I'm so excited to see the KDAZ 620. I have one! I was even able to find a manual. It "runs" great but I can't get it to pick up the thread from the bobbin. The long bobbin and the bobbin "case" are replacements. Also, sometimes the needle hits the needle plate. The manual is no help but does show how to thread it of course. The bobbin case looks exact.
Does this machine take special needles?
Kathie