KAYO MOTOR AU200, Maintenance Manual, Page: 78 / 138

5
发动机
5- 22
5.5.9 Decomposition of cylinder
head
Press the valve spring with a valve remover
Remove the valve lock clip
Then relax the valve remover
Remove valve spring seat, valve spring and
valve
Note: In order to prevent permanent
deformation of the valve spring, the valve
spring cannot be compressed excessively,
only the valve lock clip can be removed.
All parts removed should be marked to
ensure that the original assembly position is
reached during assembly
5.5.10 Inspection of valves and
valve guides
Check if the valves are bent, and the burns
or valves are abnormally worn.
Check the movement of the valve in the
valve guide and measure its outer diameter
Maintenance limit:
Intake: 5.42mm
exhaust
：
5.40mm
And insert each valve into the valve guide
to observe its movement
Measure the inside diameter of each valve
guide with an internal micrometer or a
dedicated measuring tool. Finally calculate
the gap between the valve guide and the
valve guide
Maintenance limit clearance:
Intake: 0.12mm
exhaust
：
0.14mm