JLG 340AJ Operator Manual - Manual (Page 42)

SECTION 3 - MACHINE CONTROLS AND INDICATORS
3-10 – JLG Lift – 3121258
5. Start/Auxiliary Descent Enable
When pushed forward, the switch energizes the starter
motor to start the engine.
When pushed back, it energizes Auxiliary Descent
Enable which allows the boom and jib to be lowered in
the event of engine malfunction. Gravity is used to con-
trol valves and lower the booms and jib. The functions
that can be operated with this control are:
• Main Lift Down
• Tower Lift Down
• Jib Lift Down
6. Fuel Select (Dual Fuel Engine Only) (If Equipped)
Moving the switch to the appropriate position selects
gasoline or liquid propane fuel.
7. Drive Orientation Override
When the boom is swung over the rear tires or further in
either direction, the Drive Orientation indicator will illumi-
nate when the drive function is selected. Push and
release the switch, and within 3 seconds move the
Drive/Steer control to activate drive or steer. Before driv-
ing, locate the black/white orientation arrows on both
the chassis and the platform controls. Move the drive
controls in a direction matching the directional arrows.
NOTE: To operate the Drive joystick, pull up on the locking ring
below the handle.
NOTE: The Drive joystick is spring loaded and will automatically
return to neutral (off) position when released.
8. Drive/Steer
Push forward to drive forward, pull back to drive in
reverse. Steering is accomplished via a thumb-activated
rocker switch on the end of the steer handle.
9. Telescope
Provides extension and retraction of the main boom.