Britax Safe-n-sound BS8100A-020133 Series Instructions For Installation & Use page 42

HOWTOUSE
I. If the seat belt buckle is adjustable, adjust the
buckle as low as possible away from the child.
J. Position the lap-sash belt over the child ensuring
the lap portion is positioned on the child's thighs.
The seat belt should follow the red Seat Belt path
labels marked -BOOSTER SEATBELT PATH.
Engage seat belt buckle and tongue ensuring
there are no twists in the belt.
Ensure you have engaged the SecureGuard™
Device into the harness buckle.
If the lap belt is not on the child's thighs, shorten
the length of the crotch strap, see page 38. Fit
the SecureGuard™ Device over the lap belt as
shown. The SecureGuard™ Device must be used
at all times in Booster mode.
IMPORTANT:

The SecureGuard™ Device must be used when the child is using the Booster Seat.
Always ensure the seat belt is across the child's thighs and across the chest.
42
Instructions for Installation & Use - Series No. BS8100A-020133
Lap part of seat
belt in recess area
(under armrests).
Feed lap belt between SecureGuard™ Device
and harness buckle with the Red button (of the
buckle) facing forward.
J