Draining The Fuel Tank; Replacing The Fuel Filter - Toro 170-DH Operator's Manual

Draining the Fuel Tank

Drain the fuel tank when you will not be using the tractor
for more than 30 days.
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 tractor 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 (Fig. 31).
Figure 31
1. Hose clamp
2. Fuel line
8. Pull the fuel line off the fuel filter (Fig. 31).
9. Open the fuel shut-off valve and allow the gasoline to
drain into an approved fuel container or a drain pan.
2
1
3
3. Fuel filter
32
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 (Fig. 31).

Replacing the Fuel Filter

Replace the fuel filter after every 100 operating hours or
yearly, whichever occurs first. The best time to replace the
fuel filter (Fig. 31) 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 tractor 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 shutoff valve (Fig. 32).
1
Figure 32
1. Fuel shut-off valve
7. Squeeze the ends of the hose clamps together and slide
them away from the old fuel filter (Fig. 31).
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 shutoff valve.