I AM HAVING TROUBLE WITH THE TENSION ON MY BERNINA 153 AND IDEAS?
Lots of possible issues, but first, check your bobbin case. Take the bobbin out and clean around the inside with a cotton bud. Replace the bobbin and hold the thread and let the bobbin/bobbin case dangle free (take care that the bobbin doesn't slip out of the case. The bobbin case should stay stationery. If you **** the thread upwards , the bobbin should unwaind (this is a very very rough guide). If the bobbin unwinds when just holding the thread stationery, screw in the tension screw on the side of the case a fraction until it doesn't. Conversely if it doesn't unwind when jerked, try unscrewing it slightly. The adjustment is fairly critical and should really be done with a proper gauge and weights. If the bobbin tension is OK, are you sure you're threading the top thread properly ... you should always thread through the pre-tensioner, tension discs and takeup arm with the presser foot lifted - this ensures the thread will lay down between the tension discs properly. Put the presser foot down only when you're threading the needle. If the top tension is too high, try cleaning the tension discs - you can do this fairly simply by turning the tension down to 1, or 2 and with the presser foot up, thread some thick wool through the pre-tensioner and tension discs. Drop the presser foot and drag the wool through slowly - this should clean the fluff and muck out of the discs. Failing the above, you may have a problem elsewhere, such as the check spring or maybe even a problem with the hook/shuttle. In this case, you'd be best to have it checked-out professionally. By the way ... when did you last have your machine serviced ???!!! Also, when did you last remove the hook/shuttle, clean round the hook race firmly with a cotton bud and re-oil it ? You may find the latter will cure your problems ! Good luck and get back to me if I can be of any further help.
Feb 08, 2012 |