Question about Sewing Machines
Unfortunately yes, it may have caused misalignment and caused it to bind momentarily, and this may cause damage indeed.. It is a little unusual, but some machines are very delicate and tolerances are finely setup. You most likely need it looked at by a professional.
Posted on Jul 20, 2010
-Carefully watch the loopers as you turn the wheel to see if the lower looper is rubbing or catching on anything.
-While turning the wheel do you see a tension point where the thread is pulling?
- Is the thread old? Thread has a shelf life and can get old and brittle. Change the threads around just to make sure.
- Have you "flossed" the thread through the tensions when you threaded them to make sure they are seated properly in the tension disks?
- Is there a bur or "pinch" in the threading areas that is catching the thread. Gently pull the thread back and forth at each location to see if anything "grabs" at the thread.
- Have you cleaned it and kept it dust free? Sometimes lint can build up in strategic locations and cause problems. Use a lint brush and canned air to remove lint. (Make sure you use the canned air to blow away from the machine as much as possible instead of into the machine.) Check out f screws holding both lower and upper looper are loose or tight.If all the things checked out proper then its quite possible that the loppers have gone bad and it needs replacement. Get it replaced. Upper Looper:
Basically when the needles are at their highest position, the upper looper should be underneath the needles if you are looking straight on, but slightly in front if you are looking from above. ton the sample machine the looper should be 1mm in front of the needles.
The lower looper seems to belong exactly horizontal.
When the needles are at the lowest point the lower looper is supposed to be a certain distance from the left needle, for the sample machines it was 7mm. The needles do pass between the little pinchers in front of the looper.
When you rotate the handwheel the lower looper and upper looper's will pass very close to each other, they almost seem to fit together like a puzzle. There is probably a specified distance for this as well.
Finally it is important to remember that when you thread the machine the thread that goes through the lower looper lies on top of thread that goes through the upper looper. If you thread the machine and you can't get the lower looper thread above the upper looper thread then its not going to work.
Thanks. Keep updated for any more query. You can rate this solution and show your appreciation.
Posted on Jul 19, 2010
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Posted on Jan 02, 2017
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