Originally Posted by EllieGirl
I had to refill the bobbin and before I refilled it everything was going along fine. Since I refilled it though my bottom thread is making big loops. I've decreased the tension, increased the tension, and it keeps doing it. I even cleaned out the bobbin area. Help!
I had the same problem after mother used my machine and broke a needle (tried to do zig-zag without changing the foot). That threw the machine out of timing, and I had loops on the underneath. Had to take it to the hospital for repairs.