FORD 2012 F-550 v.3 - Manual (Page 129)

Note: When the vehicle is in motion, ensure the locking pins and knobs
are fully engaged.
Note: Ensure all cargo is secured.
Note: When the vehicle is in motion, the tailgate load must not exceed
150 lb (68 kg).
Note: The bed extender should always be kept in the grocery mode or
stowed position with the tailgate closed when not being used for the
purpose of restraining cargo in the tailgate mode.
To open the bed extender into grocery mode, follow Steps 1–4 by
rotating the panels away from the tailgate. Close the tailgate.
Driver Controls
129
2012 F-250/350/450/550 (f23)
Owners Guide, 3rd Printing
USA (fus)