2005 Kawasaki STx-12F Jet Ski Factory Service Manual., Page 225Get this manual
8-16 ENGINE BOTTOM END Crankcase Splitting
Crankcase Assembly CA UTION
The upper and lower crankcase halves are machined at the factory in the assembled state, so the crankcase halves must be replaced as setih nt Wcteshoighh-elacsrh npkociasessohvalne,scaleanwoipfethey.mating surfa ft nd dr ng ss Ursinkccompraelvee.d air, blow out the oil passages in the ca ase al InCrtanl:kshaft [A] and Connecting Rods (see Crankshaft Installation) Camshaft Chain [B] Oil Pump Sprocket Chain [C] Dowel Pins [D] Oil Passage Pipe [E] with O-ring Oil Seal [F]
ri Belfoowenfgt.ting the lower case on the upper case, check the fol i