Honda GXI 20 Owner's Manual page 29

4. ,Check that the spark plug washer is in good condition and thread the
5. ;After the spark plug is seated, tighten
with a spark plug wrench to com-
!spark plug in by hand t o prevent cross-threading.
;press the washer.
NOTE: When installing a n e w spark
plug, tighten
1/2 turn after the spark
plug seats t o compress the washer. When reinstalling a used spark plug,
tighten
1/8- 1/4
turn after the spark plug seats to compress the washer.
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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