Understanding The Safety Interlock System; Testing The Safety Interlock System - Toro 72211 Operator's Manual

Understanding the Safety Interlock
System
The safety interlock system is designed to prevent the
engine from starting unless:
•
You are sitting on the seat.
•
The brake pedal is depressed.
•
The power take off (PTO) is off.
•
The hydro control pedal is in the neutral position.
The safety interlock system is designed to stop the
engine if:
•
You rise from the seat when the brake pedal is
released
•
You rise from the seat when the power take off
(PTO) is on.
The safety interlock system is designed to stop the
power take off (PTO) if:
You shift into reverse with the power take off
(PTO) engaged.

Testing the Safety Interlock System

Test the safety interlock system before you use the
machine each time. If the safety system does not
operate as described below, have an Authorized Service
Dealer repair the safety system immediately.
1. Set the parking brake. Move the power take off
(PTO) to the On position. Now turn the ignition
key to start while sitting on the seat; the engine
should not crank.
2. Push the power take off (PTO) to the off position
and release the parking brake. Now turn the
ignition key to the Start position while sitting on
the seat; the engine should not crank.
3. Set the parking brake and move the power take
off (PTO) to the Off position. Rise from the seat
and turn the ignition key to the Start position; the
engine should not crank.
4. Set the parking brake and move the power take off
(PTO) to the Off position. While sitting in the
seat, start the engine. While the engine is running,
release the parking brake and rise slightly from the
seat; the engine should stop.
5. Set the parking brake and move the power take off
(PTO) to the Off position. While sitting in the seat,
start the engine. While the engine is running, move
the power take off (PTO) to the On position and
rise slightly from the seat; the engine should stop.
6. With the parking brake released, turn the ignition
key to the run position without starting the engine.
Pull the PTO switch to on. You should hear an
audible click indicating the PTO is activated and
the PTO light will illuminate. Move the foot
pedal to reverse. You should hear an audible click
indicating the PTO is deactivated and the PTO
light should turn off.
7. With the parking brake released, turn the ignition
switch to RUN without starting the engine. Pull the
PTO switch to on. Turn the KeyChoice® key and
release. The Operating-in-Reverse warning light
should illuminate. Move the foot pedal to reverse.
The PTO and PTO light on the dash should
remain on. Push the PTO switch to off. The PTO
light and the Operating-in-Reverse warning light
should turn off.
Setting the KeyChoice® Switch to
Operate in Reverse
An interlock feature on the tractor prevents the power
take off (PTO) from operating when backing up. If
you shift into reverse with the PTO engaged (i.e.,
with mower blades or other attachment running), the
PTO will disengage. Do not mow in reverse unless
absolutely necessary.
If you need to use the PTO while backing up, you can
turn off this interlock feature using the KeyChoice®
switch located near the seat bracket (Figure 18 ).
You could back over a child or bystander while
the mower blade(s) or other attachment is
engaged and cause serious injury or death.
•
Do not mow in reverse unless absolutely
necessary.
•
Do not insert the KeyChoice® key unless it
is absolutely necessary.
•
Always look backward and down before
backing up.
•
Use the KeyChoice® switch only if you are
certain no children or other bystanders will
enter the mowing area.
•
Be very observant after deactivating the
interlock because the sound of the engine
may prevent you from noticing that a child
or bystander has entered the work area.
•
Always remove both the ignition and
KeyChoice® keys and put them in a
safe place out of the reach of children or
unauthorized users when leaving the unit
unattended.
1. Engage the PTO.
2. Insert the KeyChoice® key into the switch
(Figure 18 ).
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