1999 Polaris PWC Genesis, Ficht, X-45 Service Manual, Page 137Get this manual

1999 Polaris PWC Genesis, Ficht, X-45 Service Manual, Page 137

ENGINE DisassemblyInspectionPolaris Engines Piston InspectionMeasurement 1Check piston for scoring or cracks in piston crown
(.165.191mm) Service limit: .011" (.279 mm) 4Position each piston ring 12" (1.3 cm) from the top of the cylinder using the
piston to push it squarely into placeMeasure installed gap with feeler gauge at both the top and bottom of the cylinderNOTE:
difference in end gap indicates cylinder taperThe cylinder should be measured for excessive taper and out of roundReplace
rings if the installed end gap exceeds the service limitNOTE: Always check piston ring installed gap after reboring cylinder
or when installing new rings Piston Ring Installed Gap STD: .012"-.020" (.30.51mm) Service limit: .028" (.71 mm) Cylinder
CleaningCylinder Reconditioning Refer 10 page 4.42 for cylinder cleaning, honing, and reboring information Polaris Sales