If you are getting loops on the underside of your seam, it is usually the top tension that is at fault. Check that the thread is under tension by pulling the top thread just before it goes into your needle with the pressure foot down (most machines don't apply tension until the pressure foot is lowered).
Check the tension dial - is it set to the middle number? usually 5 if the dial goes from 1-10?.
You can also clean between the tension discs - turn the dial to zero and slide the salvage edge of an offcut of light fabric between the tension discs to remove any build up.
Thread will shed particles of dye and filaments as it goes through the tension discs so you need to clean this area regularly.
Now rethread everything, check the tension dial is back to 5 and try again.
There is also good general sewing machine maintenance guides at www.sewing.about.com which I find very useful.
182 views
Usually answered in minutes!
×