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Using the Safety-Interlock
System
WARNING
If the 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 following occurs:
•
The parking brake is engaged.
•
The blade-control switch (PTO) is disengaged.
•
The motion-control levers are in the N
position.
The safety-interlock system also is designed to shut
off the engine when the motion-control levers are
moved from the N
EUTRAL
parking brake engaged or if you rise from the seat
when the PTO is engaged.
The hour meter has indicators to notify the user when
the interlock component is in the correct position.
When the component is in the correct position, an
indicator displays on the screen.
Figure 9
1. Indicators display when the interlock components are in the
correct position
Testing the Safety-Interlock
System
Service Interval: Before each use or daily
All manuals and user guides at all-guidesbox.com
-
EUTRAL
LOCK
-
position with the
LOCK
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.
Sit on the seat, engage the parking brake, and
move the blade-control switch (PTO) to the O
position. Try starting the engine; the engine
should not start.
2.
Sit on the seat, engage the parking brake, and
move the blade-control switch (PTO) to the O
position. Move either motion-control lever out
of the N
EUTRAL
engine; the engine should not start. Repeat for
the other control lever.
3.
Sit on the seat, engage the parking brake,
move the blade-control switch (PTO) to the O
position, and move the motion-control levers
to the N
EUTRAL
engine. While the engine is running, disengage
the parking brake, engage the blade-control
switch (PTO), and rise slightly from the seat; the
engine should shut off.
4.
Sit on the seat, engage the parking brake,
move the blade-control switch (PTO) to the O
position, and move the motion-control levers
to the N
EUTRAL
engine. While the engine is running, center
either motion control and move (forward or
reverse); the engine should shut off. Repeat for
other motion control.
5.
Sit on the seat, disengage the parking brake,
move the blade-control switch (PTO) to the O
position, and move the motion-control levers
to the N
EUTRAL
engine; the engine should not start.
g187670
18
-
position. Try starting the
LOCK
-
position. Now start the
LOCK
-
position. Now start the
LOCK
-
position. Try starting the
LOCK
N
FF
FF
FF
FF
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