Servicing The Spark Plugs - Toro ProCore Operator's Manual

4. Allow the filter material to absorb the new oil for
1 to 2 minutes.
5. Apply a thin coat of new oil to the rubber gasket on
the replacement filter (Figure 49).
6. 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 2/3 to 1 turn (Figure 49).
7. Fill the crankcase with the proper type of new oil;
refer to Servicing the Engine Oil.
8. Run the engine for about 3 minutes, stop the engine,
and check for oil leaks around the oil filter.
9. Check the engine oil level and add oil if needed.

Servicing the Spark Plugs

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® RC12YC, Champion® Platinum
3071 or equivalent
Air Gap: 0.030 inch (0.76 mm)
Checking the Spark Plugs
Service Interval: Every 200 hours
1. Look at the center of the spark plugs (Figure 50).
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.
1. Center electrode insulator
2. Side electrode
Figure 50
3. Air gap (not to scale)
Important: Always replace the spark plugs
when it has a black coating, worn electrodes,
an oily film, or cracks.
2. Check the gap between the center and side electrodes
(Figure 50). Bend the side electrode (Figure 50) if
the gap is not correct.
Removing the Spark Plugs
1. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
2. Disconnect the wires from the spark plugs
(Figure 51).
1. Spark-plug wire
3. Clean around the spark plugs to prevent dirt from
falling into the engine and potentially causing
damage.
4. Remove the spark plugs and the metal washers.
Installing the Spark Plugs
1. Install the spark plugs and the metal washer. Ensure
that the air gap is set correctly.
2. Tighten the spark plugs to 18 to 22 ft-lb (24.4 to
29.8 N-m).
3. Connect the wires to the spark plugs (Figure 50).
38
Figure 51
2. Spark plug