Generic Race 50, Service Manual

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13.4 Piston
13.4.1 Disassembly
Disassemble the retaining ring for piston pin.
*Attention: When disassembling
，
do not drop the retaining
ring into the crankcase.
Withdraw the piston pin and unload the piston.
Inspect the piston, piston pin and piston ring.
Unload the piston ring.
*Attention: Do not break or damage the piston ring.
Clean away the carbon deposit in the piston ring groove.
Unload the piston ring and install each piston
ring at the bottom of the cylinder.
*Attention: Press the piston ring into the air cylinder with
the piston crown.
活塞
Piston pin, retaining ring
Testing gauge
Piston ring
Piston