I have a Bernina Deco 600. When I try to embroider, I hear a knocking sound and the machine stops. I looked inside and it lookks like the needle arm is hittihg the frame. When I grab the needle arm it will move up and down and twist a 1/4 turn in either direction. How do I fix this. I need to fix it soon because of a time sensitive project. Please help. email@example.com
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I have the Model 600. In the characters, there is one that looks like an "underline". Actually, it allows a space between words and does not make an underline mark. Some of the embroidery machines use that character to allow a space between words instead of having a "space" character.
It sounds like the needle bar of the machine has come loose inside. This will need setting in the correct position height wise or you risk damaging the hook. Sorry but it may need to go to the repairer.
It could be that there is a loose piece of thread, or some fluff which is obstructing the tension gauge. Try blowing around the theading area (or even run the hoover pipe near it to see if you can **** it out). I cleared mine by folding a piece of non fluffy material and rubbing gently between the tension dial and machine.
Try putting in new needles. Make sure they are in the proper position. There is a stopper which keeps the needle down far enough to make the right connection. Sometimes the needle stopper, after long use, moves up a little which prevents the needle from going low enough to pick up the bobbin thread. You could try lowering the needle just a little. Not to far, or it will break the needle. Sewing machines need a lot of oil. Not all at once but a drop or two after an hour of use. All lint needs to be removed from under and around the bobbin before it is oiled. Keeping the machine clean and oiled is the life of the machine.