2007-2010 Kawasaki Ultra 250X/260X/260LX PWC Factory Service Manual, Page 530Get this manual
16-78 APPENDIX Troubleshooting Guide
Cylinder head warped Valve spring broken or weak Valve not seating properly (valve bent, wornor carbon accumulation on the seating surface Knocking Carbon built up in combustion chamber Fuel poor quality or incorrect Spark plug incorrect IC igniter in ECU trouble Camshaft position sensor trouble Crankshaft sensor trouble Ignition coil trouble Inlet air temperature sensor trouble Miscellaneous Throttle valve won't fully open Engine overheating Engine oil level too high Engine oil viscosity too high Air suction valve trouble Camshaft cam worn
Overheating
Firing incorrect Spark plug dirty, brokenor maladjusted Spark plug incorrect IC igniter in ECU trouble Fuelair mixture incorrect Inlet air duct loose Air filter poorly sealed Air filter O-ring damaged Compression high Carbon built up in combustion chamber Engine load faulty Engine oil level too high Engine oil viscosity too high Lubrication inadequate Engine oil level too low Engine oil poor quality or incorrect Oil cooler incorrect Oil cooler clogged Sensor incorrect Water temperature sensor broken