Hotend wires are not visible on these images. Use the heatblock for correct orientation of the hotend.

Verify your PTFE tube is 50mm long.

Push the collet (black plastic part) down and fully insert the PTFE tube. Whilst pressing the PTFE tube into the hotend, lift the collet upwards, to lock the PTFE tube in place

Insert the hotend_collet_clip. This prevents the collet from loosening and keeps the PTFE tube locked in place.

Insert the hot end into the extruder_body with correct orientation of the heater and thermistor wires.

Note the position of the heater and thermistor wires.