2013 Kawasaki KX450F Owners Manual - Page 158
2013 Kawasaki KX450F Manual
Page 158 highlights
156 TROUBLESHOOTING GUIDE TROUBLESHOOTING GUIDE NOTE żThis troubleshooting guide is not exhaustive and j does not give every possible cause for each problem listed. It is meant simply as a quick guide to assist you in troubleshooting for some of the more common difficulties. Starting failure or difficulties - Engine does not turn over: Valve seized Valve lifter seized Cylinder or piston seized Crankshaft seized Connecting rod small end seized Connecting rod big end seized Camshaft seized Transmission gear or bearing seized Kick shaft return spring broken Kick ratchet gear not engaging Improper installation of vehicle-down sensor Fuel does not flow: No fuel in tank Fuel tank cap air vent obstructed Fuel line clogged Break down of a fuel pump Break down of a fuel injector Spark missing or weak: Spark plug dirty, broken, or gap improperly adjusted Spark plug cap or high-tension wiring defective Spark plug cap not contacting properly Spark plug type incorrect Crankshaft sensor defective ECU defective Ignition coil defective Engine stop button wiring defective Flywheel magneto damaged Wiring shorted or interrupted • Fuel/air mixture incorrect: Air cleaner element clogged, poorly sealed, or not installed Compression low: Spark plug loose Cylinder head insufficiently tightened Cylinder bolt loose Cylinder or piston worn No valve clearance Crankshaft oil seal leak Valve spring broken or weak Valve not seating properly (valve bent, worn, or carbon accumulation on the seating surface) Piston ring worn, weak, broken, or sticking Piston ring side clearance excessive Cylinder head gasket damaged