KYMCO Mongoose 90

8. CYLINDER/PISTON
8-15
CYLINDER/PISTON INSPECTION
Check the cylinder and piston for wear or
damage.
Clean carbon deposits from the exhaust port
area.
Measure the cylinder bore at three levels of
A, B and C in both X and Y directions.
Avoid the port area. Take the maximum
figure measured to determine the cylinder
bore.
Service Limit: 39.05 mm (1.562 in)
Inspect the top of the cylinder for warpage.
Service Limit: 0.1 mm (0.004 in)
Middle
Botto
m
Top
Be careful not to damage the cylinde
r
inside wall.
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