How do i replace the tension disc's in singer 1120

Did you happen to reload your bobbin and then it started shortly there after?

Maybe try a different fabric, thread, and bobbin, just to test the machine.

Reduce tension. Perhaps it is very thin - or cheap thread? Or very old thread?
If so, replace with good thread.

If that is OK, them try to lessen the tension.

Moses

The 1120 uses the Class 15 bobbin; either the metal generic bobbins or the plastic ones (including those with the Singer brand name) will work. One vendor has the following: http://www.sewingpartsonline.com/bobbins-class-15-metal-10-pack.aspx and http://www.sewingpartsonline.com/bobbins-singer-10pk-81348.aspx . If you ever need to check for other accessories for your machine, see http://www.singerco.com/accessories . Enter your model number in the search box partway down the page and press enter. You'll see the entire list of available accessories for your Singer.

I hope this helps.

Cindy Wells

Hello, Here is the website for the maint. manual you need too do the fixing of the tension problems. http://parts.singerco.com/IPsvcManuals/306W25.pdf

Try sewvacdoctor.com and refer to handy problem list. Click on it for answer. Hope this helps.

what tension do you have your machine set at? I use 3 but your machine may need less. try that

Are you sure that you have an 1120 because I looked up your manual (it is free on www.singerco.com under the customer support tab) and it is not just a straight stitch machine. If, it is not an 1120 put your correct number in and read the manual. Look on the back of your machine for your model number.

Deep breath and start at the beginning, make sure the presser foot is up before you thread the machine, top tension should be about 4 or 5, make sure the thread has gone between the discs, make sure the bobbin is turning anti clockwise in the bobbin case, you should only just be able to pull the thread through with slight resistence, if it is too tight loosen the scew on the bobbin case about a quarter of a turn and test, repeat if you have to, remember that Singer machines do not work well with thread that is not mercerised, if the thread is not being pulled through at all then the chances are the machine will need retiming.

Slightly reduce upper thread tension. Good Luck

Have you checked your bobbin, mine sometimes gets the needle thread stuck underneath the bobbin and it all gets really tight and won't let the needle go down enough to sew.