Please see the attached document if your problem is related to inspecting/ clearing a blockage:


Some possible reasons that cause the failure to load filament.

  1. Clogged Nozzle or Hot end

  2. Extruder Motor Not Engaging

  3. Incorrect Extruder Tension

  4. Filament Jam or Tangling

  5. Wrong Filament Type or Diameter

  6. Excessive Resistance in the Extruder Path

  7. Incorrect or Broken PTFE Tube (for Bowden Systems)

  8. Hot end Heat Not Reaching Proper Temperature

  9. Blocked or Dirty Filament Path (Hot end or Extruder Gear or Barrel)

  10. Incorrect Loading Procedure

  11. Extruder Gear Slipping or Worn Out