2003-2005 Kawasaki JetSki Ultra-150 Factory Service Manual, Page 292Get this manual
APPENDIX 16-17 Troubleshooting
Flame arrester clogged Muffler or exhaust system clogged Water or foreign matter in gasoline or engine oil Exhaust gas leak in engine compartment
Overheating
Ignition wrong Carburetor not adjusted Flame arrester or exhaust system clogged Carbon accumulation in combustion chamber Wrong type of gasoline or oil Obstruction in oil pump hoses Cooling water line leaking or clogged
Heavy Fuel Consumption