Servicing The Spark Plugs - Toro 30672 Operator's Manual

4. Install the replacement oil filter to the filter
adapter, turn the oil filter clockwise until the
rubber gasket contacts the filter adapter, and
tighten the filter an additional 3/4 turn
27).
5. Fill the crankcase with the proper type of new oil.
6. Run the engine for approximately 3 minutes,
shut off the engine, and check for oil leaks
around the oil filter and drain valve.
7. Check the engine-oil level and add oil, if needed.
8. Wipe up any spilled oil.

Servicing the Spark Plugs

Service Interval: Every 100 hours—Check the spark
plugs.
Make sure 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: NGK® BPR4ES or equivalent
Air Gap: 0.75 mm (0.030 inch)
Removing the Spark Plugs
1. Disengage the 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. Remove the spark plugs as shown in
28).
Figure 28
Checking the Spark Plugs
Important:
replace the spark plugs when they have: a black
(Figure
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).
Installing the Spark Plugs
Tighten the spark plugs to 22 N∙m (16 ft-lb).
(Figure
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29
Do not clean the spark plugs. Always
Figure 29
Figure 30
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