Graco NAUTILUS SNUGLOCK LX Instruction Manual page 78

12. Pull All the Slack Out From Around
the Waist
Pull up on the harness strap while pushing
the chest clip down. Do this to both sides.
13. Tighten the Harness by Pulling the
Harness Adjustment Strap
When you are not able to pinch any of the
harness webbing at your child's shoulder,
the harness is tight enough.
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