JLG 1200SJP Operation And Safety Manual page 45

14. Machine Safety System Override (MSSO)
(CE Only)
Provides emergency override of function
controls that are locked out in the event of
Load Sense System activation.
15. Air Shutoff Valve (ASOV) (If Equipped)
The red LED ASOV light indicates when the
valve has been actuated.
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SECTION 3 - MACHINE CONTROLS AND INDICATORS
3-7