Question about Singer 7422

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My thread (not bobbin thread) is bunching excessively on my singer 7422 and can't figure out why.

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  • Anonymous Jun 18, 2008

    Just bought this same machine this weekend. I am having the exact same problem. The top thread is looping on the back of the fabric. I have adjusted the tension every which it can go. I can't get it to work. The machine is threaded correctly, but I can't sew 5 inches before it bunches up at the bobbin and all the lights on the machine go nuts.

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2 Answers

I just recently had the same problem and couldn't figure it out til a second ago. My problem had nothing to do with the tension but with the fact that my TOP THREAD wasn't threaded right. If you look on page 18 of your manual, I discovered I didn't have my thread through the take-up (C#4 image) properly. I hope that helps.

Posted on Oct 07, 2008

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  • 77 Answers

Hi Tammy,

The problem seems to be with the thred tension adjustment lever/screw (it looks something like 2 inverted disc washers clamping each other thru which a section of your thred passes before going to the puller and then subsequently to the needle guide and then the needle. The fundamental principle of all sewing machins ae the same. Check for the tension. It may have become loose. Also check for the rocker on the inside where you place your bobbin. Are the rocker arriving in syncronisation when the needle is at its maximum in side the knotting hole. If not then there must have been a slight play in the assembly. You alone may not be able to solve all these things. But atleast you know what are the possibilities. I suggest you try only what you can do on the outside. As for the rest, you should refer it to an authorised service person.

Good luck tammy.

Posted on May 06, 2008

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