FORD 2011 F-150 v.1 - Manual (Page 159)

Properly adjust the head restraint so that the top of the head restraint is
even with the top of your head and positioned as close as possible to the
back of your head. For occupants of extremely tall stature, adjust the
head restraint to its full up position.
WARNING: To minimize the risk of neck injury in the event of a
crash, head restraints must be installed properly.
Front seat
• Lift the track release bar to move
the seat forward or rearward.
Make sure that the seat is
relatched into place.
Seating and Safety Restraints
159
2011 F-150 (f12)
Owners Guide, 1st Printing
USA (fus)