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1. Operator Presence
Control (OPC) lever
The Safety Interlock System
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 blade control (PTO) lever is disengaged.
• The machine is shifted into the Neutral position.
• The ignition key is in the Run position.
The safety interlock system is designed to stop the
engine when:
• The Operator Presence Control (OPC) levers are
released when the transmission or the blades are
engaged;
• The ignition key is turned to the Off position.
Figure 8
2. Power take off lever (PTO)
• The machine is shifted into gear without holding
the OPC levers.
• The blade control (PTO) lever is engaged 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 parking brakes, move the shift lever into the
Neutral position, disengage the blade control (PTO)
lever and place the throttle forward.
2. Start the engine; refer to Starting the Engine.
3. Without holding the Operator Presence Control
(OPC) levers, engage the blade control (PTO) lever.
The engine should stop.
4. Disengage the blade control (PTO) lever.
5. With the engine running, hold down the OPC levers
and engage the blade control (PTO) lever. The
mower belt should engage and the mower blades
begin rotating.
6. Release the OPC levers. The engine should stop.
7. With the engine running, move the shift lever into
gear and release the OPC levers. The engine should
stop.
8. With the engine running, turn the ignition key to
the off position. The engine should stop.
9. 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). Move
the throttle control into the Fast position for the best
mowing performance.
Driving Forward
1. Ensure that the parking brakes are engaged.
2. Squeeze the OPC levers against the handles.
3. Move the shift lever into a forward gear.
4. Release the parking brakes; refer to Releasing the
Parking Brakes and Neutral Locks.
5. Slowly release the drive levers.
Note: To go straight, release the drive levers
equally. To turn, squeeze the drive lever on the same
side as the direction you want to turn.
14
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