Servicing The Spark Plugs - Toro 74282 Operator's Manual

Changing the Oil
Service Interval: Every 100 hours
1. Start the engine and let it run five minutes. This
warms the oil so it drains better.
2. Park the machine so that the drain side is slightly
lower than the opposite side to ensure the oil drains
completely.
3. Disengage the PTO and set the parking brake.
4. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
5. Place a pan below the drain. Rotate oil drain valve to
allow oil to drain (Figure 34).
6. When oil has drained completely, close the drain
valve.
Note: Dispose of the used oil at a recycling center.
Figure 34
1. Oil drain valve
7. Slowly pour approximately 80% of the specified oil
into the filler tube (Figure 33).
8. Check the oil level; refer to Checking the Engine Oil
Level.
9. Slowly add the additional oil to bring it to the Full
mark.
Changing the Oil Filter
Service Interval: Every 200 hours
Note: Change the oil filter more frequently when the
operating conditions are extremely dusty or sandy.
1. Drain the oil from the engine; refer to Changing the
Engine Oil.
2. Remove the old filter and wipe the filler adapter
gasket surface (Figure 35).
2. Oil drain hose
1. Oil filter
2. Adapter gasket
3. Pour new oil in through the center hole of the filter.
Fill it up to the bottom of the threads inside.
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 35).
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 35).
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 36).
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.
32
Figure 35
3. Adapter