2004 Kawasaki KVF750 4x4, Service Manual., Page 491Get this manual
18-2 APPENDIX Troubleshooting Guide
Spark plug cap not in good contact Spark plug incorrect Crankshaft sensor trouble Igniter trouble Ignition coil trouble Battery voltage low Ignition or engine stop switch shorted Wiring shorted or open Fuse blown Compression Low: Spark plug loose Cylinder head not sufficiently tightened down No valve clearance Cylinder, piston worn Piston ring bad (worn, weak, broken, or sticking) Piston ringgroove 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.C.R sticks open (Engine stalls when moving off) Poor Running at Low Speed: Spark weak: Spark plug dirty, broken, or maladjusted Spark plug cap or spark plug lead trouble Spark plug cap shorted or not in good contact Spark plug incorrect Igniter trouble Crankshaft sensor trouble Ignition coil trouble Battery voltage low Fuelair mixture incorrect: Pilot screw andor idle adjusting screw maladjusted Pilot jet or air passage clogged Starter plunger stuck open Air cleaner clogged, poorly sealed, or missing Fuel level too high or too low Fuel tank air vent obstructed Carburetor holder loose Air cleaner duct loose Compression low: Spark plug loose Cylinder head not sufficiently tightened down No valve clearance Cylinder, piston worn Piston ring bad (worn, weak, broken, or sticking) Piston ringgroove clearance excessive