Question about Brother CS-8150 Computerized Sewing Machine

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Can't wind the bobbin

I have a Brother CS 8150 computerized sewing machine and can't get the bobbin to wind! It was working fine, then suddenly, the machine thinks it's winding but it just makes a whirring sound and doesn't engage the bobbin winding mechanism. Can I get inside the machine to get this to "grab"??? This is really dumb because I just want to sew a straight line! Thanks, Lani Reinhart bobbin not winding

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  • moamba Jul 30, 2008

    I have a CS-8060 but the same problem. I have wound the bobbin several times in the past without problem, but now the bobbin doesn't move when set up. It just makes the sound as if it is moving. But nothing moves. I have checked and doubled checked each step and I can't find anything I've done wrong. Besides I have done it without incident in the past.

  • laksravi2002 Oct 31, 2008

    i have BrotherCS80 machine .Im trying to wind a bobbin the motor is running but the bobbin isnt .earlier it was working i hadnt used it for the past one year for some reason.can anyone help me in fixing it.thanxs in advance

  • flyred77 Nov 10, 2008

    Currently we have the machine mostly apart and a small piece is missing that causes the bobbin stem to turn. it must be inside the machine somewhere and it is most likely platic with very small teeth that meet the teeth on the wheel.
    However I admit that it happened when once again the thread wrapped around the stem under the small plastic disk. I have had this problem repeatedly and had to remove the disk and clean up a tangled mess. This time it quit working for good.


  • Anonymous Mar 22, 2014

    I was sewing and the machine stopped working. There is no error message or sound. I have checked the bobbin compartment, cleaned, unplugged and switched it back on. It has come on for a moment or two but then goes right off again. This is a new machine, I have only had it for a month.

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Hi again,

Well we finally downloaded a service manual that cost a few bucks, then finished getting the machine apart, then found a small rubber O-ring that had obviously gotten hot when spinning after the tangling of the thread on the bobbin stem. You could see where the heat had melted tiny teeth marks in the ring and it was stretched out of shape. It and yours too will need to be replaced.

If you or someone you know is mechanically inclined, you will need to take five screws out of the back including a hard to find one under the foot raising lever (lower the foot), then one form the front that is under the thread cartridge, and you will have to remove the bobbin winding plate cover which is held by one small screw, and then remove a small screw from the support bar.

Good luck!


Posted on Nov 10, 2008

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I have a CS 8150 and have had the same problem, but I found that the bobbin was not lock on to the winder correctly and that was why I heard to whirring but no thread was winding onto the bobbin. In addition check under the winder to see if thread has been wrapped around the spindal. It seems that the thread had jump the winder and ended up under wrapped around the spindle also did that and it as a pain to get the thread out but I did with a lot of patience.

Posted on Sep 15, 2008

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Bobbin will not lock on bobbin spindle, what can I do?

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1 Answer

Bottom thread from theh bobbin is in big loops.


Problem with Brother CS-8150 Computerized Sewing Machine
bottom thread from theh bobbin is in big loops.

I have a CS-8150 as well -it was fine until I decided to clean the shuttlecock and I thought I had put it back correctly. However, it was after replacing the shuttlecock in place that my bobbin thread was making big loops and no matter what tension it kept doing it. So I removed everything out of the bobbin area. Cleaned and made sure that the shuttlecock was exactly in place as per the manual. Guess what it does not make big loops any more.
Just a suggestion.

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Ive had this same issue. Im still not sire what causes it but when I put in a new bobbin and fill it all the way with thread, it works fine. Hope this helps.

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My bobbin winder stopped working on my Brother CS-8150. spindle locks in, motor runs, but it seems that the winder is slipping. Can this be adjusted?


I think that I would call Brother at 1-877-276-8437 and ask them if this is a warranty issue. They may have a quick fix for you.

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1 Answer

How to thread the bobbin


Do you have a manual?
There is one available free to download on the Brother site.
http://www.brother-usa.com/ModelDocuments/Consumer/Users%20Manual/UM_CS_8150_EN_183.PDF
Pages 24-27 of the PDF file show how to wind the bobbin and pages 28-29 show how to install it.
Hope this helps!

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Double check to see if the bobbin is in upside down and the thread is feeding from the bobbin spool in the wrong direction.

I did this once after several years using the same machine, some days are just not as easy as they should be!

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Hi, thank you for using FixYa! I don't see a model PS-33, however; you posted in the CS-8150 machine section, the link to the manual for a CS-8150 machine is attached. It has a section for winding and installing the bobbin and another section for upper threading. If your machine is not the CS-8150, please comment with the correct model number (PS machines start at number 1450 and increment upwards). If this is the correct manual, would you please take minute to rate this solution? Thank you! Gregg

http://www.brother-usa.com/ModelDocuments/Consumer/Users%20Manual/UM_CS_8150_EN_183.PDF

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1 Answer

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If you or someone you know is mechanically inclined, you will need to take five screws out of the back including a hard to find one under the foot raising lever (lower the foot), then one form the front that is under the thread cartridge, and you will have to remove the bobbin winding plate cover which is held by one small screw, and then remove a small screw from the support bar.

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1 Answer

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Checking to see if in fact that the bobbin shaft is turning. Run it without any bobbin on the bobbin shaft. Make sure that it is push over in the correct position and run it. I checked on mine and it does make the whirring sound and the the shaft does spin. Also check underneath the shaft to see if there is any thread wrapped around it. ( I had problems with that in the past). I hope this helps,

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2 Answers

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Check to make sure that the bobbin is locked onto the winder. If is not locked on then nothing will move. I know I had this problem as well and found that the bobbin must be locked on the winder.

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