Thread breaks.stitches loosen.
SOURCE: breaking thread
1. Make sure you are using the correct needle and thread for type of fabric and it is installed correctly. Make sure bobbin is threaded evenly. 2. Tread path - make sure the machine is correctly threaded. Then, with your finger, feel for burrs, nicks or roughness on any metal parts that contact the thread. Open the slide plate, remove the bobbin and inspect the bobbin case and hook. Remove the needle plate and examine the needle hole. Sand any rough areas with fine emery paper and blow away grit. If burrs or nicks remain on the needle, presser foot, needle plate or bobbin case, replace them with exact replacement parts, if they remain on the thread guides, take-up lever, bobbin hook or tension regulator, take the machine for professional service. 3. Loosen thread tension by adjusting tension dial. 4. Clean feed dog, bobbin case, and tension discs. Unplug the machine. Use a small, stiff brush to wipe dirt and lint off the machine head and the needle bar area. Raise the presser foot and the needle to the highest position, open slide plate and remove the bobbin and needle plate. brush away dirt and lint from the feed dogs and bobbin case and remove any tangled thread with your fingers. Use a soft cloth to clean between the tension disc on the tension regulator. 5. Also check tension on presser foot
SOURCE: CONSEW 206RB5 TOP THREAD NOT FORMING STITCHES AND BREAKING
you have your thread tension too tight that's why it is pulling the bottom stitch all the way through it looks good from the bottom but not good on top. Its pulled the stitch all the way through the material.
I had my own upholstery shop 18 yrs and tension gets you every time.Just loosen the top tension.
SOURCE: My lowerlooper thread keeps breaking. I can only
The lowerloop thread kept getting cut by the upperlooper.....I rethreaded the machine in order and then made sure that the lowerlooper thread was UNDER the part of the machine that makes the looks the loopings (silver part that comes to a point on the right side of the needles...sorry I don't know what to call it) and the upperloop was ON TOP of the same part.....it started working great. I actually have very nice tight stitches now.
SOURCE: riccar sewing machine keeps breaking thread
Oh yes. GRRRRRR is the word!!! I hope I can help.
In many cases, breaking thread is caused by the upper tension being too tight, so that's something to check.
Another thing is to change your needle. If it's at all bent it can break the thread.
Third thing is to make sure you're using new, high quality thread. Older thread breaks more easily, especially if it's been in the sun.
Finally, clean and oil the machine. A bit of lint in the bobbin area can do all kinds of havoc.
Hope this helps!!
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