JLG 4017 Eccupped for Platform Operator Manual - Manual (Page 101)

Section 5 - Emergency Procedures
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ERS with Platform
1. Verify the emergency stop switch in the cab is not depressed.
2. Open the engine cover.
3. Locate the ERS control panel (1). Push the enable button (2) and verify the
green light (3) illuminates. If platform is overloaded, the red light (6) will remain
on and alarm will sound.
4. While depressing the enable button rotate either the lift/lower (4) or the extend/
retract (5) switches. Hold in place until the platform is at ground level.
WARNING
TIP OVER HAZARD. To be used for retracting then lowering platform. Only use
the extend or lift functions if necessary and limit their duration. Extending/lifting
platform could damage the equipment and/or cause tip over resulting in death or
serious injury.