We recommend that you print a gear removal tool beforehand to deal with situation like this. If a clog already happens and there is no gear removal tool is around, you can use 2 cubes or similar objects to elevate the extruder to achieve the same result. For detailed procedures, please see step 2.
Follow the video to disassemble/assemble the extruder and clean the clog.
If you do not have a gear removal tool, please try the steps below.
1. Use 2 cubes or similar objects to elevate the extruder, with the gear facing downward.
2. Place a hotend screw in the position shown in the picture below.
3. Hold the extruder and the cubes still, and gently knock on the screw until the gear falls off.
When unscrewing the filament cutter retention screw, you should keep the Filament Cutter pressed. This ensures you can remove the screw completely, to avoid damaging the plastic section of the extruder.
Ensure that you are using the flat end of the hex tool to avoid damaging the filament cutter screw. If the screw is damaged, you might need to replace the filament cutter lever which contains a replacement screw.
After setting up, verify that everything works by turning the printer back on and doing a manual extrusion of your filament. Everything should flow consistently.
