Question about PfaFF Creative 7570

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Pfaff 7570 bobbin tension

I have owned this machine for several years and this is the first time I have had a problem with the bobbin tension. It seems to be tight enough when I **** it in fact it seems almost to tight but when I sew a straight test strip the top stitches are looped underneath and you can pull the bottom thread straight out. If you do more than 3 inches it will start to gather and then break the bobbin thread. Is this adjustable or am I going to have to get a new bobbin? I haven't sewn in a few months but I would not think that would be the problem. I have also cleaned and oiled it. Thanks for your help. Sandy

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  • Anonymous Mar 16, 2014

    Pfaff 4371 bobbin loops on the bottom, top is no problem

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1 Answer

I need to access the tension plates on my Pfaff creative 7570


To access the tension disks, remove the top of the machine as follows: 1. With the carrying handle raised, remove the cover (the piece that has all the stitches pictured). 2. Unscrew 2 screws completely; one is in the depression where the thread spool goes and the other is right behind the bobbin winder. 3. pull straight up. You may have to jiggle it a bit. 4. you should be able to see the tension disks from here.

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My Pfaff sewing machine has started to loop the top thread underneath. Tried fixing the tension on the bobbin thread as they state in the manual, but the problem still persists. Any suggestions?


If the thread is looping underneath, you're top tension may be too loose or the thread may not be in the take-up lever. If it's looping on top, double check that the thread is in the bobbin tension or that the bobbin tension isn't too loose.

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Thread tension. Beware of adjusting the bobbin screw. Pfaffs maintain their tensions just fine without adjusting the bobbin tension, unless you're using some crazy thick or fine thread. If you must change your bobbin tension, you would be well-advised to buy an extra bobbin case, because re-calibrating your tensions after changing them can be less than fun.

Increase your top tension, and your looping should cease. I normally keep my tension around 4.5. Also make sure you're using a good quality thread, and that there's nothing in the upper tension assemblies. Sometimes a tiny piece of debris can keep the top tension from applying enough tension, so turning the machine off and blowing some canned air in there can help as well.

Good luck,

-R

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Check also this links, hope they can help you:

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Thanks
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