SOURCE: Janome Memor Craft 10001 bobbin tension
Hi, There is an adjustment on the side of the black bobbin case. Remove the needle plate, to gain access to the case. Lift it out, noting how it is positioned! On the side of it , there are two screws, one is the adjustment screw - its the one that sits out more. To increase tension, turn it clockwise 1/8th of a turn, reassemble and test sew. (make sure the top thread tension is back to where it should be). Repeat if required. DO NOT adjust too much at a time! Good luck
SOURCE: L-344 loose stiching
You need to do a tension assembly test.
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Tension assembly test. To do this test. Pull the thread
through the tension assembly and test it to make sure the tension is working
correctly.
(To do this test, adjust your tension setting to normal or medium or 5 or
something in the middle. Raise the presser foot and pull the thread through the
tension. It should pull easily!! Lower the presser foot and pull the thread. It
should pull noticeably harder.)
If it doesn’t work this way then you probably have a piece
of thread or lint stuck inside the tension discs. To remove it, turn the
tension to 0 zero and raise the presser foot.Using a small screwdriver, open
the space between the discs and spray with canned or compressed air. The stuff
should come out. Do the tension test again to make sure you got everything and
then try sewing again.
sewman7
SOURCE: Bobbin thread tension issues
I cleaned out the lint and now my top thread isn't coming back up to finish the stitch. The thread goes down and catches the bobbin string, but then doesn't come back up. Can anyone help with this?
SOURCE: I have a Janome MB4 and have had so many problems
Hi!
I was having the same problem(s) and I loosened the tension on the bobbin case and switched to prewound paper bobbins and everything sews beautifully.
Hope that helps!
-Donna Jo
SOURCE: upper thread tension too loose even when I dial it up to 9
I suggest that you get in touch with http://www.janome.co.uk/index.php?option=com_chronocontact&Itemid=14 and have a chat with them ...
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