Checking The Interlock Switches; Pushing Or Towing The Machine - Toro 31598 Operator's Manual

procedures, wait 2 minutes, and repeat the
starting procedure.
When the temperature is below 20°F (-75°C), let
the machine warm up for a minimum of 10 minutes.
5. To stop the engine, set the throttle switch to low
idle, move the PTO switch to the Off position, set
the parking brake, and rotate the ignition key to
Off. Remove the key from the switch to prevent
accidental starting.
Important: Allow engine to idle for 5 minutes
before shutting it off after a full load operation.
Failure to do so may lead to turbo-charger trouble.
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 the operation of the interlock switches
daily and replace any damaged switches before
operating the machine.
The machine has interlock switches in the electrical
system. These switches are designed to stop the engine
when operator gets off of the seat when the traction
pedal is depressed. However, the operator may get off
of the seat while the engine is running, the traction
pedal is in neutral and the parking brake engaged.
To check the operation of the interlock switches,
perform the following procedure:
1. Drive the machine slowly to a large, relatively open
area. Lower the cutting unit, stop the engine, and
apply the parking brake.
2. Sit on the seat and depress the traction pedal. Try
to start the engine. The engine should not crank.
If the engine cranks, there is a malfunction in the
interlock system that should be corrected before
beginning operation.
3. Sit on the seat and start the engine. Rise from the
seat and move the PTO lever to On. The PTO
should not engage. If the PTO engages, there is a
malfunction in the interlock system that should be
corrected before beginning operation.
4. Sit on the seat, engage the parking brake and start
the engine. Move the traction pedal out of the
neutral position. The traction drive should not
function. If the traction drive still functions there is
a malfunction in the interlock system that should be
corrected before beginning operation.
Pushing or Towing the
Machine
In an emergency, the machine can be moved forward by
actuating the bypass valves in the variable displacement
hydraulic pump and pushing or towing the machine.
Do not push or tow the machine for more than 1/4
mile (0.4 km).
Important: Do not push or tow the machine
faster than 2 MPH (3 km/h) because internal
transmission damage may occur. The bypass
valves must be open whenever the machine is
pushed or towed.
1. Raise the hood and locate the bypass valves on the
sides of the pump (Figure 35).
1. Bypass valves (2)
2. To actuate the tow valves, loosen the jam nut on
each bypass valve stem (Figure 35).
Note: Use a 4 mm Allen wrench and a 13 mm box
wrench to make the adjustments.
35
Figure 35
2. Reverse traction pressure
test port (Port MA)