25
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
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 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, cutting disc starts
rotating. Pay full attention to cutting disc.
If engine will not start still, remove spark plug,
make electrode dry, and reassemble them as
they originally are. Then, start as specified.
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 maintenance.
Starter rope cannot be pulled
Make request for inspection and maintenance.
Abnormal drive system
Make request for inspection and maintenance.
Contaminated clutch and around parts
Clean
Engine stops soon
Engine speed does not increase
Insufficient warm-up
Perform warm-up operation
Choke lever is set to “ ” although engine is
warmed up.
Set to “ON ”
Clogged fuel filter
Clean
Contaminated or clogged air cleaner
Clean
Abnormal carburetor
Make request for inspection and maintenance.
Abnormal drive system
Make request for inspection and maintenance.
Cutting disc does not rotate
Stop engine immediately
Loosened cutting disc-tightening bolt
Tighten securely
Abnormal drive system
Make request for inspection and maintenance.
Main unit vibrates abnormally
Stop engine immediately
Broken, bent or worn cutting disc
Replace cutter blade
Loosened cutting disc-tightening bolt
Tighten securely
Abnormal drive system
Make request for inspection and maintenance.
Cutting disc does not stop immediately
Stop engine immediately
High idling rotation
Adjust
Detached throttle linkage
Make request for inspection and maintenance.
Abnormal drive system
Make request for inspection and maintenance.
Engine does not stop
Run engine at idling, and set choke lever
to “ ”
Detached connector
Attach securely
Abnormal electric system
Make request for inspection and maintenance.
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.
