Honda XL200 Owner's Manual page 122

Owner´s Manual
1. Disconnect the spark plug cap.
2. Clean any dirt from around the spark plug base.
Remove the spark plug with the spark plug wrench
furnished in the tool kit.
3. Inspect the electrodes and center porcelain for
deposits, erosion or carbon fouling. If the erosion or
deposit is heavy, replace the plug. Clean a carbon
or wet fouled plug with a plug cleaner, otherwise use
a wire brush.
4. Check the spark plug gap (1) using a wire-type
feeler gauge. If adjustment is necessary, bend the
side electrode (2) carefully.
The gap should be:
0.8 – 0.9 mm (0.03 – 0.04 in)
(2)
(1)
(1) Spark plug gap
(2) Side electrode
5. Make sure the plug washer is in good condition.
6. With the plug washer attached, thread the spark
plug in by hand to prevent cross-threading.
7. Tighten a new spark plug 1/2 turn with a spark plug
wrench to compress the washer. If you are reusing a
plug, it should only take 1/8 – 1/4 turn after the plug
seats.
NOTICE
The spark plug must be securely tightened. An
improperly tightened plug can become very hot and
possibly damage the engine.
8. Reinstall the spark plug cap.
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