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Spark Plugs u Changing Spark Plug
54
Maintenance
5.
Check the spark plug gap using a wire-
type feeler gauge.
u If adjustment is necessary, bend the
side electrode carefully.
6.
Make sure the plug washer is in good
condition.
7.
With the plug washer attached, thread
the spark plug in by hand to prevent
cross-threading.
8.
Tighten each spark plug:
● If the old plug is good:
1/8 turn after it seats
● If installing a new plug, tighten it twice
to prevent loosing:
a) First, tighten the plug:
NGK: 1 turn after it seats.
DENSO: 3/4 turn after it seats.
b) Then loosen the plug.
c) Next, tighten the plug again:
1/8 turn after it seats.
9.
Reinstall the spark plug caps. Take care
avoid pinching any cables or wires.
The gap should be:
0.024 to 0.028 in (0.60 to 0.70 mm)
Spark plug
gap
Side
electrode
NOTICE
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.
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