Understanding The Safety Interlock System; Testing The Safety Interlock System - Toro 72200 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 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 (Fig. 6).
Danger
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.
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