JLG M600 Operator Manual - Manual (Page 76)

SECTION 5 - EMERGENCY PROCEDURES
5-2 – JLG Lift – 3121217
Platform or Boom Caught Overhead
If the platform or boom becomes jammed or snagged in
overhead structures or equipment, rescue platform occu-
pants prior to freeing the machine.
5.4 EMERGENCY TOWING PROCEDURES
Towing this machine is prohibited, unless properly equipped.
However, provisions for moving the machine have been
incorporated. For specific procedures, refer to Section 4.
5.5 MANUAL DESCENT SYSTEM
The manual descent system is used, in the event of total power
failure, to lower the boom using gravity. To operate the manual
descent system, proceed as follows:
TELESCOPING IN AND LOWERING THE BOOM
1. Install the spool plug in the location shown and push the
control lever on the valve up.
2. Install the handle into the hand pump and pump the
handle until the desired platform position is reached.
3. Push the control lever down when complete. Remove
the handle from the hand pump and the spool plug from
the valve.