Checking The Interlock System; Towing The Traction Unit - Toro 03170 Operator's Manual

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 spilled fuel.
• Do not fill the fuel tank completely full. Add
fuel to the fuel tank until the level is 1/4 to
1/2 inch (6 to 13 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
(Figure 41).
Figure 41
1. Fuel injection pump bleed screw
4. Turn the key in the ignition switch to the On
position. The electric fuel pump will begin
operation, thereby forcing air out around the air
bleed screw.
Note: Leave the key in the On position until a solid
stream of fuel flows out around the screw.
5. Tighten the screw and turn the key to Off.
Note: Normally the engine should start after following
the bleeding procedures above. However, if the engine
does not start, air may be trapped between the injection
pump and the injectors; refer to Bleeding Air from the
Injectors.

Checking the Interlock System

Service Interval: Before each use or daily
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. Ensure that all bystanders are away from the area of
operation, and keep hands and feet away from the
cutting units.
2. While sitting on the seat, the engine must not start
with either the cutting unit switch engaged or the
traction pedal engaged. Correct the problem if it is
not operating properly.
3. While sitting on the seat, put the traction pedal in
neutral, disengage the parking brake, and set the
cutting unit switch in the Off position. The engine
should start. Rise from the seat and slowly press
the traction pedal, and the engine should stop in
one to three seconds. Correct the problem if it is
not operating properly.
Note: The machine is equipped with an interlock
switch on the parking brake. The engine will stop if
the traction pedal is pressed with the parking brake
engaged.

Towing the Traction Unit

In case of an emergency, the machine can be towed for
a short distance; however, Toro does not recommend
this as a standard procedure.
Important: Do not tow the machine faster than 2
to 3 mph (3 to 4 km/h) because it may damage
the drive system. If the machine must be moved a
considerable distance, transport it on a truck or
trailer.
1. Locate the bypass valve on the pump (Figure 42)
and rotate it 90°.
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