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Where can I buy an upper thread tension assembly for a Riccar-2500 free arm sewing machine and instructions to remove the remaining spindle and spring.
Regards, Peter
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If you are experiencing stitching problems with your sewing machine and serger, try raising the presser foot BEFORE threading the upper thread. This releases the thread tensioner while threading, but when you lower the presser foot, the tensioner is activated to control the thread's tension.
Never remove the upper thread by grabbing the spool and pulling the thread tail backwards through the needle eye, thread guides, and tensioner. To remove the upper thread, clip the thread below the spool, raise the presser foot, then gently grab the thread tail by the needle's eye and pull the remaining thread through.
You may be better off going to google and search "riccar 2910 manual" That way you can follow their detail dorections rather then someone elses and it confuse you. Usually the PDF versions have pictures with it :-)
First make sure the bobbin-winding spindle (located on top of your machine) has been pushed back to the left for sewing.
If it is not in the correct position, the needle will not go down and pick-up your bobbin thread.
Next make sure your needle is inserted correctly, with the flat side facing back.
Also, make sure your bobbin is in correctly
the upper tension disks of your machine are threaded correctly.
Make sure the presser foot is up when seating the thread through the upper tension.
Turn the handwheel towards you only and hold the needle thread lightly.
If this doesn't help solve your problem, the machine may have a timing problem.
The hook pulls the top thread half way around the bobbin case and then the slack arm pulls it the rest of the way around. The slack arm is in the upper part of the machine barely visible on newer machines, but you do hook the thread thru it while threading the machine. If your thread doesn't go thru the tension discs or the tension is very low, then the slack arm has nothing to pull against, like a tug of war where the guys on the other end of the rope let go!
Try pulling on the upper thread before the needle and be sure the presser foot is down (up releases the tension). Adjust the tension and you should feel a difference.
Check the spindle the thread is mounted on and see if it\'s wrapped around it. Sometimes thread will catch and wrap around the spool spindle and break.
Check thread guides to be sure there are no nicks that might be catching the thread or damaging it.
Replace the needle.. a burr in the eye can cause upper thread to break. Needles should be replaced often, modern fibres can be hard on them, they get dull and that\'s no help for anything either.
Make sure the thread spool is mounted on the spindle with the thread coming off as directed in the manual. Some machines only work when the thread feeds in the right direction from the spool.
It can also be a tension issue.. tight upper tension or tight bobbin tension. Bobbin tension may be adjustable manually, but it\'s pretty rare for it be a problem. Upper tension, I don\'t know. I\'ve yet to get into computer machines so am not familiar with how they set upper tension.
But the mechanism that produces the tension can wear out or break and need replacement.
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