Graco Contender Slim Instruction Manual page 64

When headrest is in lowest position, always pull
flap forward as shown.
5. Check the Buckle Position
The correct slot is the one that is closest to your
child without being underneath them.
6. To Adjust Buckle Strap
(skip to step 10 if not needed)
To adjust, recline foot must be in forward-facing
position. Locate the metal retainer under the car
seat.
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