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23
The spark plug must be securely tightened. An improperly
tightened spark plug can become very hot and may damage the
engine.
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.
5.
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