Ford 2011 Mariner Owner's Manual page 158

Seating and Safety Restraints
Perform the following steps when installing the child seat with
combination lap/shoulder belts:
Note: Although the child seat illustrated is a forward facing child seat,
the steps are the same for installing a rear facing child seat.
1. Position the child safety seat in a
seat with a combination lap and
shoulder belt.
2. Pull down on the shoulder belt
and then grasp the shoulder belt
and lap belt together.
158
2011 Mariner (mrn)
Owners Guide, 2nd Printing
USA (fus)