Trouble Shooting - Makita EB7660TH Instruction Manual

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Oil tube Inspect
Valve clearance Inspect / adjust
(intake valve
and exhaust
valve)
Muffler Inspect / clean
Combustion Inspect / clean
chamber / valve
/ port
Engine Overhaul
Carburetor Drain fuel
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 first. If you find 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
Engine does not start.
Engine stops soon.
Engine speed does not increase.
Throttle does not return to idling speed.
Engine does not stop.
Run engine at idling, and set choke lever
to "CLOSE".
Before After fuelling
operation
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Probable cause (malfunction)
Failure to operate primer pump.
Low pulling speed of starter rope.
Lack of fuel.
Clogged fuel filter.
Bent fuel tube.
Deteriorated fuel.
Excessive suction of fuel.
Detached plug cap.
Contaminated spark plug.
Abnormal clearance of spark plug.
Other abnormality of spark plug.
Abnormal carburetor.
Cannot pull the starter knob.
Engine internal parts problem.
Insufficient warm-up.
Choke lever is set to "CLOSE" although engine is
warmed up.
Clogged fuel filter.
Contaminated or clogged air cleaner.
Detached control cable.
Engine internal parts problem.
Inproper throttle valve position.
Detached connector.
Abnormal electric system.
Daily (10h) 50h
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Remedy
Push 7 to 10 times.
Pull strongly.
Feed fuel.
Clean the fuel filter.
Straighten the fuel tube.
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. If engine will not start still,
remove spark plug, make electrode dry, and reassemble them as
they originally are. Then, start as specified.
Attach securely.
Clean the spark plug.
Adjust clearance.
Replace the spark plug.
Ask our authorized service center to inspect and repair it.
Ask our authorized service center to inspect and repair it.
Ask our authorized service center to inspect and repair it.
Perform warm-up operation.
Set to "OPEN".
Clean the fuel filter.
Clean the air filter.
Attach the control cable securely.
Ask our authorized service center to inspect and repair it.
Reposition the control cable.
Adjust the throttle valve position by turning the cable adjusting
bolt.
Attach the connector securely.
Ask our authorized service center to inspect and repair it.
17 ENGLISH
200h 600h or 2 years Before storage
whichever
earlier
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(Note2)
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(Note2)
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(Note2)
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(Note2)
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(Note2)
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(Note3)