![]() ![]() Sometimes a deep cleaning is enough to stop the knocking noise. If there are no instructions on how to oil your sewing machine in your user manual, do not do it. Keep in mind that most newer sewing machines should only be oiled by a repair technician. Follow the directions in your user manual to make sure you apply sewing machine oil everywhere that you are supposed to. Your Gears Need OilĪ knocking noise can also be the result of gears and moving parts bumping and rubbing up next to each other inside your sewing machine. Don’t continue to sew if you hear a knocking noise because it can damage your machine. ![]() This is more likely to happen on older sewing machines that have an inner wheel on the handwheel to engage your bobbin winder. Be careful not to bump your bobbin winder while you sew because your sewing machine will stop working suddenly or start making a knocking noise. If your bobbin winder is engaged, your sewing machine will not sew properly. Clean your sewing machine frequently to ensure it works properly and does not make a funny noise. ![]() This often manifests itself with a knocking noise as your needle enters and exits your bobbin case. It can get in the way of your needle and prevent the hook in your bobbin case from forming stitches properly. Lint builds up in your bobbin case as you sew. ![]()
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