Vauxhall Astra Owner's Manual page 108

Place the height adjuster cushion in one of
the rear seat bench seating positions. Press
the rounded side of the supplied adap ter
between the back rest and the seat bench,
as shown in the illustration, and eng age
both belt buckles in the adapter.
106
Before fitting, ad apt child safety seat to
child' s size as necessary – see page 108.
Alw ays mount safety seat fa cing away
from the direction of trav el and lock the
latch plates audibly into the belt buckles on
the securing console. Tug on the seat to
check that the belt ha s engaged properly .
Insert latch p la te of reboard belt into
buckle at rear of safety seat backrest.
Tighten reboard belt at belt adjuster. The
child safety seat back rest must rest against
the front seat and the securing console
must be positioned fully on the seat.
To adjust the front seat, loosen reboard
belt. O nc e sea t has b een adjusted,
retig hten at belt adjuster.