JLG 510AJ Operator Manual - Manual (Page 43)

SECTION 3 - MACHINE CONTROLS AND INDICATORS
3121179 – JLG Lift – 3-9
Platform Control Station
1. Drive Speed Switch
(4WD Machines) - The forward position gives maximum
drive speed by shifting the drive motors to minimum dis-
placement and giving high engine when drive controller
is moved. The back position gives maximum torque for
rough terrain and climbing grades by shifting the wheel
motors to maximum displacement and giving high
engine speed when drive controller is moved. The cen-
ter position allows the machine to be driven as quietly as
possible by leaving the engine at mid speed and the
drive motors in maximum displacement.
(2WD Machines) - The forward position selects maxi-
mum speed by operating at high engine rpm. The back-
ward position selects mid engine rpm.
ONLY USE THE PLATFORM LEVELING OVERRIDE FUNCTION FOR
SLIGHT LEVELING OF THE PLATFORM. INCORRECT USE COULD CAUSE
THE LOAD/OCCUPANTS TO SHIFT OR FALL. FAILURE TO DO SO COULD
RESULT IN DEATH OR SERIOUS INJURY.
2. Platform Leveling Override
A three position switch allows the operator to adjust the
automatic self leveling system. This switch is used to
adjust the platform level in situations such as ascending/
descending a grade.
3. Horn
If pressed, this switch supplies power to the horn.
4. Power/Emergency Stop
An on-off Power/Emergency Stop switch and a separate
Engine Start/Auxiliary Power toggle switch on the plat-
form console supply electrical power to the starter sole-
noid, when the ignition switch is placed in the ON
position and the ENGINE START switch is push forward.