Draining The Fuel Tank - Toro 74590 Operator's Manual

Checking the Spark Plug(s)
1. Look at the center of the spark plug(s) (Fig. 30). If you
see light brown or gray on the insulator, the engine is
operating properly. A black coating on the insulator
usually means the air cleaner is dirty.
Important
Never clean the spark plug(s). Always
replace the spark plug(s) when it has a black coating, worn
electrodes, an oily film, or cracks.
2. Check the gap between the center and side electrodes
(Fig. 30). Bend the side electrode (Fig. 30) if the gap is
not correct.
2
1
Figure 30
1. Center electrode insulator
2. Side electrode
Installing the Spark Plug(s)
1. Install the spark plug(s) and metal washer. Make sure
the air gap is set correctly.
2. Tighten the spark plug(s) to 15 ft.-lb. (20.4 N m).
3. Push the wire(s) onto the spark plug(s) (Fig. 29).
4. Close the hood.

Draining the Fuel Tank

The fuel tank must be drained when the machine will not
be used for more than 30 days.
3
.76 mm
(0.03 in.)
1870
3. Air gap (not to scale)
27
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 so that the left front side is slightly
lower than the right side to ensure that the fuel drains
completely. Disengage the PTO, set the parking brake,
stop the engine, and remove the ignition key.
2. Open the hood.
3. Squeeze the ends of the hose clamp together and slide it
up the fuel line toward the fuel tank (Fig. 31).
4. Pull the fuel line off of the filter (Fig. 31) and allow
gasoline to drain into a gas can or drain pan.
Note: Now is the best time to install a new fuel filter
because the fuel tank is empty.
3 1 2
Figure 31
1. Hose clamp
2. Fuel line
5. Install the fuel line onto the filter. Slide the hose clamp
close to the filter to secure the fuel line and filter.
3. Filter