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Checking the Spark Plug(s)
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).
Figure 59
Figure 60
Installing the Spark Plug(s)
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Cleaning the Blower
Housing
To ensure proper cooling, ensure that the grass
screen, cooling fins, and other external surfaces of the
engine are kept clean at all times.
Important:
Operating the engine with a blocked
grass screen, dirty or plugged cooling fins, and/or
cooling shrouds removed, will cause engine
damage due to overheating.
Cleaning the Cooling
System
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1.
Park the machine on a level surface, disengage
the blade-control switch (PTO), and engage 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.
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Figure 61
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