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Understanding the Safety Interlock
System
The safety interlock system is designed to prevent the
mower from starting unless:
The blade control switch (PTO) is off.
The speed control lever is in neutral.
The safety interlock system is designed to kill the engine
when:
The Operator Presence Control (OPC) levers are
released while the speed control is out of neutral
position and/or the mower is engaged.
The speed control lever is shifted out of neutral
without holding OPC levers.
The blade control switch (PTO) is pulled on without
holding the OPC levers.
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, have an Authorized Service Dealer repair the
safety system immediately.
1. Set the neutral locks and place speed control lever in
neutral. Start the engine; refer to Starting and Stopping
the Engine, page 22.
2. Without holding the Operator Presence Control (OPC)
levers, pull the blade control switch (PTO) up. The
engine should kill.
3. With engine running, hold down the OPC levers. Pull
the blade control switch (PTO) up. The clutch should
engage and the mower blades begin rotating.
4. Release the OPC levers. The engine should kill.
5. With the engine running, move the speed control lever
forward. Release the OPC levers. The engine should
kill.
6. If all the above conditions are not met have an
Authorized Service Dealer repair the safety system
immediately.
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.
Forward
1. Release the parking brake; refer to Releasing the
Parking Brake, page 23.
2. To go forward, move the speed control lever to desired
speed.
3. Release the neutral lock. Refer to Releasing the
Neutral Lock on page 22.
4. Slowly release the drive levers to move forward
(Fig. 17).
To go straight, release drive levers equally (Fig. 17).
To turn, squeeze the drive lever on the side and direction
you want to turn (Fig. 17).
Figure 17
1. Drive lever
Backward
1. Release the neutral lock. Refer to Releasing the
Neutral Locks on page 22.
2. Slowly squeeze the drive levers back to the grips
together to move rearward (Fig. 17).
Bringing Machine to Neutral
Position
Always set the neutral lock when you stop the machine.
Set the parking brake if it is left unattended.
1. Squeeze the drive levers back toward the grips to
neutral position.
2. Set the neutral locks. Refer to Operating Neutral Locks
on page 22.
3. Move speed control lever to neutral position.
Stopping the Machine
1. To stop the machine, squeeze the drive levers to the
neutral position.
2. Rotate the neutral locks into the neutral lock position.
Refer to Operating Neutral Locks on page 22.
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2. Speed control lever
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