Graco 8480 - Manual (Page 6)

Your child should use the built-in harness if:

child weighs from 20 to
40 lbs. (9 to 18 kg), and
is between 27 and 40
inches (69 and 102 cm)
in height, and
 child is at least one year
old and can sit upright
unassisted, and

child’s shoulders are
below top harness slots.
If shoulders are above
top harness slots, child is
too large for built-in harness. You must remove
the harness and use the booster seat with your
vehicle’s lap and shoulder belt system.
6
20 lbs.
(9 kg)
30 lbs.
(14 kg)
40 lbs.
(18 kg)
With harness
If your child is between 30 and 40 lbs., he
should continue to use the harness if his shoulders
are below the upper harness slots. We highly
recommend use of the built-in harness for as long
as it is suitable and comfortable for your child.