Ford F-150 Owner's Manual page 223

10. Before placing the child in the
seat, forcibly move the seat forward
and back to make sure the seat is
securely held in place. To check
this, grab the seat at the belt path
and attempt to move it side to side
and forward and back. There should
be no more than 1 inch (2.5 cm) of
movement for proper installation.
11. Ford recommends checking with a NHTSA Certified Child Passenger
Safety Technician (CPST) to make certain the child restraint is properly
installed.
Installing child safety seats in cinch tongue combination lap and
shoulder belt seating position (front center seating position only)
The belt webbing below the tongue is the lap portion of the combination
lap/shoulder belt, and the belt webbing above the tongue is the shoulder
belt portion of the combination lap/shoulder belt.
WARNING: Always use both lap and shoulder safety belt in the
center seating position.
1. Position the child safety seat in
the center front seat.
2012 F-150 (f12)
Owners Guide, 2nd Printing
USA (fus)
Seating and Safety Restraints
223