Graco PD316986D 9/16 Manual De Instrucciones página 77

How to Lock Your Lap and Shoulder Vehicle Seat Belt
Sliding Latch Plate and Switchable Retractor
A latchplate that slides freely on the belt webbing and cannot,
by itself, hold the belt snug around a car seat.
When installing the car seat, route the vehicle seat belt
through the proper belt path and buckle it in. Slowly pull
the shoulder belt all the way out to switch it to locking
mode. Then, as you pull the vehicle seat belt tight, feed all the
slack back into the retractor.
Grab the sides of the seat at the belt path and slide the seat
side-to-side and front-to-back. The seat should not move more
than 1" (2.5 cm).
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