Graco 4Ever Instruction Manual page 53

Press down firmly in the center of
the car seat. Pull on the shoulder
belt to tighten while feeding the
slack back in the retractor.
8. Tighten the Tether Strap
Push the car seat back while
tightening the tether strap to
remove all the slack.
9. Test For Tightness
Grab the sides of the seat where
the vehicle seat belt is and slide
the car seat side-to-side and
front-to-back.
If the seat moves less than 1 in.
(2.5 cm), it is tight enough.
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