Britax safe-n-sound BS4000A-020133 Manual Instructions For Installation & Use page 20

HOW TO USE
E. Hook the SecureGuard™ Device over the lap part of the seatbelt with the lap
belt positioning logo facing forward. The SecureGuard™ Device must be used
at all times to prevent the child slumping (sliding forward at base of seat) as
the lap belt on the abdomen is dangerous in the event of a crash.
F. Tighten the lap belt and the
sash belt if using an Inertia
reel retractor seatbelt, adjust
lap portion of the seatbelt
firmly around the child and
child booster seat, place the
sash belt through sash guide
where the red
SEATBELT PATH
Allow the slack sash portion to
retract into the seatbelt.
CAUTION:
ALWAYS USE THE SECUREGUARD™ DEVICE
20
Instructions for Installation & Use - Series No. BS4000A-020133
through the
sash guide
BOOSTER
label is.
Sash belt
across the
chest and
Engage
buckle