Loops on the top stitch .. tried adjusting tension to no avail, changed thread, bobbin .. still having the same problem .. for hours !! ready to toss out the window :(
Don't worry! I'll try my best to help out here. Problem is most likely in bobbin area. Remove bobbin, clean with brush to remove any threads caught in tension discs. Brush the feed dogs (teeth area under your needle plate).Rethread with presser foot in UP position so thread can locate tension slots. I recommend new needle and remember to push it up into needle bar shaft flat side back a's far a's it will go. Tighten needle clamp screw. That press foot must stay raised now while you insert needle And thread it. Tension: Set at 4. Just a very short turn of tension if 4 is not giving desired results. I hope this helps. It's probably very frustrating, I understand, but I know you can remedy this easily. Follow above steps SLOWLY! Jimmy
SOURCE: Top thread stitches correctly but bottom thread loops.
FYI---- Loops on the bottom-- problem is in the threading..
Loops on the top--- problem is with the bobbin.
SOURCE: Needle thread looping underneath, threads not interlocking at all
If the machine is now threaded, lift the presser foot.
Now, pull about 10" of thread through the needle.
The next time you thread the machine, lift the presser foot first.
When the presser foot is up, the tension control opens and allows the thread to "seat" into the control, then when the foot is down the control closes to the indicated setting.
When threading the machine with the foot is down, thread does not enter the tension control and when you start to sew, there is no tension on the thread.
No tension = loosey, goosey, loopy stitches underneath.
Because the lack of tension on the top thread, the bobbin thread cannot lock a proper stitch.
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