• Preheat the hotend to exactly 220C 
  • Remove the filament from the hotend 
  • Unscrew the old nozzle, while holding the heater block in position using an adjustable wrench 
  • Screw in the new MK8 nozzle and torque it to 30- inch pounds (3.4Nm) while holding the heater block in position using an adjustable wrench 
  • Verify that the thermal break is still seated flush on top of the heater block after installation