiring fault
or short circuit, spark plug or
connector defective, ignition module
faulty

Incorrect choke position, carburetor
defective, fuel supply line bent or
blocked, fuel dirty.

Cylinder bottom gasket defective,
crankshaft seals damaged, cylinder
or piston rings defective or improper
sealing of spark plug

Broken starter spring, broken parts
inside of the engine

Carburetor contaminated, have it
cleaned

carburetor contaminated

Fuel tank vent defective, fuel supply
line interrupted, cable or
STOP-switch faulty

contaminated, muffler clogged,
exhaust duct in the cylinder clogged

26

Operating time

Item

Engine oil

Tightening
parts (bolt, nut)

Fuel tank

Throttle lever

Stop switch

Cutting blade

Low-speed
rotation

Air cleaner

Inspect/
clean

Replace

Inspect

Clean/
inspect

Drain fuel

Check
function

Check
function

Inspect

Inspect/
adjust

Clean

Before

operation

After

lubrication

Daily
(10h)

30h 50h 200h

Shutdown

/rest

Corres-

ponding P

٤ 16

*1

٤

21

٤ 24

٤ 

*3

٤

25

٤ 18

٤ 18

٤ ٤ 15

٤ 20

٤ 23

Ignition plug

Cooling air
duct

Fuel pipe

Gear-case
grease

Fuel filter

Clearance
between air
intake valve
and air

Inspect

Clean/
inspect

Inspect

Replace

Refill

Clean/
replace

Adjust

٤ 23

٤ 24

٤ 24

٤

٤

*2

٧

*2

٧



23

24

discharge valve

Oil tube

Engine
overhaul

Carburetor

Inspect

Drain fuel

٤

*2

٧

*2

٧



*3

*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.



25

27

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) Remedy

Failure to operate primer pump Push 7 to 10 times.

Low pulling speed of starter rope Pull strongly.

Lack of fuel Feed fuel.

Clogged fuel filter Clean

Broken fuel tube Straighten fuel tube

Engine does not start

Engine stops soon
Engine speed does
not increase

Deteriorated fuel

Excessive suction of fuel

Detached plug cap Attach securely

Contaminated spark plug Clean

Abnormal clearance of spark plug Adjust clearance

Other abnormality of spark plug Replace

Abnormal carburetor Make request for inspection and

Starter rope cannot be pulled Make request for inspection and

Abnormal drive system Make request for inspection and

Insufficient warm-up Perform warm-up operation

Choke lever is set to “CLOSE”
although engine is warmed up

Clogged fuel filter Clean

Contaminated or clogged air
cleaner

Abnormal carburetor Make request for inspection and

Abnormal drive system Make request for inspection and

Deteriorated fuel makes starting more
difficult. Replace with new one.
(Recommended replacement: 1 month)

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.

maintenance.

maintenance

maintenance

Set to “OPEN”

Clean

maintenance

maintenance

28

y

y

State of abnormality Probable cause (malfunction) Remedy

Cutter blade does not
rotate

Stop engine
immediatel

Main unit vibrates
abnormally.

Stop engine
immediately

Cutter blade does not
stop immediately.

Stop engine
immediatel

Engine does not stop.

Run engine at idling,
and set choke lever

LE.

When the engine does not start after warm-up operation:

Loosened cutter blade-tightening
nut

Twigs caught by cutter blade or
dispersion-preventing cover

Abnormal drive system Make request for inspection and

Broken, bent or worn cutter blade Replace cutter blade

Loosened cutter blade-tightening
nut

Shifted convex part of cutter blade
and cutter blade support fitting

Abnormal drive system Make request for inspection and

High idling rotation Adjust

Detached throttle wire Attach securely

Abnormal drive system Make request for inspection and

Detached connector Attach securely

Abnormal electric system Make request for inspection and

Tighten securely

Remove foreign matter

maintenance.

Tighten securely

Attach securely

maintenance

maintenance

maintenance.

If there is no abnormality found for the check items, open the throttle by about 1/3 and start the engine.

29

MEMO

MEMO

Makita Corporation

Anjo, Aichi, Japan

885002-5

www.makita.com