How do I loosen the Fllo harness? January 14, 2021 20:03 Updated While lifting up on harness adjuster tab, pull out on the shoulder harness straps. Related articles How do I adjust the Fllo's Shoulder Harness Straps? How do I loosen the Foonf harness? Video Manual (US) - Installing Fllo Rear-Facing Video Manual (US) - Installing Fllo Forward-Facing Video Manual - Prepare Fllo Before Installation Comments 0 comments Article is closed for comments.