Adjusting The Lift Arm Counterbalance; Adjusting The Lift Arm Turn Around Position - Toro 03780 Operator's Manual

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.
The machine has interlock switches in the electrical system.
These switches are designed to stop the engine when operator
gets off of the seat when the traction pedal is depressed.
However, the operator may get off of the seat while the engine
is running and the traction pedal is in neutral. Although the
engine will continue to run if the PTO switch is disengaged
and the traction pedal is released, it is strongly recommended
that the engine be stopped before rising from the seat.
To check the operation of the interlock switches, perform
the following procedure:
1. Drive the machine slowly to a large, relatively open
area. Lower the cutting unit, stop the engine, and apply
the parking brake.
2. Sit on the seat and depress the traction pedal. Try to
start the engine. The engine should not crank. If the
engine cranks, there is a malfunction in the interlock
system that should be corrected before beginning
operation.
3. Sit on the seat and start the engine. Rise from the seat
and move the PTO switch to On. The PTO should
not engage. If the PTO engages, there is a malfunction
in the interlock system that should be corrected before
beginning operation.
4. Sit on the seat, engage the parking brake and start the
engine. Move the traction pedal out of the neutral
position. The engine should kill. If the engine does not
kill, there is a malfunction in the interlock system that
should be corrected before beginning operation.
Adjusting the Lift Arm
Counterbalance
You can adjust the counterbalance on the rear cutting unit
lift arms to compensate for different turf conditions and to
maintain a uniform height-of-cut in the rough conditions or
in areas of thatch build up.
You can adjust each counterbalance spring to one of
four settings. Each increment increases or decreases
counterbalance on the cutting unit by 2.3 kg (5 lb). The
springs can be positioned on the back side of the spring
actuator to remove all counter balance (forth position).
1. Position the machine on a level surface, lower the
cutting units, stop the engine, engage the parking
brakes, and remove the key from ignition switch.
2. Insert a tube or similar object onto the long spring
end to relieve the spring tension during the adjustment
(Figure 36).
CAUTION
The springs are under tension.
Use caution when adjusting them.
3. While relieving the spring tension, remove the bolt
and locknut securing the spring actuator to the bracket
(Figure 36).
1. Spring
4. Move the spring actuator to the desired hole location
and secure with locknut.
5. Repeat the procedure on the remaining spring.
Adjusting the Lift Arm Turn
Around Position
1. Position the machine on a level surface, lower the
cutting units, stop the engine, engage the parking
brakes, and remove the key from ignition switch.
2. The lift arm switch is located behind the front right
lift arm (Figure 37).
33
Figure 36
2. Spring actuator