Fuel System Maintenance; Draining The Fuel Tank; Replacing The Fuel Filter - Toro 4573 Operator's Manual

Fuel System
Maintenance

Draining the Fuel Tank

Drain the fuel tank when you will not be using the
machine for more than 30 days.
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 so that the left front side is slightly
lower than the right side to ensure that the fuel tank
drains completely.
2. Disengage the blades (PTO).
3. Set the parking brake.
4. Stop the engine and wait for all moving parts to stop.
5. Remove the ignition key.
6. Close the fuel shut-off valve located under the front
of the fuel tank.
7. Loosen the hose clamp at the fuel filter and slide it
up the fuel line away from the fuel filter (Figure 26).
Figure 26
1. Hose clamp
2. Fuel line
3. Fuel filter
8. Pull the fuel line off the fuel filter (Figure 26).
9. Open the fuel shut-off valve and allow the gasoline
to drain into an approved fuel container or a drain
pan.
Note: Now is the best time to install a new fuel
filter because the fuel tank is empty.
10. Install the fuel line onto the fuel filter.
11. Slide the hose clamp close to the fuel filter to secure
the fuel line (Figure 26).

Replacing the Fuel Filter

Service Interval: Every 100 hours/Yearly (whichever
comes first)
The best time to replace the fuel filter (Figure 26) is
when the fuel tank is empty. Never install a dirty fuel
filter after it has been removed from the fuel line.
1. Park the machine on a level surface.
2. Disengage the blades (PTO).
3. Set the parking brake.
4. Stop the engine and wait for all moving parts to stop.
5. Remove the ignition key.
6. Close the fuel shut-off valve (Figure 27).
1. Fuel shut-off valve
7. Squeeze the ends of the hose clamps together and
slide them away from the old fuel filter (Figure 27).
8. Remove the old fuel filter from the fuel line.
9. Install a new fuel filter and move the hose clamps
close to it.
10. Open the fuel shut-off valve.
26
Figure 27