4. Remove the spark plug using the spark
plug wrench provided in the tool kit.
5. Inspect the electrodes and center
porcelain for deposits, erosion or
carbon fouling. If the erosion or
deposit is heavy, replace the plug. Clean
carbon or wet fouled plug with a plug
cleaner.
6. Check the spark plug gap using a wire-
type feeler gauge. If adjustment is
necessary, bend the side electrode (2)
carefully.
0.8 - 0.9 mm
2
(2) Side Electrode
61
8. Tighten a new spark plug 1/2 turn
w i t h a s p a r k p l u g w r e n c h t o
compress the washer. If you are
reusing a plug, it should only take
1/8 - 1/4 turn after the plug seats.
7. With the plug washer attached,
thread the spark plug in by hand to
prevent cross-threading.
The spark plug must be securely
tightened. An improperly tightened plug
can become very hot and possibly
damage the engine.
9. Reinstall the noise suppressor cap.
1. Warm up the engine, and place the
scooter on its main stand.
2. Lift up the body cover (page 32) and
adjust idle speed by adjusting the
throttle stop screw (1) by inserting a
suitable screw driver.
Refer to the Safety Precautions (page 51).
The engine must be at normal operating
temperature for accurate idle speed
adjustment. Ten minutes of stop-and-go
riding is sufficient.
IDLE SPEED
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