The First Years B540 User Manual
Page 14

Section 7 - Installation and Use
3
. Place child in Booster Seat.
- Child
MUST sit upright with back
contacting seat back,
NOT slouching
or sliding down.
4
. Adjust headrest so that the top of
shoulder belt guides are at or just
above child’s shoulders.
- Push yellow headrest handles in
and move headrest up or down to
desired position.
- Release headrest handles
and make sure handles
snap into locked position.
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