Britax MARATHON CLASSIC User Manual page 42

Care and Maintenance
Harness Buckle Removal
1 Fully recline the child seat.
2 Locate the metal buckle strap retainer on the
bottom of the child seat.
3 Pull the retainer away from the child seat to
loosen.
4 Turn the retainer so the short side will fit through
the slot in the child seat shell (Fig. A).
5 Push the retainer through the slots in the shell and cover, to the top
of the child seat.
Rethreading the Harness Buckle
1 Locate the slot in cover and shell for the harness buckle.
2 Turn the buckle retainer so the short side will fit through the slot in the
cover and the child seat shell (Fig. A).
3 Push the retainer through the slots in the shell and cover, to the bottom
of the child seat.
4 Pull the harness buckle away from the child seat until tight and verify
the strap is not twisted and the release button is facing outward.
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