FORD 2008 F-550 v.4 - Manual (Page 166)

Reclining the seatback can cause an occupant to slide under the
seat’s safety belt, resulting in severe personal injuries in the
event of a collision.
The control is located on the outboard side of the seat cushion.
Press front to raise or lower the
front portion of the seat cushion.
Press rear to raise or lower the rear
portion of the seat cushion.
Press the control to move the seat
forward, backward, up or down.
2008 F-250/350/450/550 (f23)
Owners Guide (post-2002-fmt)
USA (fus)
Seating and Safety Restraints
166