The Safety Interlock System; Driving Forward Or Backward - Toro 74450TE Z400 Z Master Operator's Manual

The Safety Interlock System

CAUTION
If 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:
• The parking brake is engaged.
• The power take off (PTO) is disengaged.
• The motion control levers are in the 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 engaged.
The hour meter has symbols to notify the user when the
interlock component is in the correct position. When
the component is in the correct position, a triangle will
light up in the corresponding square.
Figure 17
1. Triangles light up when the interlock components are in the
correct position
Testing the Safety Interlock System
Service Interval: Before each use or daily
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. Try starting the engine; the
engine should not crank.
2. Sitting on the seat, engage the parking brake and
move the PTO to 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 the parking brake,
move the PTO switch to 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 the parking brake, move
the PTO switch to 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. Repeat for other motion control.
5. Sitting on the seat, disengage the parking brake,
move the PTO switch to off and move the motion
control levers to neutral lock position. Try starting
the engine; the engine should not crank.

Driving Forward or Backward

The throttle control regulates the engine speed as
measured in RPM (revolutions per minute). Place
the throttle control in the fast position for best
performance. Always operate in the full throttle
position when mowing.
CAUTION
Machine can spin very rapidly. Operator may lose
control of machine and cause personal injury or
damage to machine.
• Use caution when making turns.
• Slow the machine down before making sharp
turns.
Driving Forward
1. Release the parking brake; refer to Releasing the
Parking Brake in Operation (page 14).
2. Move the levers to the center, un-locked position.
3. To go forward, slowly push the motion control
levers forward (Figure 18).
Note: The engine will kill if the traction control
levers are moved with the parking brake engaged.
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