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Using the Safety-Interlock
System
CAUTION
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 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 you move the traction controls from the locked
position with the parking brake engaged or if you rise from
the seat when the PTO is engaged.
The hour meter has symbols to notify you when the
interlock component is in the correct position. When the
component is in the correct position, a triangle lights up in
the corresponding square.
G009181
Figure 22
1. Triangles light up when the interlock components are in the
correct position.
Testing the Safety-Interlock System
Service Interval: Before each use or daily
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
2. Sit on the seat, engage the parking brake and move the
3. Sit on the seat, engage the parking brake, move the
-
EUTRAL
LOCK
4. Sit on the seat, engage the parking brake, move the
5. Sit on the seat, disengage the parking brake, move the
1
23
blade-control switch (PTO) to the O
starting the engine; the engine should not crank.
blade-control switch (PTO) to the O
either motion-control lever (out of the N
position). Try starting the engine; the engine should
not crank. Repeat for the other control lever.
blade-control switch (PTO) to the O
move the motion-control levers to the N
position. Start the engine. While the engine is running,
release the parking brake, engage the blade-control
switch (PTO), and rise slightly from the seat; the engine
should shut off.
blade-control switch (PTO) to the O
move the motion-control levers to N
position. Start the engine. While the engine is running,
center either motion-control lever and move it forward
or reverse; the engine should shut off. Repeat for the
other motion-control lever.
blade-control switch (PTO) to the O
move the motion-control levers to N
position. Try starting the engine; the engine should
not crank.
position. Try
N
position. Move
FF
-
EUTRAL
LOCK
position, and
FF
-
EUTRAL
LOCK
position, and
FF
-
EUTRAL
LOCK
position, and
FF
-
EUTRAL
LOCK
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