Chicco KeyFit 30 Mode D'emploi page 54

INSTALL USING LAP-SHOULDER BELT
Thread vehicle seat belt up and slide into the Seat Belt Guide on the side of
1
the Child Restraint.
Pull vehicle seat belt down and slide into the Seat Belt Guide on opposite
2
side of the Child Restraint. Buckle the vehicle seat belt. Pull out all of the
shoulder belt webbing and activate the locking mode of the vehicle belt.
If belt does not lock, do not use that seating position to install the carrier.
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