Replacing The Fuel Filter - Toro Wheel Horse 520xi Operator's Manual

1. Park the machine on a level surface to ensure that the
fuel tank drains completely.
2. Disengage the PTO, set the parking brake, lower the
attachment lift, stop the engine, and remove the
ignition key.
3. Close the fuel shut-off valve at the fuel tank (Fig. 40
& 41).
Figure 40
1. Fuel shut-off valve
2
Figure 41
1. Hose clamp
2. Fuel line
4. Loosen the hose clamp and slide it up the fuel line
away from the fuel shut-off valve (Fig. 41).
5. Pull the fuel line off the fuel shut-off valve (Fig. 41).
Note: Some fuel will flow out from the hose as it is
disconnected from the valve.
6. Attach a 5/16 in. internal diameter hose to the valve to
help drain the fuel into the container.
7. Open the valve and allow gasoline to drain into a gas
can or drain pan.
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3. Fuel shut-off valve
Important Do not turn or unscrew the fuel shut-off
valve.
8. Remove the drain hose.
9. Install the fuel line onto the fuel shut-off valve.
10. Slide the hose clamp close to the valve to secure the
fuel line (Fig. 41).
Note: The fuel shut-off valve should normally be left
open, except for service on the fuel system or when the
tractor is transported on a trailer.

Replacing the Fuel Filter

Replace the fuel filter after every 100 operating hours.
1. Disengage the PTO, set the parking brake, lower the
attachment lift, stop the engine, and remove the
ignition key.
2. Close the fuel shut-off valve at the fuel tank (Fig. 40
& 41).
3. Open the hood and remove the side panels.
4. Squeeze the ends of the hose clamps together and slide
them away from the filter (Fig. 42).
5. Remove the filter from the fuel lines.
3
Figure 42
1. Hose clamp
2. Fuel line
6. Install a new filter and move the hose clamps close to
the filter.
Ensure that the flow direction arrow points toward the
engine.
7. Open the fuel shut-off valve at the fuel tank (Fig. 40
& 41).
8. Replace the side panels and close the hood.
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2
4
3. Filter
4. Flow direction arrow
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