Servicing The Spark Plug - Toro 74585 Operator's Manual

11. Clean around the dipstick and unscrew the cap
(Figure 24).
12. Slowly pour approximately 80% of the engine oil
into the filler tube (Figure 24).
13. Check the engine oil level; refer to steps 9 and 10 of
Checking the Engine Oil Level.
Changing the Engine Oil Filter
Service Interval: Every 100 hours (Change it more
frequently when operating the
machine in dusty or dirty conditions.)
1. Drain the oil from the engine; refer to Changing the
Engine Oil.
2. Remove the old filter and wipe off the adapter gasket
surface (Figure 25).
1. Engine oil filter
2. Gasket
3. Apply a thin coat of new engine oil to the rubber
gasket on the new filter (Figure 25).
4. Install the new filter to the filter adapter by turning it
clockwise until the gasket contacts the filter adapter.
5. Tighten the filter an additional 1/2 to 3/4 turn
(Figure 25).
6. Fill the crankcase with the proper type of new engine
oil; refer to Checking the Engine Oil Level.
Figure 25
3. Adapter

Servicing the Spark Plug

Service Interval: Every 25 hours—Check the spark
plug.
Every 100 hours—Replace the spark
plug.
Use a Champion RC12YC or equivalent spark plug.
Ensure that the air gap between the center and side
electrodes is 0.030 inch (0.76 mm) before installing the
spark plug. Use a spark plug wrench for removing and
installing the spark plug and a gapping tool or feeler
gauge to check and adjust the air gap.
Removing the Spark Plug
1. Disengage the blades (PTO).
2. Set the parking brake.
3. Stop the engine and wait for all moving parts to stop.
4. Remove the ignition key.
5. Open the hood.
6. Disconnect the wire from the spark plug (Figure 26).
1. Spark plug
7. Clean around the spark plug to prevent dirt from
falling into the engine and potentially causing
damage.
8. Remove the spark plug and the metal washer
(Figure 26).
Checking the Spark Plug
1. Look at the center of the spark plug (Figure 27).
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.
23
Figure 26
2. Spark plug wire