Toro 74901 Operator's Manual page 38

Figure 51
1. Pull this tab out to the
side in the direction of the
arrow
2. Pull the shroud off of this
frame tab in the direction
of the arrow
4. Remove the spark plug.
G008803
Figure 52
5. Install the lefthand hydraulic unit shroud (Figure 51).
3. Pull the shroud off of this
frame tab in the direction
of the arrow
4. Shroud
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).
1
Installing the Spark Plug
Tighten the spark plug(s) to 18-22 ft.-lb (24.4–29.8
N-m).
38
2
G008794
Figure 53
Figure 54