CHAPTER 3B ENGINE 50cc/80cc
ATV SERVICE MANUAL07.0
Torque:
Crankcase bolt
9 N.m 6.6ft.lbs
Bolt for the chain adjusting guide lever the cam
10N.m 7.4ft.lbs
Trouble Shooting
Abnormal noise from the engine
·The crankshaft bearing getting slack
·The crankshaft pin bearing getting loose
3.6.2 Dismantling the crankcase
Detach the bolt of the chain adjusting guide lever
of the cam and remove the lever.
Remove assembly
Bolt of the crankcase.
Dismantle the right and left crankcases.
Attention:
● Don't damage the gasket surface
● When separating the crankcases, don't use
screw driver to try them apart.
Remove the gasket and the locating pin.
Remove the crankshaft from the crankcase.
Take out the cam chain.
CHAPTER 3B ENGINE
PAGE 3B - 41 -