Raising And Lowering The Main Boom; Telescoping The Main Boom; Function Speed Control; Machine Safety System Override (Msso)(Ce Only) - JLG 450A Operation And Safety Manual

SECTION 4 - MACHINE OPERATION

Raising and Lowering the Main Boom

To raise or lower the Main Boom, use Main Boom Lift
controller to select UP or DOWN movement.

Telescoping the Main Boom

To extend or retract the main boom, use the Main
Telescope Control Switch to select IN or OUT move-
ment.
4.8

FUNCTION SPEED CONTROL

This control affects the speed of telescope, tower
boom lift and jib lift. Turning the knob all the
way counterclockwise until it clicks puts drive,
main lift, platform rotate, and swing into creep
mode.
4-12
4.9 MACHINE SAFETY SYSTEM OVERRIDE (MSSO)(CE
ONLY)
The Machine Safety System Override (MSSO) is
used to override function controls for Emergency
Platform Retrieval only. Refer to Section 5.5,
Machine Safety System Override (MSSO)(CE
Only)for operating procedures.
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