Using The Safety-Interlock System - Toro 74534 Operator's Manual

Using the Safety-Interlock
System
CAUTION
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 mower
blades from rotating unless:
•
The right side motion-control lever is moved to the
center, unlocked position.
•
The blade-control switch (PTO) is pulled on.
The safety-interlock system is designed to stop the mower
blades if you move or release the right side motion-control
lever into the neutral-lock position.
The hour meter has symbols to notify the user when the
interlock component is in the correct position. When the
component is in the correct position, a triangle will light
up in the corresponding square.
Figure 19
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
2. Set the parking brake.
3. Move the right side motion-control lever to the center,
unlocked position.
Note: The blades should not rotate.
4. Move the motion-control levers forward.
Note: The engine should stop running.
5. Start the engine and release the parking brake.
6. Move the right side motion-control lever to the center,
unlocked position.
7. Continue holding the right side motion-control lever
in the center, unlocked position, pull up on the
blade-control switch (PTO), and release.
Note: The clutch should engage and the mower
blades rotate.
8. Move or release the right side motion-control lever into
the neutral-lock position.
Note: The blades should stop rotating and the engine
continues to run.
9. Push the blade-control switch down and move the
right side motion-control lever to the center, unlocked
position.
10. Continue holding the right side motion-control lever
in the center, unlocked position, pull up on the
blade-control switch (PTO), and release.
Note: The clutch should engage and the mower
blades rotate.
11. Push the blade-control switch (PTO) down to the Off
position.
Note: The blades should stop rotating.
12. With the engine running, pull up the blade-control
switch (PTO) and release it without holding right side
motion-control lever to the center, unlocked position.
Note: The blades should not rotate.
19
Starting the Engine (page 17).