2004-2005 Kawasaki STX-15F Jet Ski Factory Service Manual., Page 206Get this manual

2004-2005 Kawasaki STX-15F Jet Ski Factory Service Manual., Page 206

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ENGINE TOP END 6-35 Cylinder, Pistons
When using new rings in used piston, check for uneven groove wearThe rings should fit perfectly parallel to the groove sidesIf not, replace the piston