Toro Wheel Horse 520xi Operator's Manual page 15

Before deactivating this interlock, ensure that there are no
children present on or near the property where you are
using the tractor, and that none are likely to appear while
you are mowing or operating an attachment. Be extra
observant after you have chosen to deactivate the
interlock because the sound of the tractor's engine might
prevent you from being aware that a child or bystander
has entered the area.
If you are certain that you can safely mow or operate an
attachment in reverse, complete the following procedure:
1. Engage the PTO.
2. Insert the KeyChoice key into the KeyChoice switch
(Fig. 15).
Note: Do not insert the KeyChoice key unless it is
absolutely necessary to mow or operate an attachment in
reverse. Always remove both the ignition and the
KeyChoice keys and put them in a safe place out of the
reach of children when leaving the unit unattended.
Figure 15
1. Reverse interlock key
3. Turn the KeyChoice key clockwise until it stops and
release it.
A red light illuminates on the front console (Fig. 11) to
serve as a reminder that the interlock has been
deactivated.
4. Remove the KeyChoice key.
Once you deactivate the interlock, it stays in this
mode—with your mower blade or PTO powered
attachment operating whenever you back up—and the
console light stays on until you either disengage the PTO
or turn off the engine.
Testing the Safety Interlock System
Test the safety interlock system each time before you use
the machine. Do not operate the machine if the safety
system is not functioning properly. If the safety system
does not operate as described below, have an Authorized
Service Dealer repair the safety system immediately.
1. Fully press the brake pedal. Pull the PTO switch to the
On position.
2. Turn the ignition key to the Start position. The starter
should not crank.
3. Push the PTO switch to the Off position and release
the brake pedal.
4. Turn the ignition key to the Start position. The starter
should not crank.
5. Fully press the brake pedal and set the parking brake.
Push the PTO switch to the Off position and rise from
the seat.
6. Turn the ignition key to the Start position. The starter
should not crank.
1 7. Fully press the brake pedal and set the parking brake.
Push the PTO switch to the Off position and start the
engine.
8. With the engine running, release the parking brake and
m–4260
rise slightly from the seat; the engine should stop.
9. Fully press the brake pedal, set the parking brake, push
the PTO switch to the Off position, and start the
engine.
10. Pull the PTO switch to the On position and rise
slightly from the seat; the engine should stop.
11. With the parking brake released, turn the ignition key
to the Run position without starting the engine.
12. Pull the PTO switch to the On position; you should
hear an audible click indicating that the PTO is
activated and the PTO light should illuminate.
13. Move the foot pedal to reverse; you should hear an
audible click, indicating that the PTO is deactivated,
and the PTO light should turn off.
14. With the parking brake released, turn the ignition key
to the Run position without starting the engine.
15. Pull the PTO switch to the On position.
16. Turn the KeyChoice key and release it. The
Operating–in–Reverse warning light should illuminate.
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