Servicing The Spark Plug - Toro 74625 Operator's Manual

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Figure 33
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G008748
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Note:
Ensure the oil filter gasket touches the engine
and then an extra 3/4 turn is completed.
Fill the crankcase with the proper type of new oil;
refer to (;hanging the Oil.
Servicing the Spark Plug
Service Interval:
Every i00 hours--Check
the spark
plug(s).
Make sure 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 necessar>
Type: NGK BPR4ES (or equivalent)
Air Gap: 0.030 inch (0.76 ram)
Removing the Spark Plug
1. Disengage the PTO, move the motion control levers
to the neutral locked position and set the parking
brake.
2. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
G008791
Figure 34
Note:
Due to the deep recess around the spark
plug, blowing out the cavity with compressed air
is usually the most effective method for cleaning.
The spark plug is most accessible when the blower
housing is removed for cleaning.
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 ram).
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Figure 35
G008794
Installing the Spark Plug
Tighten the spark plug(s) to 16 fr-lb (22 N-m).
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