JLG 120HX Operator Manual - Manual (Page 41)

SECTION 3 - USER RESPONSIBILITIES AND MACHINE CONTROL
3120818 – JLG Lift – 3-11
Platform Station.
NOTE: For engine starting, the footswitch must be in the
released (up) position. Footswitch must be actuated
in order for controls to function.
1. Footswitch.
This feature makes it necessary to depress the foot-
switch to allow operation of the controls.
TO AVOID SERIOUS INJURY, DO NOT REMOVE, MODIFY OR DIS-
ABLE THE FOOTSWITCH BY BLOCKING OR ANY OTHER MEANS.
THE FOOTSWITCH MUST BE ADJUSTED SO FUNCTIONS WILL
OPERATE WHEN THE PEDAL IS APPROXIMATELY AT ITS CEN-
TER OF TRAVEL. IF THE SWITCH OPERATES WITHIN LAST 6.35
MM OF TRAVEL, TOP OR BOTTOM, IT SHOULD BE ADJUSTED.
2. Power/Emergency Stop.
An on-off POWER/EMERGENCY STOP switch and a
separate START push button on the platform con-
sole supply electrical power to the starter solenoid,
when the power switch is pulled out to the “on” posi-
tion and the START button is depressed.
3. Start Button.
The START button is a momentary contact, push-
button switch. With the POWER /EMERGENCY
STOP switch pulled up and the START button
depressed, electrical power is supplied to the start
solenoid.
4. Warning Horn.
A push-type HORN switch, when pressed, supplies
electrical power to activate the horn.
5. Chassis Out of Level Warning Light.
This red indicator lights to indicate that the chassis is
on a slope (over 3 degrees). If illuminated when
boom is raised or extended, retract and lower to
below horizontal then reposition the machine so that
it is level before extending the boom or raising the
boom above horizontal.
IF THE CHASSIS OUT OF LEVEL WARNING LIGHT IS ILLUMI-
NATED WHEN THE BOOM IS RAISED OR EXTENDED, RETRACT
AND LOWER THE PLATFORM TO BELOW HORIZONTAL THEN
REPOSITION THE MACHINE SO IT IS LEVEL BEFORE EXTENDING
BOOM OR RAISING THE BOOM ABOVE HORIZONTAL.
NOTE: LIFT, SWING, and DRIVE control levers or switches
are spring-loaded and will automatically return to the
neutral (OFF) position when released.
TO AVOID SERIOUS INJURY, DO NOT OPERATE THE MACHINE IF
ANY CONTROL LEVERS OR TOGGLE SWITCHES CONTROLLING
THE PLATFORM MOVEMENT DO NOT RETURN TO THE OFF OR
NEUTRAL POSITION WHEN RELEASED.
6. Lift.
The LIFT control lever provides raising and lowering
of the boom when positioned to up or down and
automatically returns to off when released.
7. Telescope.
The TELESCOPE switch provides extension and
retraction or the boom when positioned to in or out,
and automatically returns to off when released.
8. Swing.
The SWING control lever provides continuous swing
when positioned to left or right.
9. Function Speed.
The FUNCTION SPEED switch controls the speed of
Extend-A-Reach, Telescope, Basket Rotate, and
Basket Level functions. Turning the knob to the left
slows the speed and turning the knob to the right
increases the speed.rols is dependent upon the
position of the STEER/AXLES selector valve.
10. Creep.
The CREEP switch allows the operator to select a
lower speed for DRIVE, LIFT, or SWING.
NOTE: When the boom is above horizontal, the DRIVE func-
tion automatically goes into CREEP speed.
11. Drive/Steer Controller.
The Drive/Steer controller allows the operator to
select either forward or reverse when positioning the
controller to the desired position. The controller is
electrically ramped to allow infinitely variable driving
speed between fast and slow. Also, a thumb oper-
ated switch on top of the lever controls steer for the
rear wheels.