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9.
Install the back cover and return the machine to
the operating position.
Replacing the Spark Plug
Service Interval: Every 100 hours—Replace the
spark plug.
WARNING
Replacing the spark plug while the engine is
hot can result in burns.
Wait until the engine is cool to replace the
spark plug.
Use a Toro spark plug or equivalent (Champion®
RN9YC or NGK BPR6ES).
1.
Remove the boot
1. Spark-plug boot
2.
Clean around the base of the spark plug.
3.
Remove and discard the old spark plug.
Note:
You will need a ratchet wrench extension
to remove the spark plug.
(Figure
35).
Figure 35
Figure 36
4.
Set the gap between the electrodes on a new
spark plug at 0.76 mm (0.030 inch) as shown
in
Figure
1. 0.76 mm (0.030 inch)
5.
Install the new spark plug, tighten it firmly, and
attach the ignition wire to the spark plug.
Note:
Ensure that the ignition wire snaps
completely into place on the spark plug.
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37.
Figure 37
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