2003-2005 Kawasaki Ultra-150 Jet Ski Factory Service Manual., Page 281Get this manual
APPENDIX 16-15 Troubleshooting
Inside Carburetor
Fuel feed line leaking or clogged Pulse line leaking or clogged Vent line clogged Faulty fuel pump Water in carburetor Carburetor diaphragm damaged Float arm not adjusted
Electrical System
Faulty or fouled spark plug Poor wiring connection Faulty magneto
Engine misfires, does not run smoothly Fuel System to Fault in arburetor