7. CYLINDER/PISTON K-PIPE 50 Inspect the top of the cylinder for warpage. Service Limit: 0.05mm repair or replace if over Piston Clip PISTON REMOVAL Remove the piston pin clip. Press the piston pin out of the piston. Place a clean shop towel in the crankcase to keep the piston pin clip from falling into the crankcase. Piston Pin Install the piston rings onto the piston and measure the piston ring-to-groove clearance. Service Limits: Top: 0.12mm replace if over 2nd: 0.12mm replace if over Remove the piston rings and insert each piston ring into the cylinder bottom. Use the piston head to push each piston ring into the cylinder. Measure the piston ring end gap. Service Limit: 0.5mm replace if over 7-4