STEP 6: At this point we can carefully disassemble our Bernina Nova 900 back into two halves (unfortunately the cord is screwed into one half of your Bernina Nova making it impossible to completely take apart). Unscrew those as well and set them aside so you won’t lose them. It will pull up easily and expose more screws. STEP 5: Now remove the Bernina face plate. At this point, go ahead and remove them with either an appropriate screwdriver or Bernina supplied Bernette screwdriver (again for me, I had misplaced mine after sewing machine college and was using a Bernina 800 screwdriver, which actually fit perfectly! STEP 4: Once you’ve opened up these two side panels, locate all of the visible screws (there should be 5 on each side) that hold your Bernina Nova back plate on. There is likely quite a bit of lint and dirt in this area which you can now take care of! This will allow you to get at some of the screws holding on your Bernina back faceplate. STEP 3: Remove the front of the Bernina Nova 900 by opening the information information cover located on your Bernina’s face plate. Be careful when doing this because there are several springs inside which can pop out if you’re not careful. STEP 2: Remove any dust covers on either side of the machine. Make sure to unplug it, this computerized Bernina will not run without connecting the plug into a working wall outlet! Step 1: Disconnect the electrical cord from the wall outlet and remove any bobbins or projects in progress to prevent accidentally running over them with parts of your Bernina Nova. Here are instructions for cleaning your Bernina Nova 900 sewing machine. The Bernina Nova 900 is an older style Bernina Sewing Machine that uses an external bobbin case, instead of the drop-in type like the newer Bernina models. This video also outlines the steps to help you get your machine up and running:

Allows you to service and repair your Bernina Nova 900 machine

Bernina nova 900 manual