my bobbin will not tighten as it sews. I keep playing with the tension and it still comes out very loose. I have went from tension 0-9, and the stitch is bunched up on the bottom.

charlyn sims, January 2009

Hello Charlyn,
Set the top tension between 4 and 5, you should be able to pull the tension on the bobbin through with some resistence, if it is too loose tighten the screw on the bobbin case about a quarter of a turn at a time clockwise and test until you get it right, make sure you have your bobbin in the correct way round so the bobbin turns anti clockwise.
Ken

drivewithken@blueyonder.co.uk, January 2009