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7.
Dispose of the used oil at a recycling center.
Servicing the Spark Plug
Service Interval: Yearly—Change the spark plug(s).
Ensure that the air gap between the center and side
electrodes is correct before installing the spark plug.
Use a spark plug wrench for removing and installing
the spark plug and a gapping tool or feeler gauge to
check and adjust the air gap. Install a new spark plug
if necessary.
Type: Champion
®
XC92YC
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, and move the
motion-control levers outward to the P
position.
2.
Shut off the engine, remove the key, and wait
for all moving parts to stop before leaving the
operating position. Allow the engine to cool.
3.
Clean the area around the base of the plug to
keep dirt and debris out of the engine.
4.
Remove the spark plug
Figure 37
(Figure
38).
Checking the Spark Plug
Important:
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.
g373565
Set the gap to 0.75 mm (0.03 inch).
Installing the Spark Plug
ARK
33
Figure 38
Do not clean the spark plug(s).
Figure 39
Figure 40
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