Toro 22984HD Operator's Manual page 30

Servicing the Spark Plug(s)
Service Interval: Every 500 hours
Make sure that the air gap between the center and
side electrodes is correct before installing the spark
plug(s). 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 of Spark Plug: Champion
equivalent
Air Gap: 0.76 mm (0.03 inch)
Removing the Spark Plug(s)
1. Park the machine on a level surface, engage
the parking brake (if applicable), and lower the
boom.
2. Shut off the engine and remove the key.
3. Locate and remove the spark plug(s) as shown
in Figure 35.
Figure 35
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30
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 0.75 mm (0.03 inch).
Figure 36
Installing the Spark Plug(s)
Figure 37
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