JLG X550AJ Operator Manual - Manual (Page 38)

SECTION 3 - MACHINE CONTROLS, INDICATORS AND OPERATION
3-8 – JLG Lift – 3128791
13. Platform Level Key Switch
The control allows the operator to adjust the level of the
platform up or down.
14. Display
The display shows the status of the machine and operat-
ing information. Wait until a display screen appears
before beginning operation.
NOTE: Controllers (16 through 23), the speed of component
movement is proportional to the controller distance
from the center neutral position.
15. Left Side Track Drive And Steer
This control when moved forward or rearward simulta-
neously with the right side track control (24), allows the
operator to move the machine in a straight forward or
reverse direction. If each control is moved individually,
different amounts or in opposite directions steering the
machine occurs.
16. Tower Boom Lift
This control allows the operator to raise and lower the
tower boom.
17. Main Boom Lift
This control allows the operator to raise and lower the
main boom.
18. Main Boom Telescope
This switch allows the operator to extend and retract the
main boom.
19. Platform Rotate
This switch allows the operator to rotate the platform to
the right or left.
20. Jib
This control allows the operator to raise and lower the jib.
21. Swing
This control allows the operator to swing the boom
assembly to the right or left.
22. Right Side Track Drive And Steer
This control when moved forward or rearward simulta-
neously with the left side track control (17), allows the
operator to move the machine in a straight forward or
reverse direction or, if each control is moved individually
or in opposite directions, to steer the machine.
The movement of a controller without first
pressing the platform footswitch is indi-
cated by the depress footswitch error icon
on the platform/remote LCD display.