Feed the Filament
Preheat the nozzle:
Choose ”Prepare”>”preheat PLA ( or ABS)” on LCD. Choose the nozzle you want to preheat.
Lifting the build plate to the top of the Z-axis. Go to menu "Prepare" - choose "Auto home" in the LCD, the extruder/print head will go to the original point, the build plate will go up to the top of Z-axis.
Continue to feed the filament in until it emerges from the nozzle.
Note: Please DO push the filament GENTLY.
If filament attaches the nozzle, just keep them attached, stop pushing hardly. Otherwise, the nozzle connection could be broken.
After the nozzle is preheated enough, the filament will flow out from nozzle naturally.
Tighten the black screw to fix the filament with the clamp, making it not too loose or too tight.