Servicing The Spark Plug - Toro 74621 Operator's Manual

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1. Oil fill hole
2. Drain valve
7. Turn the drain valve 1/4 counter clockwise to
open and allow the oil to drain. Remove the oil fill
cap/dipstick (Figure 30).
8. When oil has drained completely, close the oil drain
valve. Remove the oil drain hose and wipe up any
excess oil on the frame.
Note: Dispose of the used oil at a certified recycling
center.
9. Change the oil filter; refer to Changing the Oil Filter.
10. Slowly pour approximately 80% of the specified
amount of oil into the fill hole (Figure 30). Check
the oil level; refer to Checking the Oil Level.
11. Install the oil fill cap/dipstick.
Changing the Oil Filter
Service Interval: Every 100 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 Oil.
2. Remove the old oil filter and wipe the filter adapter
(Figure 31) gasket surface.
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G017864
Figure 30
3. Oil drain hose
4. Pan
1. Oil filter
2. Gasket
3. Apply a thin coat of new oil to the rubber gasket on
the new oil filter (Figure 31).
4. Install the new oil filter to the filter adapter.
5. Turn the oil filter clockwise until the rubber gasket
contacts the filter adapter, then tighten the oil filter
an additional 1/2 to 3/4 turn (Figure 31).
6. Slowly pour about 80% of the specified amount of
oil into the fill hole (Figure 29). Check the oil level;
refer to the Checking the Oil Level procedure.

Servicing the Spark Plug

Service Interval: Every 50 hours—Check the spark
plug.
Every 100 hours—Replace the spark
plug.
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
plug and a gapping tool or feeler gauge to check and
adjust the air gap. Install a new spark plug if necessary.
Type: Champion RC12YC, Autolite 3924, NGK
BCPR6ES or equivalent
Air Gap: 0.030 inch (0.76 mm)
Removing the Spark Plug
1. Disengage the blade control (PTO).
2. Stop the engine, wait for all moving parts to stop, and
remove the key before leaving the operating position.
3. Disconnect the wire from the spark plug (Figure 32).
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Figure 31
3. Filter adapter