KYMCO VITALITY 50 Manual page 116

7. CYLINDER HEAD (2-STROKE)/
CYLINDER/PISTON
The cylinder has a "A" mark or no mark
on it. When replacing the cylinder with a
new one, use a cylinder having the same
mark as the old one.
Measure the piston O.D. at a point 5mm
from the bottom of the piston skirt.
Service Limit: 38.90mm replace if below
Measure the piston-to-cylinder clearance.
Service Limit: 0.10mm replace if over
Measure the piston pin hole I.D.
Service Limit: 12.03mm replace if over
Measure the piston pin O.D.
Service Limit: 11.98mm replace if below
Measure the piston-to-piston pin clearance.
Service Limit: 0.03mm replace if over
VITALITY 50
A Mark
7-10