According to the manual for a Standard Rotary, the top tension is to be regulated only when the presser foot is down. It also says that the bobbin tension rarely needs adjusting as is "self-adjusting." Have you tried sewing with two different colors of thread? Is the top thread looping on the bottom? Is the bobbin thread flat? Maybe the tension assembly needs cleaning? Is the thread going between the tension discs (while presser foot is up)? I like the video about upper tension at
https://www.youtube.com/watch?v=WxtQO2XSB4s
Maybe a picture would help diagnose. We like pictures. In order to post pictures on Quilting Board, you will probably need to reduce or compress the picture to a
file size that is smaller than 2MB. How to post images can be found at
https://www.quiltingboard.com/attach...020-01-17-.pdf
Don't forget to scroll over to the far right to find and click on the "
Upload" button.
I have found that only the big red "reply" button works to give me the paper clip icon to work for adding pictures.
Janey - Neat people never make the exciting discoveries I do.
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