B
A
g027478
g027478
Figure 42
Note:
Due to the deep recess around the spark
plug, blowing out the cavity with compressed air
is the most effective method for cleaning. The
spark plug is most accessible when the blower
housing is removed for cleaning.
Checking the Spark Plug
Important:
Do not clean the spark plug(s).
Always replace the spark plug(s) when it has: a
black coating, worn electrodes, an oily film, or
cracks.
If you see light brown or gray on the insulator, the
engine is operating properly. A black coating on the
insulator usually means the air cleaner is dirty.
Set the gap to 0.76 mm (0.03 inch).
B
A
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g027479
Figure 43
Installing the Spark Plug
Tighten the spark plug(s) to 25 to 30 N∙m (18.5 to
22.1 ft-lb).
B
A
25-30 N-m
18.5-22.1 ft-lb
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C
D
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Figure 44
Cleaning the Cooling
System
Clean the air intake screen from grass and debris
before each use.
1.
Disengage the blade-control switch and apply
the parking brake.
2.
Shut off the engine, remove the key, and wait
for all moving parts to stop before leaving the
operating position.
3.
Remove the air filter from the engine.
4.
Remove the engine shroud.
5.
To prevent debris entering the air intake, install
the air filter to the filter base.
6.
Clean debris and grass from the parts.
7.
Remove the air filter and install the engine
shroud.
8.
Install the air filter.
38
