Draining The Fuel Tank - Toro 74571 M74571 Operator's Manual

Checking the Spark Plug
1. Look at the center of the spark plug (Fig. 27). If you see
light brown or gray on the insulator, the engine is
operating properly. A black coating on the insulator
usually means that the air cleaner is dirty.
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1
Figure 27
1. Center electrode insulator
2. Side electrode
Important Do not clean the spark plug. Always
replace the spark plug when it has a black coating, worn
electrodes, an oily film, or cracks.
2. Check the gap between the center and side electrodes
(Fig. 27) and bend the side electrode if the gap is not
correct.
Installing the Spark Plug
1. Install the spark plug and metal washer. Ensure that the
air gap is set correctly.
2. Tighten the spark plug to 15 ft-lb (20.4 N⋅m).
3. Connect the wire to the spark plug (Fig. 26).
4. Close the hood.

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.
3
0.030 in.
(0.76 mm)
m-1870
3. Air gap (not to scale)
30
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. 28).
Figure 28
1. Hose clamp
2. Fuel line
8. Pull the fuel line off the fuel filter (Fig. 28).
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 (Fig. 28).
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1
3
3. Fuel filter