I am having tension problems on an industrial Juki model # LU-562 machine. The tension is going from fine to loose as I sew. When it's loose it's on the top. The bottom is fine.
By Carol I.
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Have you checked to be sure you're using the correct thread and needle for the fabric, and have you adjusted the upper tension with the pressure foot fully raised?
If the above doesn't help, the thread tension changing mid-stitch could be a problem you cannot solve at home.
The tension discs could be worn out OR clogged with lint/thread fluff in a place dental floss won't reach; also, the tension adjustment gear could be worn, or the bottom tension (on the bobbin case, do not try to adjust this at home!) could have been knocked out of place.
Without looking at the machine (I do limited repair and servicing on mostly Singer domestic machines here in the UK), the best advice I can give you is to take this to a qualified repair tech - someone with extensive industrial machine experience.
When was the last time you have the machine serviced? An industrial machine needs the same (if not more) regular servicing as a domestic one but the tech needs to be qualified on an industrial machine - you'd be amazed at how different the insides of a domestic machine is from an industrial one! A qualified tech will have your machine clean, oiled, and repaired so you can get back to sewing - please update and let us know what the problem actually was:)
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