Dremel 3D20 Quick Start Manual page 3

Step 12: All wires should be
disconnected. Move the turbo fan
and bracket out of the way.
Step 13: Unscrew the extruder
mounting screws from underneath
the extruder assembly. There are 2
screws, one located on the right
side and one located on the left
side.
Step 14: Remove the extruder
assembly.
Step 15: Replace the new extruder
assembly onto the extruder
carriage.
Step 16: Insert and tighten both
screws, left and right, to secure
extruder assembly to the extruder
carriage.
Step 17: Reconnect the fan wire
connector. This connector is
marked with black ink. (Red and
black to red and black wires).
Step 18: Reconnect the heat
cartridge wire connector.
(Orange and blue wire to 2 white
wires).
Step19: Reconnect the
thermocouple wire connector.
(Red and blue to red and white
wires).