quannon 125 Workshop-manual : Page 71

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          7. CYLINDER/PISTON                                  QUANNON 125


 Inspect the piston, piston pin and piston rings.
 Remove the piston rings.
 · Take care not to damage or break the
     piston rings during removal.

 Clean carbon deposits from the piston ring
 grooves.




 Install the piston rings onto the piston and
 measure the piston ring-to-groove clearance.
 Service Limits:
           Top: 0.09mm replace if over
           2nd: 0.09mm 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




 Measure the piston pin hole I.D.
 Service Limit: 15.06mm replace if below




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