KYMCO Downtown 200i Service Manual page 74

7. CYLINDER/PISTON
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: 0.09 mm replace if over
2nd: 0.09 mm 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 hole I.D. of piston pin
Service Limit: 17.06 mm replace if over
DOWNTOWN 200i
7-4