Servicing The Spark Plugs - Toro 30672 Operator's Manual

1. Oil filter
3. Apply a thin coat of new oil to the rubber gasket on
the replacement filter (Figure 31).
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 31).
5. Fill the crankcase with the proper type of new oil; refer
to Servicing the Engine Oil.
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—Check the spark plugs.
Ensure 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 a new spark plugs if necessary.
Type: Champion® RCJ8Y or equivalent Air Gap: 0.75 mm
(0.030 inch)
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 32).
Figure 31
2. Adapter
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 33). 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
Important: Always replace the spark plugs when
it has worn electrodes, an oily film on it, or has
cracks in the porcelain.
3. Check the gap between the center and side electrodes
(Figure 33). Bend the side electrode (Figure 33) if the
gap is not correct.
27
Figure 32
Figure 33
3. Air gap (not to scale)
1