2005-2009 Kawasaki Brute Force 650/KVF 650 4x4 Service Manual, Page 149Get this manual
ENGINE TOP END 5-41 Cylinder and Piston
Piston Ring Groove Width
Measure the piston ring groove widthOUse vernier caliper at several points around the pistonPiston Ring Groove Width Standard: Top Second Service Limit: Top Second 1.13 mm (0.0445 in 1.12 mm (0.0441 in 1.0301.050 mm (0.04060.0413 in 1.0201.040 mm (0.04020.0409 in
If the width of any of the two grooves is wider than the
service limit at any point, replace the piston
Piston Ring Thickness
Measure the piston ring thicknessOUse micrometer to measure at several points around the ring Piston Ring Thickness Standard: Top Second Service Limit: Top Second 0.90 mm (0.035 in 0.90 mm (0.035 in 0.970.99 mm (0.03820.0390 in 0.970.99 mm (0.03820.0390 in
If any of the measurements is less than the service limit
on either of the rings, replace all the rings