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1
3
5
Note: Ensure the oil filter gasket touches the engine
and then an extra 3/4 turn is completed.
3. Fill the crankcase with the proper type of new oil;
refer to Changing the Oil.
2
4
6
3/4
Figure 39
Servicing the Spark Plug
Service Interval: Every 100 hours (replace them as
G009950
Make sure 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(s) and a gapping tool/feeler gauge to
check and adjust the air gap. Install a new spark plug(s)
if necessary.
Type: Champion RC12YC
Air Gap: 0.030 inch (0.76 mm)
Removing the Spark Plug
1. Disengage the blade control switch (PTO), move the
motion control levers to the neutral lock position
and set the parking brake.
2. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
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G008748
Note: Due to the deep recess around the spark
plug, blowing out the cavity with compressed air
is usually 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: Never 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 0.030 inches (0.76 mm).
33
necessary)
Figure 40
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