Servicing The Spark Plug - Toro Proline 30187 Operator's Manual

Changing the Engine Oil Filter
Replace the oil filter every 200 hours or every other oil
change.
Note: Change oil filter more frequently when operating
conditions are extremely dusty or sandy.
1. Drain the oil from the engine; refer to
Changing/Draining Oil, page 22.
2. Remove the old filter and wipe the filter adapter
(Figure 21) gasket surface.
3. Apply a thin coat of new oil to the rubber gasket on the
replacement filter (Figure 21).
1
3
Figure 21
1. Oil filter
2. Gasket
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 1/2 turn (Figure 21).
5. Fill the crankcase with the proper type of new oil; refer
to Changing/Draining Oil, page 22.

Servicing the Spark Plug

Check the spark plug(s) after every 200 operating hours.
Make sure 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
plug(s) and a gapping tool/feeler gauge to check and adjust
the air gap. Install a new spark plug(s) if necessary.
Type: Champion RC12YC or equivalent
Air Gap: 0.040 inch (1.02 mm)
Removing the Spark Plug
1. Disengage the power take off (PTO), set the parking
brake, and turn the ignition key to off. Remove the key.
2
m–1256
3. Adapter
(s)
23
2. Pull the wire(s) off the spark plug(s) (Figure 22). Now
clean around the spark plug(s) to prevent dirt from
falling into the engine and potentially causing damage.
3. Remove the spark plug(s) and metal washer.
2
Figure 22
1. Spark plug wire
Checking the Spark Plug
1. Look at the center of the spark plug(s) (Figure 23). If
you see light brown or gray on the insulator, the engine
is operating properly. A black coating on the insulator
usually means the air cleaner is dirty.
Important
Never clean the spark plug(s). Always
replace the spark plug(s) when it has: a black coating, worn
electrodes, an oily film, or cracks.
2. Check the gap between the center and side electrodes
(Figure 23). Bend the side electrode (Figure 23) if the
gap is not correct.
2
1
Figure 23
1. Center electrode insulator
2. Side electrode
1
m–2597
2. Spark plug
3
0.040 inch
(1.02 mm)
m–1870
3. Air gap (not to scale)