KYMCO Mongoose 50-2T, Service Manual

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8
. CYLINDER/PISTON
8-7
INSPECTION
Inspect the piston, piston pin and piston
rings.
Remove the piston rings.
Clean carbon deposits from the piston ring
grooves.
Inspect the piston wall for
wear/scratches/damage.
If any defects are found, replace the piston
with a new one.
Install the piston rings onto the piston and
measure the piston ring-to-groove clearance.
Service Limits
:
Top
: 0.09 mm (0.0036 in)
2nd
: 0.09 mm (0.0036 in)
Remove the piston rings and insert each
piston ring into the cylinder bottom.
Measure the piston ring end gap.
Service Limit
: Top: 0.5 mm (0.02 in)
2nd: 0.65 mm (0.026 in)
Oil ring: 0.9 mm (0.036 in)
Measure the piston pin hole I.D.
Service Limit
: 13.04 mm (0.5216 in)
Take care not to damage or break the
piston rings during removal.
＊
Use the piston head to push each piston
ring into the cylinder.
＊