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1. Stop pin
4. Adjust the anti-scalp rollers and skids as required.
The Safety Interlock System
CAUTION
If the 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.
Understanding the Safety Interlock
System
The safety interlock system is designed to prevent the engine
from starting unless:
•
You are sitting on the seat or the parking brake is engaged.
•
The power take-off (PTO) is disengaged.
•
The traction pedal is in the neutral position
•
The engine temperature is below the maximum operating
temperature.
The safety interlock system also is designed to stop the engine
when the traction pedal is moved from the neutral position
with the parking brake engaged. If you rise from the seat
when the PTO is engaged there is a 1-second delay and then
the engine stops.
Testing the Safety Interlock System
Service Interval: Before each use or daily
Figure 15
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. Sitting on the seat, engage the parking brake and move
the PTO to on. Start the engine; the engine should
not crank.
2. Sitting on the seat, engage the parking brake and move
the PTO to off. Engage the traction pedal. Start the
engine; the engine should not crank.
3. Sitting on the seat, engage the parking brake, move
the PTO switch to off and allow the traction pedal
to return to the neutral position. Start the engine.
While the engine is running, release the parking brake,
engage the PTO and rise slightly from the seat. On
2-wheel drive machines, the engine should stop within
2 seconds. On 4-wheel drive machines, the mower
deck shuts off and the engine continues to run.
4. Without an operator on the seat, engage the parking
brake, move the PTO switch to off, and move the
traction pedal to the Neutral position. Start the engine.
While the engine is running, engage the traction pedal;
the engine should stop within 2 seconds.
5. Without an operator on the seat, disengage the parking
brake, move the PTO switch to off, and allow the
traction pedal to return to the Meutral position. Try
starting the engine; the engine should not crank.
Using the Standard Control Module
(SCM) to Diagnose System Problems
2 wheel drive models only
The machine is equipped with a standard control module
(SCM) monitoring system that tracks the function of various
key systems. The SCM is located under the seat.
On the face of the SCM are 11 LEDs that illuminate to
indicate various system conditions. Seven of these lights can
be used by the operator for system diagnosis. Refer to
16
for a description of what each light means. For details on
using the rest of the SCM functions, refer to the Service Manual
available through your Authorized Toro Distributor.
21
Figure
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