Troubleshooting - Makita EM4350RH Original Instruction Manual

TROUBLESHOOTING

Before making a request for repairs, check for trouble by 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
Engine does not start.
Engine stops soon.
Engine speed does not increase.
Metal blade does not rotate.
Stop engine immediately.
Main unit vibrates abnormally.
Stop engine immediately.
Metal blade does not stop immediately.
Stop engine immediately.
Engine does not stop.
Run engine at idling, and set choke lever
to "CLOSE".
Probable cause (malfunction)
I-O switch is set to STOP.
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.
Starter rope cannot be pulled.
Abnormal drive system.
Insufficient warm-up.
Choke lever is set to "CLOSE" although
engine is warmed up.
Clogged fuel filter.
Contaminated or clogged air cleaner.
Abnormal carburetor.
Abnormal drive system.
Loosened metal blade-tightening nut.
Twigs caught by metal blade or dispersion-
preventing cover.
Abnormal drive system.
Broken, bent or worn metal blade.
Loosened metal blade-tightening nut.
Shifted convex part of metal blade and metal
blade support fitting.
Abnormal drive system.
High idling rotation.
Detached throttle wire.
Abnormal drive system.
Detached connector.
Abnormal electric system.
29
Remedy
Set the I-O switch to OPERATION.
Push 7 to 10 times.
Pull strongly.
Feed fuel.
Clean.
Straighten fuel tube.
Deteriorated fuel makes starting more difficult.
Replace with new fuel. (Recommended
replacement: 1 month)
Set throttle lever from medium speed to high
speed, and pull starter handle until engine
starts. Once engine starts, cutting tool
starts rotating. Pay full attention to cutting
tool.
If engine will not start still, remove spark plug,
dry the electrode, and reassemble them as
they originally are. Then, start as specified.
Attach securely.
Clean.
Adjust clearance.
Replace.
Make request for inspection and maintenance.
Make request for inspection and maintenance.
Make request for inspection and maintenance.
Perform warm-up operation.
Set to "OPEN".
Clean.
Clean.
Make request for inspection and maintenance.
Make request for inspection and maintenance.
Tighten securely.
Remove foreign matter.
Make request for inspection and maintenance.
Replace metal blade.
Tighten securely.
Attach securely.
Make request for inspection and maintenance.
Adjust.
Attach securely.
Make request for inspection and maintenance.
Attach securely.
Make request for inspection and maintenance.