a gear's broken and this prevents the bobbin case from turning. i can send a picture of the broken part. my machine is 34 years old.. got it as a wedding present.. and was functioning perfectly fine uptil now : (
Hello Rupa,
The gears are easy to get, if it is the bottom gears they are easy to replace and I can attach timing instructions for that machine if you e-mail me, let me know what country you are in so I can tell you where to get the gears.
Ken