2012 Kawasaki KX250F Owners Manual - Page 170
2012 Kawasaki KX250F Manual
Page 170 highlights
168 TROUBLESHOOTING GUIDE Engine noise abnormal Knocking: Carbon built up in combustion chamber Fuel quality poor or type incorrect Spark plug type incorrect Engine overheating ECU defective chain, sprocket, chain guide worn • Camshaft Decompression spring broken • Flywheel magneto loose • Abnormal drive train noise Clutch noise: Clutch housing/friction plate clearance excessive Clutch housing gear excessive Metal chip jammed in clutch housing gear teeth Transmission noise: j Piston slap: Piston clearance excessive Cylinder or piston worn Connecting rod bent Piston pin or piston pin holes worn Valve noise: Valve clearance incorrect Valve spring broken or weak Camshaft bearing or cam face worn Valve lifter worn Other noise: Connecting rod small end clearance excessive Connecting rod big end clearance excessive Piston ring worn, broken or stuck Piston seized or damaged Cylinder head gasket leaking Exhaust pipe leaking at cylinder head Crankshaft runout excessive Engine mounts loose Crankshaft bearing worn Primary gear worn or chipped Camshaft chain tensioner defective • • • bearing worn or damaged • Crankcase Transmission gear worn or chipped • Metal chip jammed in gear teeth • Engine oil level or viscosity too low • Kick ratchet gear not properly disengaging from • kick gear • Kick shaft idle gear worn or chipped Drive chain noise: Drive chain slack improperly adjusted Drive chain worn Rear and/or engine sprocket(s) worn Drive chain inefficiently lubricated Rear wheel misaligned Frame noise abnormal Front fork noise: level or viscosity too low • Oil Spring broken or weak • Front fork air pressure high •