Remove the 4 screws that secure the heatbed to unlock it.
Note: The 4 removed screws can be stored in the removed heatbed fixture for future use.
Remove the foam on both threaded rods.
Remove the tape inside the printer.
Cut the zip tie and take out the power cable box.
Cut the zip ties securing the toolhead and cable chain.
Be careful not to cut the belt.
Move the toolhead toward the front door, and remove the foam securing the cable chain and underneath the X-axis.
Place the top cover back onto the printer.
¶ Step 3: Install external spool holders and PTFE tubes
Take out two spool holders and align them with the upper and lower mounts at the back of the printer. Slide them down to install.
Take two PTFE tubes from the accessory box.
Insert one end of the short tube into the upper spool holder and the other end into the upper filament inlet on the printer. Connect the long tube between the lower spool holder and the lower filament inlet. After connecting, gently pull to check if the tubes are properly secured.
Place the filament on the spool holder, insert it into the tube, and push it forward until it stops.
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