Engine Cooling Fan Operation; Checking The Interlock Switches; Pushing Or Towing The Machine - Toro 30412 Groundsmaster 4000-D Operator's Manual

start after 15 seconds, turn the key to the Off
position, recheck the controls and procedures,
wait 15 additional seconds, and repeat the
starting procedure.
When the temperature is less than 20°F (-75C),
preheat glow plugs twice prior to initial cranking
attempt. The starter motor can be run for 30
seconds on then 60 seconds off for 2 attempts.
5. To stop the engine, move the throttle control
backward to the Slow position, move the PTO lever
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.

Engine Cooling Fan Operation

The engine cooling fan switch has three positions for
controlling the operation of the fan. The three positions
are R, Auto and F. The fan has the ability to reverse
to blow debris off of the rear screen. Under normal
operating conditions , the switch should be in the Auto
position. In Auto, the fan speed will be controlled by
the coolant temperature and will automatically reverse
to blow debris off of the rear screen. A reverse cycle
is automatically initiated when either the coolant or
hydraulic temperature reaches a certain point. By
pressing the fan switch forward into the R position, the
fan will complete a manually initiated reverse cycle. This
position is spring loaded meaning that the switch will
return to the Auto position after being pressed into the
R position. By pressing the switch backwards into the
F position, the reversing function of the fan is turned
off. The fan will only run in the forward direction with
its speed being controlled by the coolant temperature.
This position would be preferred when it is undesirable
to blow debris out of the back of the machine.
Checking the Interlock
Switches
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 the 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 and the traction
pedal is in neutral. Although the engine will continue
to run if the PTO lever is disengaged and the traction
pedal is released, it is strongly recommended that the
engine be stopped before rising from the seat.
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 engine should kill. If the
engine does not kill, 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 valve in the variable displacement
hydraulic pump and pushing or towing the machine.
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