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Repmacing the Spark
Plug
Use a replacement part number 180852 spark plug. The
correct air gap is 0.025 in. (0.655 mm.). Remove the plug
after every 25 hours of operation and check its
condition.
1. Stop the engine and allow it to cool. Grasp the plug
wire firmly and pull the cap from the spark plug.
2.
Clean dirt from around the spark plug. Remove the
spark plug from the cylinder head by turning a 5/8 in.
socket counterclockwise.
3.
Replace cracked, fouled or dirty spark plug. Set the air
gap at 0.025 in. (0.655 mm.) using a feeler gauge (Fig. 28).
Spark
Arrestor
Maintenance
1.
Remove the muffler cover. See Rocker Arm Clearance.
2. With a flat blade screwdriver or Torx T-20 bit,
remove the screw attaching the spark arrestor cover
to the muffler (Fig. 29).
Muffler
Spark Arrestor
Screen
0.025 in.
{0.655 ram.)
Fig. 28
the cylinder.
4.
Install a correctly-gapped
spark plug in the cylinder
head. Turn the 5/8 in. socket clockwise
until snug.
If using a torque wrench torque to:
110-120 in.qb. (12.3-13.5 N,m)
Do not over tighten.
3.
4.
5.
6.
Fig. 29
Pull the tab on the spark arrestor cover out of the
muffler. Remove the spark arrestor cover.
Remove the spark arrestor screen from the spark
arrestor cover.
Clean the spark arrestor screen with a wire brush or
replace it.
Reinstall the spark arrestor screen, spark arrestor
cover and screw.
17
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