Robo E4 Pro: Unclogging / Replacing Your Extruder

The below video walks you through a variety of troubleshooting steps you can go through should you experience a clog in your Robo E4 Pro extruder, including replacing either the Nozzle (2:51) or the entire Extruder Assembly (3:56).

My Robo E4 Pro is jammed/cogged in the extruder. How do I unclog it?

First, make sure your filament temperature matches the temperature your printer is set to.

Then, try pushing your filament through the extruder manually using needle-nose pliers. If it won't push through, use the pliers to pull it out.

If that doesn't work, cut your filament as close to the extruder as you can and then use the unclogging tool to push the filament through that way. If needed, heat the end of the unclogging tool with a lighter.

If you cleared any filament out of the extruder, reload filament and try to print again.

If you were unable to clear any filament, you may need to replace your extruder nozzle or assembly.