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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 takeoff (PTO) is disengaged.
• The motion control levers are in the neutral lock
position.
The safety interlock system is also designed to stop the
engine when you move the traction controls with the
parking brake is engaged or when you rise from the seat
while the PTO is 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
it immediately.
1. While sitting on the seat, engage the parking brake,
engage the PTO, and try to start the engine; the engine
should not crank.
2. While sitting on the seat, engage the parking brake,
disengage the PTO, and move either of the motion
control levers (forward or reverse). Then try starting the
engine; the engine should not crank. Repeat for the
other motion control lever.
3. While sitting on the seat, engage the parking brake,
disengage the PTO, lock the motion control levers in
neutral, and 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. While sitting on the seat, engage the parking brake,
disengage the PTO, lock the motion control levers in
neutral, and start the engine. While the engine is
running, center the motion controls and move (forward
or reverse); the engine should stop.
5. While sitting on the seat, disengage the parking brake,
disengage the PTO, 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). Always operate the
throttle control in the Fast position for best performance.
Caution
The machine can spin very rapidly. The operator
may lose control of the machine and cause
personal injury or damage to the machine.
• Use caution when turning the machine.
• Slow the machine down before making sharp
turns.
Driving Forward
1. Release the parking brake; refer to Releasing the
Parking Brake on page 17.
2. Move the levers to the center, unlocked position.
3. To go forward, slowly push the motion control levers
forward (Fig. 16).
3
4
1. Motion control
lever—neutral lock
position
Note: The engine will stop if you move the traction control
levers while the parking brake is engaged.
Driving Backward
1. Move the levers to the center, unlocked position.
2. To go backward, slowly pull the motion control levers
rearward (Fig. 16).
19
2
1
m–2715
Figure 16
2. Center unlock position
3. Forward
4. Backward
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