2004-2005 Kawasaki STX-15F Jet Ski Factory Service Manual., Page 18Get this manual
1-12 GENERAL INFORMATION General pecifications
Items Overall idth Overall eight Dry Weight Fuel Tank Capacity Engine Oil Type Viscosity Capacity Electrical Equipment Battery Maximum Generator Output JT1500-A1 A2 180 mm (46.5 in 050 mm (41.3 in 338 kg (745 lb) 62 (16.4 US gal) API SE, SF or SG API SH or SJ with JASO MA SAE 10W-40 5.0 (5.3 US qt) 12 18 Ah 16 14 V