Servicing The Spark Plug - Toro TITAN ZX 4800 Operator's Manual

A
C
E
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Figure 47
Note: Ensure the oil filter gasket touches the engine
and then an extra 3/4 turn is completed.
3. Fill the crankcase with the proper type of new oil.

Servicing the Spark Plug

Service Interval: Every 100 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 necessary.
Type: NGK BPR4ES
Air Gap: 0.76 mm (0.03 inch)
Removing the Spark Plug
1. Disengage the PTO, move the motion-control levers
to the N -L
EUTRAL OCK
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 plug
B
D
F
3/4
position, and set the parking
(Figure 48).
A
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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 0.03 inches (0.76 mm).
A
Installing the Spark Plug
Tighten the spark plug(s) to 22 N•m (16 ft-lb) as shown in
Figure 50.
A
C
16 ft-lb
22 N-m
37
B
Figure 48
B
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Figure 49
B
D
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Figure 50