Question about Sport & Outdoor - Others
Posted by Anonymous on
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Posted on Jan 02, 2017
Viking bobbin case tension adjustment:
When the bobbin runs out, sometimes it bends the bobbin case tension spring. Then tension is too light. Take the bobbin case out of the machine. Tie the loose bobbin thread to the Designer 1 needle plate. Insert the bobbin in the bobbin case. Here’s the tricky part set the bobbin case on the table as if it’s in the machine (Bobbin is visible and sitting horizontal to table top) threaded as if sewing and loose end tied to needle plate (that is removed from the machine). Lift the bobbin case off the table rotate it so that the flat side of the bobbin are vertical to the table and no longer horizontal. Have the bobbin case oriented so that the thread coming out of the bobbin case sprint (slot area where it is put for sewing) is at the top. Lift it high enough that the needle plate is lifted from the table. It should not release thread unless you shake it gently and then a very small amount of thread. The needle plate is the exact weight resistance your bobbin case should have on the thread.
Posted on Mar 19, 2009
SOURCE: Top tension adjustment
Believe it or not, most computerized machines have an automatic tension. This works well providing, the thread is thru the tension wheel setup.
But for further reference,
loops on the bottom-- problem on the top.
loops on the top--problem on the bottom.
Posted on Apr 24, 2009
SOURCE: sewing machine tension
Hi. The upper tension is too loose (even tho it looks ok). If the upper thread is too loose, it can't pull the bobbin thread up to properly form the stitch and you get those messy 'birds nest' on the bottom side of the fabric. I posted a Tip on Adjusting Tension--read that and adjust your upper tension.
Posted on Aug 02, 2010
Testimonial: "Thanks! That does help. Now I'll have to find your tip on Adjusting Tension =)"
I found a free manual and parts for my Toyota 9090 on this site. http://www.aisin.fr/index3.php?language=en
The only problem is that the manual is in French but some are also available in English. I found it useful for the diagrams etc.
Try the online guides as well as they give help on adjusting tension, replacing bobbins and needles etc.
Posted on Aug 23, 2010
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