KYMCO VITALITY 50 Manual page 121

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7. CYLINDER HEAD (2-STROKE)/
CYLINDER/PISTO
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: Top: 0.5mm replace if over
2nd: 0.65mm replace if
over
Oil ring: 0.9mm replace if over
Measure the piston pin hole I.D.
Service Limit: 13.04mm replace if over
Measure the piston pin O.D.
Service Limit: 12.96mm replace if below
7-15
N
20mm
VITALITY 50

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