JLG 800A_AJ Operator Manual - Manual (Page 44)

SECTION 3 - MACHINE CONTROLS AND INDICATORS
3-4 – JLG Lift – 3121209
5. Engine Start/Auxiliary Power Switch
or
Engine Start/ Auxiliary Power Switch /Function Enable.
To start the engine, the switch must be held
"UP" until the engine starts.
To use auxiliary power, the switch must be
held “DOWN” for duration of auxiliary pump
use. Aux power can only be used if the
engine is not running.
If equipped, the enable switch must be held
"DOWN" to enable all boom controls when
the engine is running.
NOTE: Auxiliary power only works if there is no engine oil pres-
sure, and is disabled if engine is running.
NOTE: Functions will operate at a slower than normal rate
because of the lesser flow of hydraulic fluid delivered.
WHEN USING AUXILIARY POWER, DO NOT OPERATE MORE THAN ONE
FUNCTION AT A TIME. (SIMULTANEOUS OPERATION CAN OVERLOAD
THE AUXILIARY PUMP.)
6. Tower Telescope
The TOWER TELESCOPE control switch provides
extending and retracting of the tower boom when posi-
tioned to IN or OUT. This function works only when the
tower boom is fully elevated (lift up).
TO AVOID UPSET AND SERIOUS INJURY, DO NOT OPERATE MACHINE IF
TOWER LIFT AND TELESCOPE FUNCTIONS DO NOT OPERATE IN THE
ABOVE SEQUENCE.
7. Hourmeter
An hour meter, installed in the bottom portion of the
Ground Control box, registers the amount of time the
machine has been in use, with engine running. By con-
necting into the oil pressure circuit of the engine, only
engine run hours are recorded. The hour meter registers
up to 9,999.9 hours and cannot be reset.