Toro 68038, Operator'S Manual, Page: 40 / 57

Engine Oil Service (continued)
2. Park the machine on a level surface, engage the parking brake, and shut off the engine.
3. Have a funnel ready to place under the oil drain plug, then remove the plug and place
the funnel under the plug to guide the oil into a container.
CAUTION
Components will be hot if the machine has been running. If you touch hot
components, you may be burned.
Use care to avoid touching hot components while changing the oil and/or filter.
4. Install the drain plug and wipe away excess oil from the machine.
5. Fill the crankcase with the specified oil.
6. Dispose of the oil properly. Recycle the used oil according to local codes.
Replacing the Spark Plug
1. Remove the spark-plug wire.
2. Clean around spark plug and remove plug from cylinder head.
Note:
Replace a cracked, fouled, or dirty spark plug. Do not sand blast, scrape, or clean
electrodes because engine damaged could result from grit entering the cylinder.
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3. Set the air gap at 0.70 to 0.80 mm (0.028 to
0.031 inch)
. Install the spark plug carefully
by hand to avoid cross-threading.
4. After the spark plug is seated, tighten it with a
spark plug wrench to compress the sealing
washer.
5. When installing a new spark plug, tighten 1/2
turn after the spark plug seats to compress the washer.
6. When installing the original spark plug, tighten 1/8 to 1/4 turn after the spark plug seats
to compress the washer.
Note:
A loose spark plug can overheat and damage the engine. Overtightening the
spark plug can damage the threads in the cylinder head.
7. Connect the spark-plug wire.
Cleaning the Blower Housing
To ensure proper cooling, ensure that the cooling fins and other external surfaces of the
engine are kept clean at all times.
Ensure that the cooling shrouds are installed.
Maintenance: Engine Maintenance Page 5–9 3451-702 A