6.Check that the spark plug washer is in good condition and thread the spark plug in by hand to prevent
7.After the spark plug is seated, tighten with a spark plug wrench to compress the washer.
When installing a new spark plug, tighten 1/2 turn after the spark plug seats to compress the washer. When reinstalling a used spark plug, tighten 1/8－1/4 turn after the spark plug seats to compress the washer.
8.Attach the spark plug cap.
9.Install the top cover, and tighten the 5 mm hex bolt securely.
The spark plug must be securely tightened. An improperly tightened spark plug can become very hot and may damage the engine.
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