CHAPTER 3B ENGINE 50cc/80cc ATV SERVICE MANUAL09.0
CHAPTER 3B ENGINE PAGE 3B - 9 -
Remove camshaft gear from camshaft
chain.
Remove camshaft.
Check camshaft
Check cam lift.
Use limit :IN: 25.681mm below change
EX:25.524mm below change
Check surface of cam lobes for weary
surface break down, scuffing or cracking.
Check camshaft and bearing for loose fit or
damage.
If any excessive wear or damage is found,
replace the camshaft.
Disassembly of camshaft seat and
rocker arm assembly
Take out camshaft rocker arm bearing by
using 5mm screw.
Take off camshaft rocker arm.