Servicing The Spark Plugs - Toro 74310 Operator's Manual

Changing the Engine-Oil Filter
Service Interval: Every 200 hours
Note: Change the engine oil filter more frequently when
operating conditions are extremely dusty or sandy.
1. Drain the oil from the engine; refer to
Engine Oil (page 34).
2. Change the engine oil filter
Note: Allow 2 minutes for the new oil to be absorbed
by the new filter material.
Figure 34
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; refer
to Checking the Engine-Oil Level (page
Changing the
(Figure 34).
33).

Servicing the Spark Plugs

Service Interval: Every 200 hours—Check and gap the
spark plug (EFI engines only).
Every 500 hours—Check and gap the spark plug
(Non-EFI engines only).
Make sure that the air gap between the center and side
electrodes is correct before installing the spark plugs. Use a
spark-plug wrench for removing and installing the spark plugs
and a gapping tool/feeler gauge to check and adjust the air
gap. Install new spark plugs if necessary.
Type for EFI engines: Champion
Type for Non-EFI engines: Champion
equivalent
Air Gap: 0.76 mm (0.030 inch)
Removing the Spark Plugs
1. Move the speed-control lever to the N
to stop the machine.
2. Disengage the PTO, engage the parking brake, shut off
the engine, and wait for all moving parts to stop.
3. Remove the spark plugs.
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Checking the Spark Plugs
Important: Replace the spark plugs when they have: a
black coating, worn electrodes, an oily film, cracks or
reuse is questionable.
If you see light brown or gray on the insulator, the engine is
operating properly. A black coating on the insulator usually
means that the air cleaner is dirty.
Set the gap to 0.76 mm (0.030 inch).
A
35
® XC12YC or equivalent
®
RC12YC or
EUTRAL
B
Figure 35
B
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Figure 36
position