Ford 2002 F650 Owner's Manual page 91

Reclining the seatback can reduce the effectiveness of the seat's
safety belt in the event of a collision.
The control is located on the outboard side of the seat cushion.
Press to raise or lower the front
portion of the seat cushion.
Press to raise or lower the rear
portion of the seat cushion.
Press the control to move the seat
forward, backward, up or down.
Seating and Safety Restraints
91