Britax Roundabout 55 Guide D'utilisation page 41

Replacing the Buckle
IMPORTANT:
ALWAYS position the buckle in the
inner slot for rear-facing use when
using a vehicle seat belt installation.
The vehicle belt must pass in front
of the buckle strap for rear-facing
use.
Position the buckle in the slot
closest to but not under the child for rear-facing use when using the
LUAS installation.
NEVER leave the buckle in the adjustment slot.
Use the outer buckle slot when installing the child seat forward-facing
with a child weighing 13.6 kg (30 lbs) and above or if the buckle is
under the child in the inner position.
Guide the buckle retainer
1
down through the slot in the
child seat shell.
Slide the buckle webbing
2
into the slot between buckle
positions.
Select the appropriate slot for
3
the size of your child and turn
the buckle webbing and slide
it into the chosen slot.
Ensure that the buckle strap
4
is not twisted and that the
button faces out.
Care and Maintenance
ADJUSTMENT
SLOT
39