H2.0 hex key
Unload the filament.
Press the pneumatic joint to disconnect the tubes on both ends
Unscrew and remove the tube anchor.
Install the tube anchor on the printer as shown in the image below, and proceed to tighten the 2 screws to lock the anchor in place.
Connect the filament tubes to the anchor, and ensure the PTFE tubes are properly inserted.
1. The Tube Anchor is movable;
2. Try to tug at the tubes gently to ensure both tubes are locked in correctly.