SECTION 3. MAINTENANCE
5）Install the spark plug
If installing a new spark plug, tighten l/2 turn after
the spark plug has firmly pressed on the washer. If
reinstalling a used spark plug, tighten l/8 - l/4 turn
after the spark plug has firmly pressed on the
washer.
6）Install the spark plug cap and spark plug cover
Spark Plug Torque: 25~.30 N*m
The spark plug must be securely
tightened. An improperly tightened spark plug
could damage the engine.
Never use spark plugs which have an
improper heat range. Use only the recommended
spark plugs or equivalent.
3-7 Valve Clearance
Valve clearance inspection and
adjustment must be performed with the engine
cold.
1) Remove the cylinder head cover, and pull the
starter grip (until a resistance is clearly felt) to
set the piston at top dead center of the
compression stroke (both valves fully closed).
2) Insert a feeler gauge between the rocker arm
and valve to measure valve clearance.
3) If adjustment is necessary, proceed as follows:
a) Use a clamp to hold the rocker arm pivot
and use a wrench to loosen the pivot lock
nut.
b) Turn the rocker arm pivot to obtain the
specified valve clearance.
c) Retighten the lock nut while using a clamp
to hold the rocker arm pivot.
d) Recheck valve clearance after tightening
the lock nut.
Standard
valve
clearance
IN. 0.10~0.15 mm
EX. 0.10~0.15 mm
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