1995-1997 Kawasaki 750ZXi-900ZXi Jet Ski Repair Manual., Page 84Get this manual
ENGINE TOP END 5-11
0Cylinder inside diameter must not vary more than 001 mm at any point Be wary of measurements taken immediately after boring since the heat affects cylinder diameter in the case of rebored cylinder and oversize piston, the service limit for the cylinder is the diameter that the cylinder was bored to plus 0.1 mm an the service limit for the piston is the oversize piston onginal diameter minus 15 mm If the exact figure for the rebored diameter IS unknown, it can be roughly determined by measuring the diameter at the base of the cylinder
Piston Ring, Piston Ring Groove Inspection
Visuall inspect the piston rings and the piston ring grooves the rings are worn unevenly or damaged, they must be replaced It the piston ring groove are worn unevenly or damaged, the piston must be replaced and fitted with new rings