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3.
Measure the plug gap with a feeler gauge. Correct as necessary
by bending the side electrode, Figure 27. The gap should be set
to .02-.03 inches (0.60-0.80 mm).
Electrode
.030 in.
(0.76 mm)
4.
Check that the spark plug washer is in good condition and thread
the spark plug in by hand to prevent cross-threading.
5.
After the spark plug is seated, tighten with a spark plug wrench to
compress the washer.
NOTE: When installing a new spark plug, tighten 1⁄2-turn after the spark
plug seats to compress the washer. When reinstalling a used spark plug,
tighten 1⁄8- to 1⁄4-turn after the spark plug seats to compress the washer.
CAUTION
The spark plug must be tightened securely. A loose spark plug can
become very hot and can damage the engine.
SERVICE AND MAINTENANCE
Figure 27
Fuel Filter
Gasoline and its vapors are extremely flammable and explosive. Fire
or explosion can cause severe burns or death.
•
Keep gasoline away from sparks, open flames, pilot lights, heat,
and other ignition sources.
•
Check fuel lines, tank, cap, and fittings frequently for cracks
or leaks. Replace if necessary. See a Sears or other qualified
service dealer to replace fuel line.
•
Before replacing the fuel filter, drain the fuel tank or close the fuel
shut-off valve.
•
Replacement parts must be the same and installed in the same
position as the original parts.
•
If fuel spills, wait until it evaporates before starting engine.
To Drain the Fuel:
1.
Locate the fuel filter, which is routed on the right side of the
engine between the fuel tank and the engine. See Figure 28.
Clamps
2.
Pinch the in-line clamp on the fuel filter with a pair of pliers.
3.
Slide the clamp up the fuel line.
4.
Pull the fuel line free from the filter and place the open end of the
line into an approved container to drain the fuel.
To Replace the Fuel Filter:
1.
Before replacing the fuel filter, drain the fuel tank or close the fuel shut-
off valve. Otherwise, fuel can leak out and cause a fire or explosion.
2.
Use pliers to squeeze tabs on the clamps, then slide the clamps
away from the fuel filter. Twist and pull the fuel lines off of the fuel
filter. Refer to Figure 28.
3.
Check the fuel lines for cracks or leaks. Replace if necessary.
4.
Replace the fuel filter with an original equipment replacement filter.
5.
Secure the fuel lines with the clamps.
26
WARNING
Fuel Filter
Figure 28
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