Linhai 2004 ATV 260, Service Manual

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CHAPTER 3B ENGINE 50cc/80cc
ATV SERVICE MANUAL09.0
CHAPTER 3B ENGINE PAGE 3B - 22 -
Attention:
·
Don’t scratch the piston and break the piston ring.
·
When replacing the ring, keep the surface with a
mark facing upwards.
·
After assembling make sure that the ring can be
turned freely in the ring groove.
Lubricate
the rings with engine oil before installing
them on piston.
Make sure to offset ring end gaps at 120
℃
.
Lubricate the piston and rings liberally with
engine oil
Install the chain guide lever of the cam
Attention:
Make sure that the guide lever enters the notch of
the cylinder.
3.3.4 Assembling the piston
Scrape away the gasket adhering on the surface of
the crankcase
Attention:
Be sure not to let any matter drop into the
crankcase.
Assemble the piston, and piston pin
Attention:
·
When assembling, keep the mark “in” (on the top
of piston) towards the inlet valve
· Be sure not to let the piston pin circlip fail into the
crankcase.
Use a cloth to keep debris out of the crankcase..