Servicing The Spark Plugs - Toro 30674 Operator's Manual

1. Oil filter
3. Apply a thin coat of new oil to the rubber gasket on
the replacement filter
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
5. Fill the crankcase with the proper type of new oil; refer
to Servicing the Engine Oil (page
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: Every 100 hours—Check the spark plugs.
Ensure that the air gap between the center electrode and the
side electrode is correct before installing each spark plug. Use
a spark-plug wrench for removing and installing the spark
plugs and a gapping tool or a feeler gauge to check and adjust
the air gap. Install 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 31
2. Adapter
(Figure 31).
(Figure 31).
26).
(Figure
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
Note: 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 3. Air gap (not to scale)
2. Side electrode
Important: Always replace the spark plugs when
they have worn electrodes, an oily film, or a
32).
cracked insulator.
3. Check the gap between the center electrode and the
side electrode
Note: Bend the side electrode
not correct.
28
Figure 32
(Figure
Figure 33
(Figure 33).
(Figure 33) if the gap is
1
33).