JLG M400 Operator Manual - Manual (Page 52)

SECTION 4 - MACHINE OPERATION
4-2 – JLG Lift – 3121644
Stability
Machine stability is based on two positions which are called For-
ward and Backward stability. The machines position of least For-
ward stability is shown in Figure 4-1., Position of Least Forward
Stability, and its position of least Backward stability is shown in
Figure 4-2., Position of Least Backward Stability.
TO AVOID FORWARD OR BACKWARD TIPPING, DO NOT OVERLOAD MACHINE OR OPER-
ATE THE MACHINE ON AN OUT-OF-LEVEL SURFACE.
4.3 MOTOR OPERATION
Power/Emergency Stop
The Power/Emergency Stop switch, when pulled
out (on), provides battery power for all machine
functions. The switch should be pushed in (off )
when recharging the batteries or parking the
machine overnight.
NOTE: If equipped with the optional on-board generator, the Emer-
gency Stop switch must be left on (pulled out) to allow for auto-
matic charging of the batteries.
Within about 2 seconds of pulling the switch out, the machine
will perform a diagnostic check of the various electrical circuits,
and if everything is OK, the platform alarm will beep once. During
this time the lights on the indicator panel will also blink once as a
bulb check.