The Safety Interlock System; Driving Forward Or Backward - Toro 74179 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:
You are sitting on the seat.
The parking brake is engaged.
The power take off (PTO) is disengaged.
The motion control levers are in the neutral lock
position.
The safety interlock system also is designed to stop the
engine when the traction controls are moved with the
parking brake on engaged or if you rise from the seat when
the PTO is on or 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 the parking brake, and move
the PTO 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
(forward or reverse). Try starting the engine; the engine
should not crank. Repeat for the other motion control
lever.
3. Sitting on the seat, engage the parking brake, move the
PTO to Off, and lock the motion control levers in
neutral. 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 to Off, and lock the motion control levers in
neutral. Now start the engine. While the engine is
running, center the motion controls and move (forward
or reverse); the engine should stop.
5. Sitting on the seat, disengage the parking brake, move
the PTO switch to Off, and move the motion control
levers to the 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.
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, page 18.
2. Move the levers to the center, unlocked position.
3. To go forward, slowly push the motion control levers
forward (Fig. 18).
Note: The engine will kill if the traction control levers are
moved with the parking brake engaged.
To go straight, apply equal pressure to both motion control
levers (Fig. 18).
To turn, release pressure on the motion control lever toward
the direction you want to turn (Fig. 18).
20