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Spark Plug u Checking Spark Plug
53
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.
Install the new spark plugs. 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:
9.
Reinstall the spark plug caps. Take care to
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
a) First, tighten the plug:
NGK: 1turn 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.
NOTICE
An 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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