Graco 4EVER 4-IN-1 CAR SEAT Instruction Manual page 51

12. Test For Tightness
Grab the sides of the seat where the UAS
strap is and slide the car seat side-to-side
and front-to-back.
If the seat moves less than 2.5 cm (1 in), it
is tight enough.
See section 6-A to secure your child.
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