JLG 800A Operation And Safety Manual page 52

SECTION 3 - MACHINE CONTROLS AND INDICATORS
14. Auxiliary Power
When pushed forward, the switch energizes the starter
motor to start the engine.
When pushed back, it energizes the electrically oper-
ated 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.
15. Tower Lift
The three position center-off toggle switch provides for
raising and lowering of the tower boom when positioned
to "UP" or "DOWN". TOWER LIFT must be fully elevated
"UP" before operating TOWER TELESCOPE. (TOWER
LIFT should not function when TOWER TELESCOPE is
extended).
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16. Tower Telescope
The three position center-off toggle switch provides for
extending and retracting of the tower boom when posi-
tioned to IN or OUT. TOWER TELESCOPE must be fully
RETRACTED before operating TOWER LIFT. (TOWER
TELESCOPE should not function when TOWER LIFT is
not fully elevated "UP").
TO AVOID SERIOUS INJURY, DO NOT OPERATE MACHINE IF ANY CON-
TROL LEVERS OR TOGGLE SWITCHES CONTROLLING PLATFORM
MOVEMENT DO NOT RETURN TO THE OFF OR NEUTRAL POSITION
WHEN RELEASED.
TO AVOID UPSET AND SERIOUS INJURY, DO NOT OPERATE MACHINE
IF TOWER LIFT AND TELESCOPE DO NOT OPERATE IN THE ORDER
DESCRIBED ABOVE.
– JLG Lift – 3121209