Subaru 2001 Legacy Owner's Manual page 50

Seat, seatbelt and SRS airbags
store the tongue plates in the recess in the retractor and then insert
the connector (tongue) plate into the slot located at the front of the
recess.
NOTE
When folding down the rear seat cushion, store the seatbelts in
the seatbelt pocket to prevent them falling below the cushion.
HB1074BB
HB1076BB
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