Servicing The Spark Plug - Toro 39514 Operator's Manual

Note:
You can exit the Service Engine screen at
any time by turning the key to either the OFF or the
START positions.

Servicing the Spark Plug

Service Interval: Every 160 hours
Type for all Engines: NGK BR6HS, Champion
RTL86C, or equivalent
Air Gap: 0.76 mm (0.030 inch)
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.
Removing the Spark Plug
1. Shut off the engine, engage the parking brake,
remove the key, and wait for all moving parts to
stop before leaving the operating position.
2. Remove the spark plug as shown in
Checking the Spark Plug
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
Figure 40
Installing the Spark Plug
Tighten the spark plug(s) to 22 N∙m (16 ft-lb).
40.
g027478
35
Figure 41
Figure 42
g206628
g027735