Servicing The Spark Plugs - Toro 30071 Operator's Manual

Changing the Oil Filter
Note: Change the oil filter more frequently when the
operating conditions are extremely dusty or sandy.
1. Drain the oil from the engine; refer to Changing the
Engine Oil (page 22).
2. Remove the old filter (Figure 24).
Figure 24
1. Oil filter
3. Apply a thin coat of new oil to the rubber gasket on
the replacement filter (Figure 24).
4. Install the replacement oil filter to the filter adapter,
turn the oil filter clockwise until the rubber gasket
contacts the filter adapter, then tighten the filter an
additional 3/4 turn (Figure 24).
5. Fill the crankcase with the proper type of new oil; refer
to Servicing the Engine Oil (page 21).
6. Run the engine for about 3 minutes, stop 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/Specification
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 plugs and a
gapping tool/feeler gauge to check and adjust the air gap.
Install a new spark plugs if necessary.
Type: Champion® RCJ8Y or equivalent Air Gap: 0.75 mm
(0.030 inch)
2. Adapter
Removing the Spark Plugs
1. Disengage the PTO 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.
3. Disconnect the wires from the spark plugs (Figure 25).
1. Spark-plug wire/spark plug
4. Clean around the spark plugs to prevent dirt from
falling into the engine and potentially causing damage.
5. Remove the spark plugs and the metal washers.
Checking the Spark Plugs
1. Look at the center of the spark plugs (Figure 26).
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.
2. If needed, clean the spark plug with a wire brush to
remove carbon deposits.
1. Center electrode insulator
2. Side electrode
23
Figure 25
Figure 26
3. Air gap (not to scale)
1