Servicing The Spark Plug - Toro 74225 Operator's Manual

1
Figure 37
1. Oil drain plug
5. Pour approximately 80% of the specified amount of
oil, on page 32, into the filler tube (Fig. 37). Now
check the oil level; refer to Checking Oil Level, page
32. Slowly add additional oil to bring to full mark on
dipstick.
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 32.
2. Remove the old filter and wipe the filter adapter
(Fig. 38) gasket surface.
3. Pour new oil of the proper type in through the center
hole. Stop pouring when the oil reaches the bottom of
the threads. Allow a minute or two for the oil to be
absorbed by filter material.
4. Apply a thin coat of new oil to the rubber gasket on
the replacement filter (Fig. 38).
1
Figure 38
1. Oil filter
2. Gasket
5. 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 (Fig. 38).
6. Fill the crankcase with the proper type of new oil;
refer to Changing/Draining Oil, page 32.

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: 0.030 in. (0.76 mm)
Removing the Spark Plug
1. Disengage the power take off (PTO) and turn the
ignition key to off. Move levers to neutral locked
position and apply parking brake. Remove the key.
2. Pull the wire(s) off the spark plug(s) (Fig. 39). 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.
33
3
2
m–1256
3. Adapter
(s)