Hot End Replacement

Ensure the print head is cold and that all filament is removed from the nozzle. Power down the printer and remove the power cable

Remove the magnetic printhead cover

Using a 2.5mm Hex Key, remove the heatsink fan by unscrewing the 2 socket-head bolts

Remove the clear filament window by unscrewing 2 socket-head bolts

Remove the fan shroud and part cooling fan by unscrewing 2 socket-head bolts

Remove the heater cartridge and hot thermistor connector from the PCB

Using a 1.5mm hex, remove the 2 set screws from the heat sink that hold in the hot end (be careful with these small screws)

Remove the hot end assembly

Apply thermal paste to the heatbreak on the new hot end

Install heat sink back onto hot-end by tightening 2 set screws back in place

Re-install the wiring for the thermistor and heat cartridge. Guide wires through cable channel, which will allow clear filament window to be installed correctly

Install the fan shroud and cooling fan back in place by tightening 2 socket-head bolts

Place the clear filament window back, tightening 2 socket-head bolts

Re-install the heatsink fan by tightening the 2 socket-head bolts. Ensure that the hot-end is fully seated

Place the magnetic printhead cover back in place