Servicing The Fuel Filter; Servicing The Fuel Tank - Toro 74239 Operator's Manual

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.
2
1
Figure 40
1. Center electrode insulator
2. Side electrode
Installing the Spark Plug
1. Install the spark plug(s). Make sure the air gap is set
correctly.
2. Tighten the spark plug(s) to 20 ft-lb (27 N m).
3. Push the wire(s) onto the spark plug(s) (Fig. 39).

Servicing the Fuel Filter

Replace the fuel filter after every 200 operating hours or
yearly, whichever occurs first.
Replacing the Fuel Filter
Never install a dirty filter if it is removed from the fuel
line.
1. Allow the machine to cool down.
2. Disengage the PTO, move the motion control levers to
the neutral locked position and set the parking brake.
3. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
4. Close the fuel shut–off valve (Fig. 41).
5. Squeeze the ends of the hose clamps together and slide
them away from the filter (Fig. 41).
6. Remove the filter from the fuel lines.
3
0.030 inch
(0.76 mm)
m–3215
3. Air gap (not to scale)
(s)
34
7. Install a new filter and move the hose clamps close to
the filter (Fig. 42).
8. Wipe up any spilled fuel.
9. Open fuel shut-off valve (Fig. 41).
2 1
Figure 41
1. Filter
2. Hose clamp

Servicing the Fuel Tank

Draining The Fuel Tank
Danger
In certain conditions, gasoline is extremely
flammable and highly explosive. A fire or
explosion from gasoline can burn you and others
and can damage property.
Drain gasoline from the fuel tank when the
engine is cold. Do this outdoors in an open area.
Wipe up any gasoline that spills.
Never smoke when draining gasoline, and stay
away from an open flame or where a spark may
ignite the gasoline fumes.
1. Park the machine on a level surface, to ensure the fuel
tank drains completely. Then disengage the power take
off (PTO), set the parking brake, and turn the ignition
key to off. Remove the key.
2. Close the fuel shut–off valve (Fig. 42).
3. Loosen the hose clamp at the fuel filter and slide it up
the fuel line away from the fuel filter (Fig. 42).
4. Pull the fuel line off fuel filter (Fig. 42). Open fuel
shut-off valve and allow gasoline to drain into a gas
can or drain pan.
2
3
m–6842
3. Fuel shut-off valve