Bleeding The Fuel System; Checking The Interlock System; Pushing Or Towing The Machine - Toro 30344 Operator's Manual

position and rotate ignition key to the O
Remove key from the switch to prevent accidental
starting.

Bleeding the Fuel System

1. Park the machine on a level surface.
2. Ensure that the fuel tank is at least half full.
3. 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 to
the bottom of the filler neck.
• 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.
4. Open the air-bleed screw on the fuel injection pump
(Figure 31).
1. Air-bleed screw
5. Turn the key in the ignition switch to the O
The electric fuel pump will begin operation, thereby
forcing air out around the air-bleed screw.
6. Leave the key in the O
of fuel flows out around the screw.
7. Tighten the screw and turn key to the O
Note: The engine should start after you perform
this procedure. However, if engine does not start, air
position.
FF
Figure 31
N
position until a solid stream
N
position.
FF
may be trapped between the injection pump and the
injectors; refer to
(page

Checking the Interlock System

The purpose of the safety interlock system is to prevent the
engine from cranking or starting unless the traction pedal
is in neutral and the PTO switch is in the O
addition, the engine should stop when
•
the PTO control is engaged with the operator off the seat;
•
the traction pedal is pressed with the operator off the seat;
•
the traction pedal pressed with the parking brake engaged.
CAUTION
If the safety-interlock switches are disconnected or
damaged, the machine could operate unexpectedly,
causing personal injury.
• Do not tamper with the interlock switches.
• Check the operation of the interlock switches
daily and replace any damaged switches before
operating the machine.
1. Move PTO switch to O
from traction pedal so it is fully released.
2. Rotate the ignition key to Start.
Note: The engine should crank; if the engine cranks,
proceed to step 3. If engine does not crank, there may
be a malfunction in the safety-interlock system.
3. Raise off the seat and engage the PTO switch while
the engine is running. The engine should stop within
2 seconds. If engine stops, the switch is operating
correctly; thus, proceed to step 4. If engine does not
stop, there is a malfunction in the safety-interlock
system.
4. Raise off the seat and press the traction pedal while
engine is running and the PTO lever is disengaged.
The engine should stop within 2 seconds. If engine
stops, the switch is operating correctly; thus, proceed
to step
in the safety-interlock system.
5. Engage the parking brake. Depress the traction
pedal while engine is running and the PTO lever is
disengaged. The engine should stop within 2 seconds.
If engine stops, the switch is operating correctly; thus,
position.
continue operation. If engine does not stop, there is a
malfunction in the safety-interlock system.
Pushing or Towing the
Machine
In an emergency, the machine can be pushed or towed for a
very short distance. However, Toro does not recommend this
as standard procedure.
33
Bleeding the Air from the Injectors
44).
position and remove foot
FF
5 If engine does not stop, there is a malfunction
position. In
FF