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6.
Check the spark plug gap using a wire-
type feeler gauge.
u If adjustment is necessary, bend the
side electrode carefully.
The gap should be:
0.031 - 0.035 in (0.80 - 0.90 mm)
7.
Make sure the plug washer is in good
condition.
8.
Install the spark plug. 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:
a) First, tighten the plug:
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 loose, a piston may be
damaged. If a plug is too tight, the threads may
be damaged.
10.
Install the parts in the reverse order of
removal.
u When reinstalling the spark plug cap,
take care to avoid pinching any cables
or wires.
Spark Plug u Checking Spark Plug
Maintenance
71
Spark plug gap
Side
electrode
Plug washer
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