Slide the piece of filament through the extruder and into the Budaschnozzle to ensure alignment.
Insert 2x M4 nuts into the mounting flange of the extruder body.
Using 2x M4x20 SHCS and M4 washers, assemble the Extruder, Budaschnozzle and extruder mount together.
Attach the 40 mm fan to the duct using 4x M3x12 SHCS, note orientation of fan.
Using 2x M3x12 SHCS with M3 washers, attach the fan assembly to the extruder mount as shown.