JLG X390AJ Operator Manual - Manual (Page 53)

SECTION 4 - MACHINE OPERATION
3128792 – JLG Lift – 4-9
4.6 OUTRIGGER OPERATION
BE CERTAIN THAT THE OUTRIGGERS ARE SET ON A FIRM AND
HORIZONTAL SURFACE. DO NOT SET THE OUTRIGGERS ON
INCLINED, VERTICAL, OR SLIPPERY SURFACES.
THE OUTRIGGERS WILL NOT OPERATE UNLESS THE BOOM AND JIB
ARE COMPLETELY LOWERED, RETRACTED AND ALIGNED WITH THE
BASE.
NOTE: The base and boom/jib must be aligned and stowed
before this function will operate, see Section 4.4,
BASE AND BOOM/JIB ALIGNMENT.
If one of the outriggers does not come into contact with the
ground while being set, the engine will turn off or, the self-level-
ling attempt will stop. This situation may be due to the slope
on which the outriggers are being set up on exceeds the
allowed slope for proper set up at the end of the stabilization
phase. If the machine is to be lifted even further from the
ground after the outriggers are properly set, push and hold the
outrigger automatic set and level button.