Question about Brother CS6000i Computerized Sewing Machine

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Difficulty adjusting tension to avoid bobbin looping

I have a Husqvarna Sapphire 870 that adjusts tension automatically according to thickness of fabric. I have chosen woven heavy and am using 40 wt thread in bobbin and a heavier machine quilting thread on the to.
I am able to adjust the top thread tension digitally, and have tried increasing the tension from 4.6 to 6.0. incrementally. The looping is reduced a bit, but not entirely. I am not able to adjust the bobbin tension on this machine.
Any ideas would be appreciated.

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I am having trouble sewing anything and my thread is breaking! I have a viking and it does 24 different stitches! I have yet to be able to do one of them! This is driving me crazy! My bobbin just sits in the bobbin holder no wrapping or anything! Is this the way it should be? Please help very frustrating to have a new machine and not use it!

Posted on Jan 31, 2013

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It sounds like your bobbin tension is too tight. to adjust bobbin tension, remove bobbin case (remove needle plate first) and adjust bobbin tension screw on side of case until bobbin thread has a slight resistance as you pull it through the bobbin case.

this will be trial and error until you get best result. you should always try and match top and bottom threads. if the top thread is quite thick you may have continue to increase needle thread tension until balanced.

scott

Posted on Jul 26, 2009

  • Nicki davis May 09, 2013

    Thanks my machine has been a crock since i bought it 3 years ago and finally got it to sew thanks

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Posted on Jan 02, 2017

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