1987-2004 Kawasaki Mojave KSF250 Service Manual, Page 199Get this manual
APPENDIX 165 Fuelair mixture incorrect Lubrication inadequate
Main jet clogged or wrong size Jet needle or needle jet worn Air jet clogged Fuel level too high or too low Bleed hole of air bleed pipe clogged Air cleaner clogged, poorly sealed, or missing Air cleaner duct loose Starter plunger stuck open Water or foreign matter in fuel Carburetor holder loose Fuel tank air vent obstructed Fuel tap clogged Fuel line clogged
Compression low
Engine oil level too low Engine oil poor quality or incorrect
Coolant incorrect
Coolant level too low Coolant deteriorated
Cooling system component incorrect
Radiator clogged Thermostat trouble Radiator cap trouble Thermostatic fan switch trouble Fan motor broken Fan blade damaged Water pump not turning Water pump impeller damaged
Spark plug loose Cylinder head not sufficiently tightened down No valve clearance Cylinder, piston worn Piston rings bad (worn, weak, broken, or sticking) Piston ringland clearance excessive Cylinder head gasket damaged Cylinder head warped Valve spring broken or weak Valve not seating properly (valve bent, worn, or carbon accumulation on the seating surface Compression release cam (K.A.CR) sticks open (Engine stalls when moving off)