Checking The Interlock Switches; Adjusting The Lift Arm Counterbalance - Toro 03781 Operator's Manual

1. Remove your foot from the traction pedal and ensure
that it is in neutral. Ensure that the parking brake is set.
2. Move the throttle control to the low idle position.
3. Turn the ignition key to the Run position. The glow
indicator will light.
4. When the glow indicator dims, turn the ignition key to
the Start position. Release the key immediately when
the engine starts and allow it to return to the Run
position. Adjust the engine speed.
Important: Do not run the starter motor more
than 15 seconds at a time or premature starter
failure may result. If the engine fails to start after 15
seconds, turn the key to the Off position, recheck
the controls and procedures, wait 15 additional
seconds, and repeat the starting procedure.
When the temperature is less than -7°C (20°F), the
starter motor can be run for 30 seconds on then 60
seconds off for 2 attempts.
CAUTION
Shut the engine off and wait for all moving
parts to stop before checking for oil leaks,
loose parts, and other malfunctions.
Stopping the Engine
Important: Allow engine to idle for 5 minutes before
shutting it off after a full load operation. This allows the
turbo charger to cool down before shutting the engine
off. Failure to do so may lead to turbo-charger trouble.
Note: Lower cutting units to the ground whenever machine
is parked. This relieves the hydraulic load from the system,
prevents wear on system parts and also prevents accidental
lowering of the cutting units.
1. Return the engine speed to low idle.
2. Move the PTO switch to the Off position.
3. Set the parking brake.
4. Rotate the ignition key to Off.
5. Remove the key from the switch to prevent accidental
starting.
Checking the Interlock
Switches
Service Interval: Before each use or daily
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
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