IMPORTANT: Only change one nozzle at a time. If both nozzles are loosened, entire hot end assembly will become loose.

1. Heat nozzle to temperature of inserted filament

2. Select "Filament Control" and remove filament from nozzle to be changed

3. Power down machine (head should be in service position and bed should be at lowest height)

4. Wait for nozzle to cool

5. Use an M2.5 hex wrench and loosen each of the three 50mm screws holding the nozzle to the heater body

6. Place one bolt inside the replacement nozzle and lightly screw in to hot end assembly

7. Repeat for the second and third bolts

8. Tighten all bolts evenly, and power machine back on to test