2004 Kawasaki KVF750 4x4, Service Manual., Page 155Get this manual
5-42 ENGINE TOP END Cylinder and Piston
Piston Ring, Piston Ring Groove Wear
Check for uneven groove wear by inspecting the ring seating
The rings should fit perfectly parallel to groove surfacesIf not, replace the piston and all the piston ringsWith the piston rings in their grooves, make several measurements with thickness gauge [A] to determine piston ringgroove clearancePiston RingGroove Clearance Standard: Top Second Service Limit: Top Second 0.18 mm (0.0071 in 0.17 mm (0.0067 in 0.04 0.08 mm (0.0016 0.0032 in 0.03 0.07 mm (0.0012 0.0028 in
If the piston ring groove clearance is greater than the service limit, measure the ring thickness and groove width as follows to decide whether to replace the rings, the piston or both
Piston Ring Groove Width
groove width Measure the piston ringseveral points around the pistonUse vernier caliper at