Toro 72958 Operator's Manual page 43

4. Remove the spark plug.
Figure 51
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 52
Installing the Spark Plug(s)
1. Install the spark plug(s) as shown in
2. Install the hydraulic shroud
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Figure 53.
(Figure 50).
43
Figure 53
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