Push down on the blue collar while pulling up on the Bowden tube.
Be mindful of the wiring, mainly the thermistor wiring.
Sorry about the portrait mode. Hopefully this will be a temporary video to be replaced with something a tad bit better. Hopefully.
Nope still the same video after almost 8 months.
The “set screw” or “grub screw” takes a 1.5mm or 1/16“ Allen wrench.