Checking The Interlock System; Pushing Or Towing The Machine - Toro 30344 Operator's Manual

Checking the Interlock System

The purpose of the safety interlock system is to prevent the
engine from cranking or starting unless the traction pedal
is in neutral and the PTO switch is in the Off position. In
addition, the engine will stop when:
•
the PTO control is engaged with the operator off the seat;
•
the traction pedal is depressed with the operator off the
seat;
•
the traction pedal depressed with the parking brake
engaged.
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.
1. Move PTO switch to Off position and remove foot
from traction pedal so it is fully released.
2. Rotate the ignition key to Start. Engine should crank.
If engine cranks, proceed to step 3. If engine does
not crank, there may be a malfunction in the interlock
system.
3. Raise off the seat and engage the PTO switch while
the engine is running. The engine should stop within
2 seconds. If engine stops, the switch is operating
correctly; thus, proceed to step 4. If engine does not
stop, there is a malfunction in the interlock system.
4. Raise off the seat and depress the traction pedal while
engine is running and the PTO lever is disengaged.
The engine should stop within 2 seconds. If engine
stops, the switch is operating correctly; thus, proceed
to step 5 If engine does not stop, there is a malfunction
in the interlock system.
5. Engage the parking brake. Depress the traction
pedal while engine is running and the PTO lever is
disengaged. The engine should stop within 2 seconds.
If engine stops, the switch is operating correctly; thus,
continue operation. If engine does not stop, there is a
malfunction in the interlock system.
Pushing or Towing the
Machine
In an emergency, the machine can be pushed or towed for a
very short distance. However, Toro does not recommend this
as standard procedure.
Important: Do not push or tow the machine faster than
2 to 3 mph because the transmission may be damaged.
If the machine must be moved a considerable distance,
transport it on a truck or trailer. Whenever the machine
is pushed or towed, the by-pass valve must be open.
1. Loosen the knob and remove the access cover at the
rear of the seat mounting plate (Figure 32).
1. Access cover knob
2. Press and hold the pins located in the center of the 2
check valve assemblies in the top of the transmission
(Figure 33) while pushing or towing the machine.
Figure 33 is shown with seat and seat mounting plate
removed.
1. Transmission check valve by-pass pins (2)
3. Start the engine momentarily after the repairs are
completed and make sure the pins are in the full
disengaged (fully up) position.
Important: Running the machine with the
by-pass valve open will cause the transmission to
overheat.
4. Install the access cover.
33
Figure 32
Figure 33