C2 User Manual, Release 1.0.0
3.5 Replacing your Hotend Nozzle
Follow these steps to remove your hotend nozzle
1. Make sure to turn your Robo C2 off, and unplug the power cord from the back of the machine
2. Remove the magnetic extruder plate to expose your entire hotend and wires
3. The allen screw located on the front aluminum plate is the tensioner that holds your hotend in place. It is likely
that this has come loose. Grab the allen wrench out of the the tool kit that came with your printer.
4. Loosen your hotend by turning the tensioner screw counterclockwise a few turns.
5. When the hex screw is loose enough, your hotend should be able to fall out of its housing
6. Carefully pull the wires by hand to remove them from their housings
7. Place new hotend in by reversing these steps
8. Push the hotend as far as it can go up into the seated ring and make sure it is flat against it.
9. While you are holding it there, screw the allen screw clockwise until you feel a good amount of resistance and
the hotend cannot be pulled out with your hand. Make sure you align the heater block to be parallel with the
front of the extruder so the hotend cover will lay flat against the magnets when reinstalling.
10. Turn the printer back on and test.
3.5. Replacing your Hotend Nozzle 31
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