2005 Kawasaki STx-12F Jet Ski Factory Service Manual., Page 18Get this manual
1-12 GENERAL INFORMATION General pecifications
Items Overall idth Overall Height Dry Weight Fuel Tank Capacity Engine Oil Type JT1200-D1 180 mm (46.5 in 050 mm (41.3 in 334 kg (736 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)