JLG 450A_AJ Series II Operator Manual - Manual (Page 45)

SECTION 3 - MACHINE CONTROLS AND INDICATORS
3121289 – JLG Lift – 3-9
Platform Control Station
TO AVOID SERIOUS INJURY, DO NOT OPERATE MACHINE IF ANY CONTROL LEVERS OR TOG-
GLE SWITCHES CONTROLLING PLATFORM MOVEMENT DO NOT RETURN TO THE OFF OR
NEUTRAL POSITION WHEN RELEASED.
1. Drive Speed Switch
(4WD Machines) - The forward
position gives maximum drive
speed by shifting the drive
motors to minimum displace-
ment 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 maxi-
mum displacement and giving high engine speed when
drive controller is moved. The center position allows the
machine to be driven as quietly as possible by leaving the
engine at mid speed and the drive motors in maximum dis-
placement.
(2WD Machines) - The forward position selects maximum
speed by operating at high engine rpm. The backward posi-
tion selects mid engine rpm.
ONLY USE THE PLATFORM LEVELING 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
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
A push-type Horn switch supplies electrical
power to an audible warning device when pressed.
4. Power/Emergency Stop
A two-position red mushroom shaped switch
furnishes power to PLATFORM Controls when
pulled out (on). When pushed in (off ), power is
shut off to the platform functions.