g206628
Figure 49
Installing the Spark Plug
Important:
Ensure that the gap between the side
and center electrodes is correct before installing
the spark plug.
1.
Thread the spark plug clockwise into the
spark-plug hole by hand.
Note:
Avoid cross-threading the spark plug with
the threads of the spark-plug hole.
2.
Rotate the spark plug clockwise using a 21 mm
(13/16 inch) spark-plug wrench until the plug
and sealing washer are seated (
).
3.
Tighten the spark plug as follows:
•
When installing an
in-service
spark plug,
tighten the plug an additional 1/8 to 1/4 turn.
•
When installing a
new
spark plug, tighten the
plug an additional 1/2 turn.
Important:
A loose spark plug may cause
the cylinder to overheat. An over-tight spark
plug may damage the threads in the cylinder
head.
4.
Push the spark-plug wire onto the terminal of the
spark plug (
).
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