1995-2004 Kawasaki JetSki 750ZXi 900ZXi Factory Service Manual, Page 110Get this manual
Crankshaft Maintenance The crankshaft changes the reciproc:ating, motor of the piston into rotating motion to drive the [et pump, Crankshafttrouble, sueh as excessive play or runout, win the stress caused by' the intermittent force on the piston and WtU result in not only rapid crankshaft bearing wear, but also noise, power loss, vibration, and shortened life, Adefect:i'Ve crankshaft should alwavs be detected at an earlv stage' and repaired immediatelv, The foUowiing explanation concerns the most common crankshaft problems and the method for rneasurinq play, runout, andean-rod aHgnment, it does not cover crankshaft disassembly because of the
highl11y specialized equipment that isrequired If crankshaft components, become damaged or worn, the entire shaft should be replaced as an assembly, or rebuilt by properly equipped shop
ConnectinqRod Bend! Twist
o Set the crankshaft in an a'li'ig.nment jig or in blocks on su rface plateoSelectanerbor of the' same diameter as the connecti,ng rod srnalt end and at least 100 mm insert the arborth rough the connecting rod smallend, With the connecting'rod held verticany, use height ,gauge to measure