Toro 72946 Operator's Manual page 42

Figure 50
Note:
Ensure that the oil-filter gasket touches
the engine, and then turn the oil filter an extra
3/4 turn.
3. Fill the crankcase with the proper type of new
oil; refer to Engine-Oil Specifications (page
Servicing the Spark Plug(s)
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 and a gapping tool or feeler gauge to
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check and adjust the air gap. Install a new spark plug
if necessary.
Type of Spark Plug: NGK
Air Gap: 0.75 mm (0.03 inch)
Removing the Spark Plug(s)
1. Park the machine on a level surface, disengage
the blade-control switch (PTO), and engage the
parking brake.
2. Shut off the engine, remove the key, and wait
for all moving parts to stop before leaving the
operating position.
3. Clean the area around the base of the plug to
keep dirt and debris out of the engine.
4. Locate and remove the spark plug(s) as shown
in Figure
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39).
Checking the Spark Plug(s)
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).
42
® BPR4ES or equivalent
51.
Figure 51
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