CONCORD ultimax Instructions De Montage Et Mode D'emploi page 52

6. Removing the cover / removing the pelvic insert
6.4
Remove the cover carefully from
the seat shell.
To fit the cover, proceed in the
reverse order.
6.5
0074-04
If the child's body weight exceeds
8 kg, the factory-fitted pelvic
insert should be removed. This
is located on the surface of the
seat beneath the seat cover.
0117-02
0258-00