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Piston
Removal
Remove piston pin retainer.
Attention: Please do not drop the retainer into
crankcase during removal.
Take out piston pin and remove piston.
Remove piston ring.
Inspect piston, piston pin and piston ring.
Attention:
Please do not break or hurt piston ring.
Remove deposited carbon inside the piston ring.
Install the piston ring.
Measure the clearance between piston ring and piston
ring groove.
Allowable limit: First ring: 0.12 mm
Second ring: 0.12 mm
Remove piston ring and install all the piston rings
onto bottom of cylinder.
Attention:
Compress piston rings into the cylinder with piston
head.
Measure the joint clearance between piston rings.
Allowable limit: First ring: 0.4 mm
Second ring: 0.5 mm
Testing
gauge
Push
Piston
Piston
ring
Testing
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