Toro 74670 Operator's Manual page 18

Understanding the Safety-Interlock
System
WARNING
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 safety-interlock system is designed for the following:
•
To prevent the engine from starting unless the traction
pedal is in the neutral position.
•
To automatically ensure that the parking brake is engaged
and the PTO is off when starting.
•
To stop the engine whenever the traction pedal is not in
the neutral position and you rise from the seat.
•
To automatically engage the parking brake and disengage
the PTO, when you rise out of the seat with the traction
pedal in the neutral position.
•
To stop the engine whenever the parking brake is not
engaged and you rise from the seat.
Testing the Safety-interlock System
1. While sitting on the seat, move the blade-control
switch to O .
FF
2. Turn the ignition key to the S
Note: The starter should crank.
3. Push the SmartPark switch to the O
Note: The brake should disengage, and the brake light
should turn off.
4. With brake disengaged and traction pedal in neutral,
turn the ignition switch to the S
Note: The brake should automatically engage, the
engine should crank, and the brake light will turn on.
5. Engage the PTO by pulling up on the blade-control
switch.
6. Ensure the traction pedal is in neutral and turn ignition
switch to the S
TART
Note: The PTO should disengage and the engine
should crank.
7. Ensure the traction control pedal is in the neutral
position and start the engine.
8. Raise from the seat.
position.
TART
position.
FF
position.
TART
position.
Note: The engine should remain running.
9. Return to the seat, disengage the parking brake by
pushing the SmartPark switch to the O
Note: The engine should remain running.
10. Raise from the seat.
Note: The brake should automatically engage and the
engine should remain running.
11. Return to the seat, engage the blades by pulling up on
the blade-control switch.
12. Raise from the seat.
Note: The blades should disengage and the engine
should remain running.
13. Return to the seat, and pull the blade control switch up.
Note: The blades should engage.
14. Push down on the blade-control switch.
Note: The blades should disengage.
15. Engage the blades by pulling up on the blade-control
switch.
16. Move traction pedal to reverse.
Note: The blades should disengage.
17. Engage the blades by pulling up on the blade-control
switch.
18. Turn the Key Choice switch to O
Note: The operating in reverse light should illuminate.
19. Move the traction pedal to reverse.
Note: The blades should remain engaged.
20. Push the PTO switch to the O
Note: The blades should turn off and the reverse
warning light should turn off.
21. Engage the parking brake by pushing SmartPark switch
to the O position.
N
Note: The brake should engage and the brake light
should be on.
22. Push and release the traction pedal in either the forward
or reverse direction.
Note: The brake should disengage and the brake light
should turn off.
23. Raise from the seat, and push the traction pedal to
either the forward or reverse direction.
Note: The engine should kill.
18
position.
FF
and release.
N
position.
FF