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- Before
operation
After fuelling Daily (10h) 50h 200h 600h or 2 years
whichever
earlier
Before storage
Oil tube Inspect - - - -
(Note2)
- -
Valve clearance
(intake valve
and exhaust
valve)
Inspect / adjust - - - -
(Note2)
- -
Mufer Inspect / clean - - - -
(Note2)
- -
Combustion
chamber / valve
/ port
Inspect / clean - - - -
(Note2)
- -
Engine Overhaul - - - - -
(Note2)
-
Carburetor Drain fuel - - - - - -
(Note3)
Note1: Perform initial replacement after 20h operation.
Note2: For inspection, request Authorized Service Agent or a machine shop.
Note3: After emptying the fuel tank, continue to run the engine and drain fuel in the carburetor.
TROUBLE SHOOTING
Before asking for repairs, conduct your own inspection rst. If you nd a problem that is not explained in the manual, do not attempt to dismantle the
tool. Instead, ask Makita Authorized Service Centers, always using Makita replacement parts for repairs.
State of abnormality Probable cause (malfunction) Remedy
Engine does not start. 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 lter. Clean the fuel lter.
Bent fuel tube. Straighten the fuel tube.
Deteriorated fuel. Deteriorated fuel makes starting more difcult. 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. If engine will not start still,
remove spark plug, make electrode dry, and reassemble them as
they originally are. Then, start as specied.
Detached plug cap. Attach securely.
Contaminated spark plug. Clean the spark plug.
Abnormal clearance of spark plug. Adjust clearance.
Other abnormality of spark plug. Replace the spark plug.
Abnormal carburetor. Ask our authorized service center to inspect and repair it.
Cannot pull the starter knob. Ask our authorized service center to inspect and repair it.
Engine internal parts problem. Ask our authorized service center to inspect and repair it.
Engine stops soon.
Engine speed does not increase.
Insufcient warm-up. Perform warm-up operation.
Choke lever is set to “CLOSE” although engine is
warmed up.
Set to “OPEN”.
Clogged fuel lter. Clean the fuel lter.
Contaminated or clogged air cleaner. Clean the air lter.
Detached control cable. Attach the control cable securely.
Engine internal parts problem. Ask our authorized service center to inspect and repair it.
Throttle does not return to idling speed. Inproper throttle valve position. Reposition the control cable.
Adjust the throttle valve position by turning the cable adjusting
bolt.
Engine does not stop.
Run engine at idling, and set choke lever
to “CLOSE”.
Detached connector. Attach the connector securely.
Abnormal electric system. Ask our authorized service center to inspect and repair it.
17 ENGLISH
17


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