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Servicing the Spark Plug
Service Interval: Every 200 hours—Check the spark
plug(s).
Every 500 hours—Replace the spark plug(s).
Type: Champion XC12YC
Air Gap: 0.76 mm (0.03 inch)
Removing the Spark Plug
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.
Clean the area around the base of the plug(s) to
keep dirt and debris out of the engine.
4.
Locate and remove the spark plug(s) as shown
in
Figure
52.
Figure 52
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).
Installing the Spark Plug
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Figure 53
Figure 54
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