JLG 1250AJP Operation And Safety Manual page 55

SECTION 3 - MACHINE CONTROLS AND INDICATORS
NOTE: When boom is positioned above transport position or telescoped
out and any of the following switches, DRIVE SPEED/TORQUE
SELECT or FUNCTION SPEED, are positioned to HIGH, high func-
tion speeds are automatically cut out and the machine contin-
ues to operate at a lower speed.
DO NOT OPERATE MACHINE IF DRIVE SPEED/TORQUE SELECT OR FUNCTION SPEED
SWITCHES OPERATE WHEN BOOM IS OUT OF TRANSPORT POSITION.
17. Drive Speed/Torque Select
The forward position gives maximum drive speed. The back
position gives maximum torque for rough terrain and climb-
ing grades. The center position allows the machine to be
driven as quietly as possible.
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18. Steer Select
The action of the steering system is operator selectable. The
center switch position gives conventional front wheel steer-
ing with the rear wheels unaffected. This is for normal driv-
ing at maximum speeds. The forward position is for "crab"
steering. When in this mode both front and rear axles steer
in the same direction, which allows the chassis to move side-
ways as it goes forward. This can be used for positioning the
machine in aisle ways or close to buildings. The back switch
position is for "coordinated" steering. In this mode the front
and rear axles steer in the opposite directions to produce the
tightest turning circle for maneuvering in confined areas.
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.
19. Platform Leveling Override
A three position switch allows the operator to adjust the
automatic self leveling system. This switch is used to adjust
platform level in situations such as ascending/descending a
grade.
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