Graco NAUTILUS Elite Owner's Manual page 36

6. If a vehicle top tether anchor is available,
secure the tether to hold seat in place.
See Section 19.0 Using the Tether
7. Safety Check for Secure Installation
Perform this test every time you drive with your child.
Twist and pull child restraint forward and to
both sides to make sure the vehicle belt does not
lengthen or loosen and the child restraint does not
easily move. The child restraint should not move
side to side or forward more than 1 inch (2.5 cm) .
procedure OR find another location for the child
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