Servicing The Spark Plug - Toro 23522 Operator's Manual

Figure 22
6. Add oil to the machine so that the oil level
reaches the "Full" mark on the dipstick.

Servicing the Spark Plug

Service Interval: Every 50 hours—Check the spark
plug.
Every 100 hours—Replace the spark plug.
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 and a gapping tool or feeler gauge to
check and adjust the air gap. Install a new spark plug
if necessary.
Spark Plug Specification
Type: Champion ® RC12YC, Autolite
NGK ® BPR6ES
Air Gap: 0.76 mm (0.030 inch)
Removing the Spark Plug
1.
2.
3.
Checking the Spark Plug
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Important:
Always replace the spark plug(s) when it has: a
black coating, worn electrodes, an oily film, or
cracks.
Note:
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 inch).
® 3924, or
19
Park the machine on a level surface, shut off the
engine, and remove the key from the ignition
switch.
Before removing the spark plug(s), clean the
area around the base of the plug to keep dirt
and debris out of the engine.
Remove the spark plug
Figure 23
Do not clean the spark plug(s).
If you see light brown or gray on the insulator,
Figure 24
(Figure 23).
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