Servicing The Spark Plug - Toro 74933 Operator's Manual

Servicing the Spark Plug

Service Interval: Every 100 hours
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(s) and a
gapping tool/feeler gauge to check and adjust the air gap.
Install a new spark plug(s) if necessary.
Type:Champion ® XC12YC or equivalent
Air Gap: 0.75 mm (0.030 inch)
Removing the Spark Plug
1. Shut off the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
2. Disengage the PTO, move the motion-control levers to
the -
NEUTRAL LOCK
3. Remove the left-hydraulic-unit shroud in the order
listed with Figure 50.
Note: This gives you access to the front spark plug.
1. Pull this tab out to the
side in the direction of the
arrow.
2. Pull the shroud off this
frame tab in the direction
of the arrow.
position and set the parking brake.
G021397
Figure 50
3. Pull the shroud off this
frame tab in the direction
of the arrow.
4. Shroud
4. Remove the spark plug.
A
g027478
5. Install the left-hydraulic-unit 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 0.76 mm (0.030 inches).
A
40
G021396
B
Figure 51
(Figure
B
g027479
Figure 52
50).