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8. Cylinder / Piston
Piston Removal / Inspection
8-5
Block the crankcase and camshaft chain hole
with a clean cloth in order to prevent the
piston pin clip falling into the crankcase
Cover the holes of crankcase and cam chain
with a piece of clean rag.
Remove the piston pin circlip and remove the
piston pin and piston.
Remove the piston rings
Note
z Piston rings are easy to break, please be
careful during operation
Check if the piston rings are damaged or its
grooves are worn. Clean the carbon deposit.
Measure the clearance between piston rings
and ring grooves.
Service limit：
Top groove: 0.13 mm
Second groove: 0.12 mm
Thickness gauge
Piston ring
Piston pin clip
Piston
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