Graco 4EVER Instruction Manual page 102

How to Lock Your Lap and Shoulder Vehicle Seat Belt
Note: With the vehicle seat belt in this locking mode, all the tension is
upwards in the shoulder belt. This may start to tilt your car seat sideways.
If this happens, use a locking clip instead of this switching the retractor.
See Sliding Latch Plate and ELR Retractor.
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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