Graco 1786988 User Manual Page: 51

DO NOT anchor tether strap to vehicle when
using child restraint rear-facing.
Tether hook must be attached to child restraint
for rear-facing use or if vehicle is not equipped
with tether anchors.
• Attach tether hook to back of child
restraint as shown.
• Pull loose end of adjustment strap to
remove any slack.
• Roll loose end of adjustment strap up
and secure with a rubber band.