Manual Level Adjustment (Trim); Raising And Lowering Platform; Raising - JLG 4394RT Operation And Safety Manual

SECTION 3 - MACHINE CONTROLS, INDICATORS AND OPERATION

Manual Level Adjustment (Trim)

NOTE: There is an override feature on the Leveling Jack system
that allows the operator to adjust (trim) the level of the
machine to the left or right when the platform is com-
pletely lowered. Use the following instructions to adjust
the level of the machine.
1. With the machine in the stowed position turn the
power on, start machine and depress the leveling jack
selection switch located on the front of the platform
control box.
2. To adjust (trim) the machine to the right, activate the
steer switch on the top of the controller to the right
until the desired position is reached.
3. To adjust (trim) the machine to the left, activate the
steer switch on the top of the controller to the left
until the desired position is reached.
NOTE: Anytime the trim function is used there is a possibility that
the machine may become out of level. At this time the
machine will no longer lift but the machine can be low-
ered.
NOTE: The machine must be in the stowed position before the
trim function is operable.
NOTE: You can not adjust the level of the machine with the EASI-
CLADDER™ option installed.
3-20

Raising and Lowering Platform

DO NOT RAISE PLATFORM EXCEPT ON A SMOOTH, FIRM AND LEVEL SURFACE
FREE OF OBSTRUCTIONS AND HOLES.
There is a flow control valve which controls both the lift up
and lift down speeds. Anytime you abruptly change lift direc-
tions, there is a three second delay between lift up and lift
down.

Raising

1. With the engine running, place the power select
switch to desired position (platform or ground).
2. Position the applicable emergency stop switch to the
ON position.
3. If operating from the ground controls, position the lift
switch to up and hold until desired elevation is
achieved. If operating from the platform controls,
press the lift switch then move the control handle for-
ward and hold until desired elevation is reached. Lift
speed is determined by the distance the control han-
dle is moved from the off center position. If the lift
switch is not activated within 5 seconds after the trig-
ger switch is pressed, power is removed from the cir-
– JLG Lift – 3121641