Place the car seat on a stable surface, with the front of the seat facing up.
Line the Rear-Facing Base Retention Hooks up with the openings in the bottom of the car seat. Insert the Rear-Facing Base Retention Hooks into the openings and slide the base down until you hear the Rear-Facing Base Release Lever “click” to lock the base on.
Pull up on Rear-Facing Base to check that it is locked in place.
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