¶ Tools：
K2 Plus PTFE tube kit SKU: 4004200027 (including PTFE tube with 680mm length).
¶ Operation steps：
¶ Remove the top cover
For easier operation, you can first remove the glass top cover of the machine
¶ Remove the hotend cover
Remove the hotend cover of the machine by hand diagonally upward, note that the cover is magnetically attached without screws.
¶ Unplug the PTFE tube from the extrusion assembly
Press the plug of the pneumatic connector, then pull out the PTFE tube
¶ Unplug the pneumatic connector at the other end of the filament tube
After removing the black circlip, press the pneumatic connector and pull out the filament tube.
¶ Remove the problematic filament tube and replace with a new one
After removing the problematic filament tube, replace it with a new 680mm PTFE tube and fit it along the drag chain wire hole. Install the pneumatic connector at the filament inlet, then insert the circlip.
¶ Install the pneumatic connector for the extruder
Keep pressing the plug of the pneumatic connector, then insert the PTFE tube.
¶ Install the hotend cover
