2003-2005 Kawasaki JetSki Ultra-150 Factory Service Manual, Page 57Get this manual
3-6 FUEL SYSTEM Specifications
Item Carburetor Make, Type Size Main Jet: Front Middle Rear Pilot Jet: Front Middle Rear Pilot Screw Jet Needle Mark Inlet Valve System: Valve Seat Size Arm Spring Load Pop-Off Pressure Idle Speed: In Water Out Of Water Reed Valve Reed Warp Fuel Tank Capacity Standard Keihin, CDCV 40-35 35 mm (1.378 in Venturi #165 (#155-for high altitude) #165 (#155-for high altitude) #165 (#155-for high altitude) #48 (#45-for high altitude) #48 (#45-for high altitude) #48 (#45-for high altitude) 14 12 turn open N8DC 1.6 mm (0.063 in 0.18 (18 g) 108 kPa (1.10 kgfcm, 15.6 psi) 250 100 rmin (rpm) 800 100 rmin (rpm) 58 (15.3 US gal) including (1.85 US gal) reserve Service Limit