Ford F-150 Owner's Manual page 174

Seating and Safety Restraints
3. Remove filter.
To install a filter:
1. First, position the filter in its
housing making sure that the far
forward end is all the way up in the
housing.
2. Push in on the center of the
outside edge of the filter and rotate
up into the housing until it clips into
position.
REAR SEATS
Second row head restraints
Your vehicle is equipped with head restraints that are vertically
adjustable.
WARNING: To minimize the risk of neck injury in the event of a
crash, the driver and passenger occupants should not sit in
and/or operate the vehicle, until the head restraint is placed in its
proper position. The driver should never adjust the head restraint
while the vehicle is in motion.
WARNING: The adjustable head restraint is a safety device.
Whenever possible it should be installed and properly adjusted
when the seat is occupied.
174
2011 F-150 (f12)
Owners Guide, 3rd Printing
USA (fus)