Singer 7442 Mechanical Sewing Machine Logo
Posted on Apr 24, 2010
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Re-curring loose bobbin case

My mum bought me this machine brand new- and after a few hours of use the bobbin case is not sitting in the metal casing tightly, causing the thread to loop and bunch up around it, and on the underside of the fabric. I have tried re-threading it again and again, and taking the whole thing out and re-fitting it. It seems to stay put for 30 seconds of sewing then comes loose again. Is this something a Sewing Tech. can fix (permanently) or will it keep happening?

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  • Posted on Apr 24, 2010
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According to the manual, this is a drop-in bobbin.

If the bobbin case came loose, the needle would probably hit it and brake.

Take the bobbin out.

Turn of the power and remove the needle plate (under the presser foot).

Raise the needle to it's highest position and lift out and reset the bobbin case into the shuttle. This should be in the maintenance section of the manual. The bobbin case should fit snug.

Make sure the thread is feeding from the bobbin, counter-clockwise and through the guides on the bobbin case.

For a rotary bobbin with a metal bobbin case.

Remove the bobbin case. Make sure the thread is feeding clock-wise and through the guide on the side of the bobbin case.

Raise the needle to it's highest position - this puts the hook at the lower left. Left the tab on the back of the bobbin case and slip the bobbin case back into the shuttle with the "arm" straight up. You may have to move the bobbin case a bit to the left or right for it to snap into place.

If the problem persits, take the machine back to the dealer - there should not be a charge for fixing this as it is brand new - keep your receipt and warranty information at hand.

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