Toro Z-Master Z153 Operator's Manual page 30

Change 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 29.
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 29.
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)
3
2
m–1256
3. Adapter
30
Removing the Spark Plug
1. Disengage the power take off (PTO), set the parking
brake, and turn the ignition key to "OFF" to stop the
engine. 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.
2
Figure 39
1. Spark plug wire
Checking the Spark Plug
1. Look at the center of the spark plug(s) (Fig. 40). 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
(Fig. 40). Bend the side electrode (Fig. 40) if the gap is
not correct.
(s)
1
m–4089
2. Spark plug