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?

The winder ring has most likely broken or come off. This part is not easily installed by a home user as the machine has to the taken apart to replace it.

I opened up my machine to find that the bobbin winder wheel (little black ring) had totally turned into black sludge in my machine. It is very gooey and hard to remove. I ordered the part from sewingpartsonline.com and replaced the ring. It is still not working..... ugh

you may need to take it in for repair. Try spinning your winder spindle. It is possible the spindle has seized and the motor is trying to work to hard to spin it. If it is seized you could try some natural lubricator or WD But you would need to make sure you don't spray any on any other parts other then the metal spindle itself....Hope this helps

Machine Tech

I had the same problem when opening my machine. The problem is a screw underneath the bobbin winder area. Pull the bobbin base off and then gently pull up the bobbin winder assembly from under the front cover. You will see a screw in the corner to remove so that you can complete the task. I had to purchase a service manual and then I had great success with replacing the bobbin winder "tire" (Bobbin Winder Tire, Babylock, Brother #X55238051 at sewingpartsonline.com - $3.99!!)
My bobbin winder works like a charm now. Sewing Parts Online Search

no idea... did you lock thread onto bobbin so it holds to wind?

Mine stopped working too. Gave up and wound bobbins by hand for a while until I broke down and took the machine apart -- an ordeal to figure out. I found that a pliable ring on the winder was completely disintegrated (gummy plastic-like stuff). An online search found this -- a bobbin "tire" which I THINK is the part I need: http://www.sewingpartsonline.com/bobbin-winder-tire-brother-x55238051.aspx. Hope this helps. --Also cleaned all the lint out when I had the machine opened up. They don't make it EASY!

Mine stopped working too. Gave up and wound bobbins by hand for a while until I broke down and took the machine apart -- an ordeal to figure out. I found that a pliable ring on the winder was completely disintegrated (gummy plastic-like stuff). An online search found this -- a bobbin "tire" which I THINK is the part I need: http://www.sewingpartsonline.com/bobbin-winder-tire-brother-x55238051.aspx. Hope this helps. --Also cleaned all the lint out when I had the machine opened up. They don't make it EASY!

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!

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