7. Check that the spark plug washer is in good condition, and thread the spark plug in
by
hand to prevent cross-threading.
8. After !he spark plug is seated, tighten with a spark plug wrench to compress the washer.
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installing a new spark plug, tighten 1/2 turn after the spark plug seats to compress the washer. If reinstalling a used spark plug, tighten
1 /8-1 /4 turn after the spark plug seats to compress the washer.
NOTICE
I
The spark plug must be securely tightenecL An impmperly tightened spark plug can become very hot and could damage
the engine.
Never use spark plugs which have an improper heat range. Use only the recommended-spark plugs or equivalent
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