Makita BHX2500 Owners Manual - Page 18
Troubleshooting - repair
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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 Engine does not stop. Run engine at idling, and set choke lever to CLOSE. 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 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 Detached throttle wire Abnormal drive system Detached connector Abnormal electric system 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 "CLOSE" Clean Clean Make request for inspection and maintenance Make request for inspection and maintenance Attach securely Make request for inspection and maintenance 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. 18