The Safety Interlock System; Instruments - Toro 74191 Operator's Manual

The Safety Interlock System

Understanding the Safety Interlock
System
The safety interlock system is designed to prevent the
engine from starting unless:
The parking brake is "SET"
The power take off (PTO) is disengaged "OFF"
The motion control levers are in neutral
The safety interlock system also is designed to stop
the engine when:
The motion control levers are moved out of
neutral with the parking brake on "SET"
You rise from the seat when the power take off
(PTO) is "ON" or the motion control levers are not in
neutral
The motion control levers are moved out of
neutral or PTO is engaged with the hopper tilted up
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 and move power take
off (PTO) to "ON". Try starting the engine; the
engine should not crank.
2. "SET" the parking brake and move power take
off (PTO) to "OFF". Move one then the other
motion control lever forward or reverse. Try
starting the engine; the engine should not crank.
3. "SET" the parking brake, move power take off
(PTO) to "OFF" and hold the motion control
levers in neutral. Now start the engine. While the
engine is running engage the power take off
(PTO) and rise slightly from the seat; the engine
should stop.
4. "SET" the parking brake, move power take off
(PTO) to "OFF" and hold the motion control
levers in neutral. Now start the engine. While the
engine is running, move the motion control
levers forward or reverse; the engine should
stop.
5. Tilt the hopper up, "SET" the parking brake,
move power take off (PTO) to "OFF" and hold
the motion control levers in neutral. Now start
the engine. While the engine is running, move
the motion control levers forward or reverse; the
engine should stop.

Instruments

Hour Meter
The hour meter records the number of hours the
engine has operated. It operates when the engine is
running. Use these times for scheduling regular
maintenance.
Figure 8
1. Hour meter
Operation
1
m–2717
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