Subaru 2005 Legacy Owner's Manual page 85

Seat, seatbelt and SRS airbags
2. While following the instructions supplied by the
child restraint system manufacturer, connect the lower
hooks onto the lower anchorages located at "
marks on the bottom of the rear seatback. When the
hooks are connected, make sure the adjacent seat-
belts are not caught.
1-54
3. [If your child restraint system is of a flexible attach-
ment type (which uses tether belts to connect the child
" restraint system properly to the lower anchorages)]
While pushing the child restraint into the seat cushion,
pull both left and right lower tether belts up to secure
the child restraint system firmly by taking up the slack
in the belt.
4. Connect the top tether hook to the tether anchor-
age and firmly tighten the tether.
For information on how to set the top tether, read the
following "Top tether anchorages".