(1) Unlock the extruder, pull out the Teflon tube, feed from the outside until it passes through the Teflon tube.
(2) Heat the nozzle to 200C on the machine screen and insert the filament from top to bottom.
(3) Push the filament until it flow out of the nozzle.
(4) Lock the extrusion switch, restore the Teflon tube, and cool the nozzle.
(1) Open the motor cover and unlock the extruder.
(2) Insert filament until it cannot be pushed.
(3) Lock extruder switch
(4) Click Extrude on the screen, observe the nozzle, if the filament have been squeezed out, wait for "extruding Finish", if not squeezed out, lightly push the filament forward and click "Extrude".