Machine trouble shooting question

Evening folks,

I recently enherited a sewing machine from my grand-mother (she was 88). The machine is an OMEGA super 900, it's about 30 years old. Not a grand machine but a good little work-horse. ( my brother got the good one my granny had enherited from her sister-in-law a few years before a 50 year old Singer with all the trimmings , don't know the model number).

Anyway, I've been mucking about with it for a few months learning to use it , and trying to adjust things that should only be adjusted by a professionnal and I must say that I am not doing all that bad considering. I have done little more the repairs and a few little craft project ( I have a bunch of new pot-holders and covers for my printers :-)).

Ok, here is my question:

sporadicaly a thread will bunch up on the underside of the fabric. Having used different color threads I found out that the thread bunching up is the upper one ( ie the one in the needle. This mostly seem to happen when I am sewing at low speed ( which is already a little fast for me ). It corrects itself and then happends again a bit latter , or not.

this seems to happen regardless of thread tension, fabric thickness or thread type.

Does anyone have any suggestion on how to resolve this problem ?

Thanks

Jean (boy)

PS , if anyone has an english user manual for this machine would you make me a copy , I have a very badly done french version and I am quite sure that the english one has to be better .

Reply to
Jean
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It could be lint, or a piece of thread, getting between the tension disks. This reduces the tension. Run a piece of fairly thick, unwaxed dental floss, dipped in 99% rubbing alcohol back and forth between the disks. This should remove any dirt there.

It could also be something in the hook area that's catching the thread, possibly a burr on the hook or bobbin case, or a needle pick in the hole of the needle plate. Burrs on the hook and bobbin case can be smoothed with very fine sand/emery paper. Burrs/needle picks on the plate can be harder to remove. A small round file, followed by the sand/emery paper, can remove them, but it takes a bit of time.

gwh

Reply to
w.d.hines

Agree with cleaning the tension disks - they do catch a piece of thread or lint sometimes. Also make sure that you presser foot is in the "down" position, and check your tension disks to make sure that they release when the foot is up, tighten when the foot is down. There's a small pin that controls that, and it can get stuck, especially with old oil on it.

For burrs in the hole of the needle plate, I make narrow strips from a piece of crocus cloth and thread it through the hole and rub it back and forth, almost like flossing it, being sure to turn it to hit 360 degrees. You can get crocus cloth at the hardware store. I have also been known to use the fine side of a nearly worn out emery board in a pinch.

Joanne

Reply to
Joanne In Stitches

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