Graco 4EVER 4-IN-1 CAR SEAT Instruction Manual page 56

9. Attach Top Tether Strap
Extend the top tether by lifting
up on the tether lock and
attach.
Consult vehicle's owner
manual for specific location.
10. Tighten the Top Tether Strap
Push the car seat back while tightening the
top tether strap to remove all the slack.
11. 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 2.5 cm (1 in), it
is tight enough.
See section 6-A to secure your child.
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