Linhai ARCHON 400 Service Manual page 32

CHAPTER 3 ENGINE
3.2 PARTS INSPECTION AND SERVICE
3.2.1VALVE CLEARANCE ADJUSTMENT
NOTE:
Valve clearance adjustment should be made
with the engine cool, at room temperature.
When the valve clearance is to be measured or
adjusted, the piston must be at Top Dead Center
(T.D.C.) on the compression.
1. Remove :
Crankcase cover
2. Remove :
Spark plug
Valve cover (intake side)
Valve cover (exhaust side)
3. Remove:
Timing check plug
4.Measure:
Valve clearance
Out of specification → Adjust.
Valve clearance (cold):
Intake valve 0.08- 0.12m m
Exhaust valve 0.13- 0.16mm
Measurement steps:
Rotate
the
counterclockwise to align the slit ○
with the stationary pointer
cover when the piston is Top Dead Center
(TDC).
Measure the valve clearance by using a feeler
gauge.
6. Adjust
Valve clearance
Adjustment steps:
Loosen the locknut 
Turn the adjuster ③ in or out with the valve
adjusting tool  until specified clearance is
obtained .
Turning in → Valve clearance is decreased
Turning out → Valve clearance is increased
Hold the adjuster to prevent it from moving
and tighten the locknut.
primary fixed
on the rotor
a
E
A
○
on the crankcase
b
E
A A
sheave
BUCK 450 SERVICE MANUAL 20.0
CHAPTER 3 ENGINE PAGE. 3- 7