JLG 601S Operator Manual - Manual (Page 41)

SECTION 3 - MACHINE CONTROLS AND INDICATORS
3121218 – JLG Lift – 3-9
5. Auxiliary Power
Energizes the electrically operated hydraulic pump,
when actuated. (Switch must be held ON for duration of
auxiliary pump use.)
The auxiliary pump functions to provide sufficient oil flow
to operate the basic machine functions should the main
pump or engine fail. The auxiliary pump will operate
tower boom lift, tower telescope, main boom lift, main
telescope and swing.
6. Fuel Select (Dual Fuel Engine Only)
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.
NOTE: MAIN LIFT, SWING, and DRIVE control levers are spring-
loaded and will automatically return to neutral (OFF) posi-
tion when released.
7. Drive/Steer
Proportional single axis joystick is provided to control
drive. 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 handle. Push on the left
side of the switch to steer left, on right side to steer right.
NOTE: Both drive and steer functions work in the opposite direc-
tion when the boom is positioned over front of the chas-
sis.
NOTE: When boom is positioned above horizontal and the DRIVE
SPEED/TORQUE SELECT switch is positioned to HIGH,
high function speeds are automatically cut out and the
machine continues to operate at a lower speed.