2004-2005 Kawasaki STX-15F Jet Ski Factory Service Manual., Page 234Get this manual
8-22 ENGINE BOTTOM END Crankshaft and onnecting Rods
Connecting Rod Twist
he en Onassuurfracehpladteff,esretntce bnigt-he dhariborts[Ao]fotnhe blrobcokr [C] Mbeove te et seurfai ce eplate iover 1e0ghmm (3.94 ain d[iBa tance-on the arbor to determine the amount of connecting rod twist with the connecting rod held horizontally, and using height gaugeIf connecting rod twist exceeds the service limit, the connecting rod must be replacedConnecting Rod Twist it.2 13 .9 in )
Connecting Rod Big End Side Clearance
ther crank web to determine clearance
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If the clearance exceeds the service limit, replace the connecting rod with new one and then check clearance re placement, the crankshaft also must be replaced