MS ROME Notice De Montage page 63

Adjust the height of the headrest to suit your child.Put the vehicle
belt through the belt guide.Place your child into the baby car seat
and let the vehicle belt pass the belt guide.Fasten the vehicle belt
with an audible sound "click".
CAUTION
Make sure lap strap lap is worn low down, so that the pelvis is firmly
engaged. Pull on the strap until it lies flat and is close against your child's
body.
The straps should be correctly adjusted and ensure they are not twisted.
INSTALLATION IN THE VEHICLE
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