3.6 Adjusting valve clearance
Attention
Valve adjustment should only be performed on a cool engine.
(1) Remove back case, then take off valve cover.
(2) Pull the starter rope gently and set the piston in top dead
center (Use a stick in the spark plug hole measure the depth).
(3) Insert a feeler gauge into the gap between rocker and valve to
measure the valve clearance.
Valve Clearance
Intake:
0.1mm(0.004 in)
Exhaust:.
0.1mm (0.004in)
(4) If adjustment is necessary, proceed as follows:
a. Hold rocker axis using the wrench and loosen the lock nut.
b. Loosen the lock nut of rocker axis to gain the specified intake
and exhaust valve clearance.
c. Hold rocker axis using a wrench and tighten the lock nut.
d. Check the clearance of valve after adjustment.
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