Replacing The Fuel Filter; Draining The Fuel Tank - Toro 74178 Operator's Manual

2. Tighten the spark plug(s) to 20 ft.-lb. (27 N m).
3. Push the wire(s) onto 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.
1. Disengage the power take off (PTO), set the parking
brake, stop the engine, and remove the key.
2. Close the fuel shut-off valve on the console.
3. Squeeze the ends of the hose clamps together and slide
them away from the filter (Fig. 36).
4. Remove the filter from the fuel lines.
5. Install a new filter and move the hose clamps close to
the filter (Fig. 37).
6. Open the fuel shut-off valve on the console.
Figure 36
1. Filter
1
2
m–4088
2. Hose clamp
31

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 that the
fuel tanks drain completely. Then disengage the power
take off (PTO), set the parking brake, stop the engine,
and remove the key.
2. Close the fuel shut-off valve (Fig. 37).
3. Loosen the hose clamp at the fuel filter and slide it up
the fuel line away from the fuel filter (Fig. 37).
4. Pull the fuel line off of the fuel filter (Fig. 37).
5. Open the fuel shut-off valve for the left and right tanks.
Allow gasoline to drain into a gas can or drain pan
(Fig. 37).
Note: Now is the best time to install a new fuel filter
because the fuel tank is empty.
6. Install the fuel line onto the fuel filter. Slide the hose
clamp close to the fuel filter to secure the fuel line
(Fig. 37).
3
4
2
Figure 37
1. Fuel shut-off valve
2. Fuel filter
1
m–4088
3. Hose clamp
4. Fuel line