Originally Posted by ontheriver

Looked in my Mega manuel. for top thread breaking these are trouble shooting guides. 1. needle thread not threaded properly ( thread goes in needle from left to right) 2. needle thread tension is too tight 3. needle bent or blunt 4. needle incorrectly inserted 5. needle thread and bobbing thread are not under presser foot when starting to sew. 6. thread to heavy or fine for needle. I also found if the needle is not threaded from left to right it will unthread itself. to adjust thread tension just turn the white knob on the front of the machine a click or two either way until it is where you want it (not the white knob on the top of the machine). I am quilting a lap quilt right now, my tension is on 5. That is where it was when I bought it, I have never had to adjust it. Hope this helps, I love my Mega Quilter!!!!! I have it on a frame and it works great for what I quilt. I had it on table before I bought frame and is just as great that way. IF the thread breaks while it is on the frame I have found it sometimes is the speed at which you are sewing in combination with the speed at which you are moving the machine. It takes practice to find your "sweet spot."