The Safety Interlock System; Driving Forward Or Backward - Toro 74310 Operator's Manual

7. Close the fuel shut-off valve when the machine will not
be in use for a few days, when transporting, or when
the unit is parked inside a building.

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 PTO engagement lever is disengaged.
•
The speed control lever is in the neutral position
The safety interlock system is designed to stop the engine
when 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.
1. Triangles light up when
the interlock components
are in the correct position
2. Hopper up
Testing the Safety Interlock System
Service Interval: Before each use or daily
Figure 18
3. Hour/Voltage display
4. Low voltage indicator light
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, move the
PTO engagement lever to on, and move the speed
control lever to neutral position. Try starting the
engine; the engine should not crank.
2. Sitting on the seat, engage the parking brake and move
the PTO engagement lever to off. Move the speed
control lever out of neutral position. Try starting the
engine; the engine should not crank.
3. Sitting on the seat, disengage the parking brake, move
the PTO engagement lever to off, and move the speed
control lever to neutral position. Try starting the
engine; the engine should not crank.
4. Sitting on the seat, engage the parking brake, move
the PTO engagement lever to off and move the speed
control lever to neutral position. Now start the engine.
While the engine is running, release the parking brake,
engage the PTO engagement lever, and rise slightly
from the seat; the engine should stop.
5. Sitting on the seat, engage the parking brake, move
the PTO engagement lever to off and move the speed
control lever to neutral position. Now start the engine.
Move the speed control lever forward; the engine
should stop.

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
Note: To begin movement (forward or backward) the
operator must be in the seat, the brake lever must be
disengaged (pushed down) before the speed control lever can
be moved forward or the engine will stop.
To stop, pull the speed control lever to the neutral position.
1. Start the engine.
2. Release the parking brake; refer to Releasing the
Parking Brake (page 16).
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