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Spark Plug u Checking Spark Plug
60
Maintenance
7.
Make sure the plug washer is in good
condition.
8.
With the plug washer attached, thread
the spark plug in by hand to prevent
cross-threading.
9.
Tighten the spark plug:
● If the old plug is good:
1/8 turn after it seats.
● If installing a new plug, tighten it twice
to prevent loosening:
10.
Reinstall the spark plug cap. Take care to
avoid pinching any cables or wires.
11.
Install the parts in the reverse order of
removal.
Side
electrode
Spark plug gap
a) First, tighten the plug:
NGK: 3/4 turn after it seats.
DENSO: 1/2 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 plug can damage the
engine. If a plug is too lose, a piston may be damaged. If
a plug is too tight, the threads may be damaged.
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