You may need to have the bobbin case check, to see if you need a new one or a adjustment is needed.
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: Janome Memory Craft 9500 Troubleshooting
The solution that I found last night was the thread tension. I have never touched the dial, only had it set on 'auto." When I started playing with it, I realized the top thread should be really easy to pull through the machine and it wasn't. I started turning the dial (to 3 or 4) and the thread slid through the machine perfectly. No more birds nest! I really thought it was bobbin initially because of the horrible sound it was making.
SOURCE: JANOME MEMORY CRAFT 5700 INSTRUCTION BOOK
Hi, I downloaded (for free) a copy of the Envision 8006 (and 8007 supplement) manual from the Elna website 2 1/2 years ago. The Envision 8007 is the same as the Janome Memory Craft 5700. I can email you a copy of the manual.
SOURCE: SIMILAR PROBLEM OF TOP THREAD ACCUMULATING IN BOBBIN AREA
it sounds like a needle threading problem. if you have the instruction book, pull yout needle thread off the machine and re-thread as per the book ie presser foot up and make sure thread goes betwen tension discs and up over takeup lever.
to check needle tension is ok, lower presser foot and pull needle thread through needle, the needle thread should be tight enough to bend the needle a little.
goodluck,
scott.
SOURCE: janome memory craft 4000 manual online
You can find it here:
http://ifixmachines.com/index.php?page=shop.product_details&product_id=776&option=com_virtuemart&Itemid=54
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