Diono radian 3RXT Mode D'emploi page 21

Lift the bottom bar up and over the inside channel
toward the seat bottom to release. Confirm locked.
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Make sure UAS strap or vehicle seat belt is routed
through the forward-facing belt path marked with
the red text and forward-facing illustrations.
FORWARD-FACING BELT PATH
Install this car seat tightly in your vehicle. The car
seat should not move at the forward-facing belt
path location by more than 2.5 cm (1 in) from side-
to-side, front-to-back. If using a lap belt only, refer
to your vehicles owners manual for installation
advice.
Harness straps MUST be above the top of your
child's shoulders. The chest clip should be placed at
armpit level.
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INSTALL USING UAS: 10–18 kg (22–40 lb)
1. Remove UAS strap from
storage location 1 on back of
seat. Use UAS release on UAS
connectors to remove.
2. Extend the UAS strap. For
easier installation, extend the
UAS strap to its maximum
length by pressing the grey
button and pulling on the
strap.
3. Unhook and remove top
tether strap from storage
location 2 on back of seat.
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