I tried to sew on my Pfaff and it wouldn't sew. It just made this funny whirring sounds. I was so mad. I took everything apart, rethreaded it and checked the bobbin. I was ready to take it in to the shop where I bought it in the morning. Than I realized the bobbin winder was pushed over to wind the bobbin. :oops: :oops: :oops: :oops: I pushed it back and it sewed perfectly. Opps.