The Safety Interlock System - Toro Z255 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:
You are sitting on the seat
The parking brake is "ENGAGED"
The power take off (PTO) is disengaged "OFF"
The motion control levers are in neutral locked
position
The safety interlock system also is designed to stop
the engine when the traction controls are moved from
the locked position with the parking brake
"ENGAGED" or if you rise from the seat when the
PTO is "ON" 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. Sitting on the seat, "ENGAGE" parking brake
and move PTO "ON". Try starting the engine;
the engine should not crank.
2. Sitting on the seat, "ENGAGE" parking brake
and move PTO "OFF". Move either motion
control lever (out of neutral locked position). Try
starting the engine; the engine should not crank.
Repeat for other control lever.
3. Sitting on the seat, "ENGAGE" parking brake,
move PTO switch "OFF" and move the motion
control levers to neutral lock position. Now start
the engine. While the engine is running, release
the parking brake, engage the PTO and rise
slightly from the seat; the engine should stop.
4. Sitting on the seat, "ENGAGE" parking brake,
move PTO switch "OFF" and move the motion
control levers to neutral lock position. Now start
the engine. While the engine is running, center
either motion control and move (forward or
reverse); the engine should stop.
5. Sitting on the seat, "DISENGAGE" parking
brake, move PTO switch "OFF" and move the
motion control levers to neutral lock position.
Try starting the engine; the engine should not
crank.
Operation
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