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Spark Plug
Servicing Your Honda
Improperly tightened spark plugs can
damage the engine. If a plug is too loose,
a piston may be damaged. If a plug is too
tight, the threads may be damaged.
Tighten the spark plug:
First, tighten the plug:
NGK: turn after it seats.
DENSO: turn after it seats.
Then loosen the plug.
Next, tighten the plug again:
1/8 turn after it seats.
Reinstall the spark plug cap. Take care
to avoid pinching any cables or wires.
Reinstall the maintenance lid.
If installing a new plug, tighten it twice
to prevent loosening:
8.
9.
10.
1/2
3/4
a)
b)
c)
04/10/19 10:53:21 31KSZ610_127