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 mower
blades from rotating unless you do 1 of the following:
•
Move either motion-control lever to the center, unlocked
position.
•
Pull the blade-control switch (PTO) to the O
N
position.
The safety-interlock system is designed to stop the mower
blades if you move or release both motion-control levers
into the N
EUTRAL
-
LOCK
position.
The hour meter has symbols to notify the user when each
interlock component is in the correct position. When the
component is in the correct position, a triangle lights up
in the corresponding square (
).
Figure 18
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.
Note:
If the safety system does not operate as described
below, have an Authorized Service Dealer repair the safety
system immediately.
1.
Start the engine; refer to
Starting the Engine (page 18)
.
2.
Move the motion-control levers to the center, unlocked
position.
Note:
The blades should not rotate and the engine
should stop running.
3.
Start the engine and release the parking brake.
4.
Move either motion-control lever to the center,
unlocked position.
5.
Continue holding the motion-control lever in the
center, unlocked position, pull up on the blade-control
switch (PTO), and release the switch.
Note:
The clutch should engage and the mower
blades rotate.
6.
Move or release the motion-control levers into the
N
EUTRAL
-
LOCK
position.
Note:
The blades should stop rotating and the engine
should continue to run.
7.
Push the blade-control switch down and move either
motion-control lever to the center, unlocked position.
8.
Continue holding the motion-control lever in the
center, unlocked position, pull up on the blade-control
switch (PTO), and release the switch.
Note:
The clutch should engage and the mower
blades should rotate.
9.
Push the blade-control switch (PTO) down to the O
FF
position.
Note:
The blades should stop rotating.
10.
With the engine running, pull up the blade-control
switch (PTO) and release it without holding either
motion-control lever to the center, unlocked position.
Note:
The blades should not rotate.
WARNING
The operator platform is heavy and may cause
injury when lowering and raising the operator
platform. Carefully lower or raise the operator
platform, as suddenly dropping it could injure you.
•
Do not put your hands or fingers in the
platform-pivot area when lowering or raising the
operator platform.
•
Make sure that the platform is supported when
you pull the latch pin out.
•
Make sure that the latch secures the platform
when folding it up. Push it tight against the
cushion for the latch pin to lock into place.
•
Keep bystanders away when raising or lowering
the platform.
Operating the Platform
You can use the machine with the platform in the up or down
position. It is your preference on which position to use.
19
Summary of Contents for GrandStand 74504
Page 58: ...Schematics Electrical Schematic Rev A 58 ...
Page 59: ...Notes 59 ...
