2003-2005 Kawasaki Ultra-150 Jet Ski Factory Service Manual., Page 283Get this manual
APPENDIX 16-17 Troubleshooting
Flame rrester 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 il pump hoses Cooling water line leaking or clogged
Heavy Fuel Consumption