JLG 800A Operation And Safety Manual page 40

SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
a. Attempt to lower the tower base boom while the tower
fly boom is extended. The tower base boom should not
lower and the red boom malfunction light should illu-
minate when pressing the tower down switch.
DISCONTINUE OPERATION IF THE TOWER BASE BOOM LOWERS OR THE BOOM MAL-
FUNCTION LIGHT DOES NOT ILLUMINATE.
b. Check that all machine functions are disabled when the
Emergency Stop Button is pushed in.
c. Check for proper operation of the auxiliary power and
manual descent system (if equipped). Operate each
function control to ensure proper operation.
From the Platform Control Station:
1. Check that the control console is secure and all guards pro-
tecting the function switches or locks are in place. Ensure
that all function controls and switches return to the "off" or
neutral position when released.
DO NOT OPERATE MACHINE IF GUARDS OR LOCKS ARE MISSING OR THE SWITCHES DO
NOT RETURN TO THE "OFF" OR NEUTRAL POSITION
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2. Check the footswitch adjustment and operation as follows:
a. With engine power shut down, attempt to start engine.
Engine should not attempt to start when footswitch is
activated.
b. Start engine. Activate hydraulic system by depressing
footswitch. Activate a boom function. Continue to acti-
vate the function and remove foot from footswitch. The
motion should stop.
DISCONTINUE OPERATION IF THE FOOTSWITCH DOES NOT OPERATE PROPERLY.
c. Check adjustment of footswitch. Footswitch must be
adjusted so that functions will operate when pedal is
approximately at its center of travel. If the footswitch
operates within last 1/4" of travel, top or bottom, it
should be adjusted.
NOTE: Footswitch has a 7 second delay timer. If a function is not acti-
vated within 7 seconds after depressing the footswitch, reset the
footswitch.
– JLG Lift – 3121209