Servicing The Spark Plug(S); Replacing The Fuel Filter - Toro 74413 Operator's Manual

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3. Apply a thin coat of new oil to the rubber gasket on the
replacement filter (Fig. 33).
4. 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 3/4 turn (Fig. 33).
5. Fill the crankcase with the proper type of new oil; refer
to Servicing the Engine Oil on page 29.
6. Run the engine for about 3 minutes, stop the engine,
and check for oil leaks around the oil filter.
7. Check the engine oil level and add oil if needed.

Servicing the Spark Plug(s)

Service Interval/Specification
Check the spark plug(s) after every 100 operating hours.
Ensure that the air gap between the center and side
electrodes is correct before installing the spark plug(s). 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 if necessary.
Type: Champion RCJ-8Y or equivalent
Air Gap: 0.030 inch (0.75 mm)
Removing the Spark Plug(
1. Disengage the PTO and set the parking brake.
2. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Disconnect the wire(s) from the spark plug(s) (Fig. 34).
1
Figure 34
1. Spark-plug wire/spark
plug
4. Clean around the spark plug(s) to prevent dirt from
falling into the engine and potentially causing damage.
5. Remove the spark plug(s) and the metal washer(s).
Checking the Spark Plug(s)
1. Look at the center of the spark plug(s) (Fig. 35). If you
1. Center electrode insulator
2. Side electrode
has a black coating, worn electrodes, an oily film, or
cracks.
2. Check the gap between the center and side electrodes
s)
Installing the Spark Plug(
1. Install the spark plug(s) and the metal washer(s).
2. Tighten the spark plug(s) to 16 ft-lb (22 N m).
3. Connect the wire(s) to the spark plug(s) (Fig. 34).

Replacing the Fuel Filter

Replace the fuel filter after every 200 operating hours or
yearly, whichever occurs first.
Never install a dirty filter if it is removed from the fuel line.
m–7453
1. Disengage the PTO, move the motion control levers to
2. Stop the engine, remove the key, and wait for all
3. Allow the machine to cool down.
31
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.
2
1
Figure 35
Important
Always replace the spark plug(s) when it
(Fig. 35).
Note: Bend the side electrode (Fig. 35) if the gap is not
correct.
Note: Ensure that the air gap is set correctly.
the neutral locked position, and set the parking brake.
moving parts to stop before leaving the operating
position.
3
0.030 inch
(0.75 mm)
3. Air gap (not to scale)
s)

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