Makita BBX7600 Owners Manual - Page 19

Troubleshooting

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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 Engine does not start Engine stops soon Engine speed does not increase Probable cause (malfunction) Failure to operate primer pump Low pulling speed of starter rope Lack of fuel Clogged fuel filter Broken fuel tube Deteriorated fuel Excessive suction of fuel Remedy Push 7 to 10 times. Pull strongly. Feed fuel. Clean Straighten 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. 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 Insufficient warm-up Perform warm-up operation Choke lever is set to "CLOSE" although engine is warmed up Set to "OPEN" 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 Detached throttle wire Attach securely Engine does not stop. Run engine at idling, and set choke lever to CLOSE. Detached connector Abnormal electric system Attach securely 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. 19

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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
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.
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
Engine does not start
Abnormal drive system
Make request for inspection and maintenance
Insufficient warm-up
Perform warm-up operation
Choke lever is set to
“
CLOSE
”
although engine
is warmed up
Set to
“
OPEN
”
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
Detached throttle wire
Attach securely
Engine stops soon
Engine speed does not increase
Detached connector
Attach securely
Abnormal electric system
Make request for inspection and maintenance.
Engine does not stop.
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.
Run engine at idling, and set choke
lever to CLOSE.
19