Graco NAUTILUS SNUGLOCK LX Instruction Manual page 76

6. Check the Buckle Position
The correct slot the one that is closest to
your child without being underneath your
child.
7. To Adjust the Buckle Strap
From bottom of car seat, rotate metal
retainer to side in order to push it through
slot easier.
8. Pull buckle strap from child
restraint as shown.
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