Bleeding The Fuel System; Checking The Interlock Switches - Toro 30631 Operator's Manual

parts and any other noticeable malfunctions.
CAUTION
Shut off the engine and wait for all moving
parts to stop before checking for oil leaks, loose
parts or other malfunctions.
6. To stop the engine, move the throttle control
backward to the SLOW position, move the power
take-off switch to the OFF position and turn the
ignition key to OFF. Remove the key from the
switch to prevent accidental starting.

Bleeding the Fuel System

1. Park the machine on a level surface. Make sure
the fuel tank is at least half full.
2. Unlatch and raise the hood.
DANGER
Under certain conditions, diesel fuel and fuel
vapors are highly flammable and explosive. A
fire or explosion from fuel can burn you and
others and can cause property damage.
• Use a funnel and fill the fuel tank
outdoors, in an open area, when the engine
is off and is cold. Wipe up any fuel that
spills.
• Do not fill the fuel tank completely full.
Add fuel to the fuel tank until the level is
1 in. (25 mm) below the bottom of the
filler neck. This empty space in the tank
allows the fuel to expand.
• Never smoke when handling fuel, and stay
away from an open flame or where fuel
fumes may be ignited by a spark.
• Store fuel in a clean, safety-approved
container and keep the cap in place.
3. Open the air bleed screw on the fuel injection
pump (Fig. 13).
1. Fuel injection pump bleed screw
4. Turn the key in the ignition switch to ON. The
electric fuel pump will begin operation, and force
air out around the air bleed screw. Leave the key
in the ON position until a solid stream of fuel
flows out around the screw. Tighten the screw
and turn the key to OFF.
Note: Normally, the engine should start after these
bleeding procedures. However, if it doesn't, air may
be trapped between the injection pump and injectors;
refer to Bleeding Air from Injectors, page 27.

Checking the Interlock Switches

CAUTION
If safety interlock switches are disconnected or
damaged the machine could operate
unexpectedly causing personal injury.
• Do not tamper with the interlock switches.
• Check interlock switch operation daily
and replace any damaged switches before
operating the machine.
• Replace switches every two years or 1,000
hours, whichever occurs first.
The machine has interlock switches in the electrical
system. They are designed to stop the engine when
you get off the seat while the power take-off lever is
engaged or the traction pedal is depressed. However,
you may get off the seat while the engine is running.
Although the engine will continue to run if the power
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1
Figure 13