JLG 800A Operation And Safety Manual page 51

10. Articulating Jib Boom. (If Equipped)
The ARTICULATING control switch provides raising and
lowering of the jib when positioned to UP or DOWN.
11. Fuel Select (Dual Fuel Engine Only) (If Equipped)
Gasoline or liquid propane fuel may be selected by mov-
ing the switch to the appropriate position. It is unneces-
sary to purge the fuel system before switching fuels, so
there is no waiting period when switching fuels while the
engine is running.
12. Work Lights. (If Equipped)
The switch, on the light, operates work lights if the
machine is so equipped. The power/emergency stop
switch must be on, (mushroom button out) but ignition
switch does not have to be on to operate the lights, so
care must be taken to avoid draining the battery if left
unattended. The master switch and / or the ignition
switch at the ground control will turn off power to all
lights.
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SECTION 3 - MACHINE CONTROLS AND INDICATORS
13. Steer Select. (If Equipped)
When equipped with four wheel steering, the action of
the steering system is operator selectable. The center
switch position gives conventional front wheel steering
with the rear wheels unaffected. This is the best position
for normal driving 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 sideways as it goes forward.
This can be used for positioning the machine in aisle
ways or against 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.
A decal located at top of switch, instructs the desired
wheel maneuver with the switch position.
To re-synchronize the front and rear axles, activate the
steer switch (thumb rocker) until all steer cylinders are at
the end of their stroke. This can be done in either crab or
coordinated mode.
– JLG Lift – 3-11