©. Visually inspect the spark plug.
Discard
们
f
the insulator is cracked or chipped.
Clean the spark plug with a wire brush if
it
is to
be
reused.
@. measure the plug gap with a feels r
gauge
correct as necessary by carefully banding side electrode
The gap should
be:
0.70-0.60 mm {0.026-0.031
in)
®· Check that the spark plug washeris
in
good condition, and
th
「
ead
the spark plug
in
by hand lo prevent cross-threading.
(J). After the spark plug is seated. Tighten with a spark plug wrench to compress
the Washer.
If installing a new spark plug, tighten 1 / 2turn after the spark plug Seats to compress
the washer. If reinstalling a used spark plug, tighten 1/ 8 -1/4 turn after the spark plug
seas to Compress the washer.
~
The
spark
plug
must
be
securely
tightened.
An
Improperly
tightened
spark
plug
can
become
very
hot
and
could
damage the engine.
Never use
spark
plugs
which
have an
improper
heat range, use
only
the
recommended
spark
plugs
or
equivalent.
21
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