I've been using a Singer Heavy Duty 4452 sewing machine and it suddenly stopped sewing properly. It skips several stitches on the top of the fabric and the thread on the bottom is messy and bunched up, then it stops and the needle won't move until I take the fabric out. It does this on both thick and thin fabrics. I'm not sure what the issue is or how to fix it.
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Here are a few easy things to check first:
-- Is the machine threaded correctly?
-- Is the bobbin the proper size? (This is a big problem for me since I pick some up at thrift stores and garage sales; it's hard to tell with the naked eye. I finally just ordered all new ones per my machine's manual).
-- Make sure the needle is positioned fully and correctly to left, right, or center, and tight against the top and back housing.
-- Finally, and perhaps most likely, this could be an incorrect tension setting. Try to move the tension dial a bit both ways, stitch on some scrap fabric, and see if it makes a difference.
Something must have happened to mess up the thread while I was sewing because rethreading the machine worked! Thank you!
Checking if threading is correct is always a good starting point but it's also a good idea to check if your machine needs cleaning.
Cleaning should be set on a regular schedule according to how much you use your machine.
Several things could be wrong:
Your bobbin is inserted backwards
Your upper tension is off
Your lower tension is off
Many sewing problems can be fixed by:
re-threading the machine, checking to see if the needle is inserted correctly and not damaged, checking the bobbin to see if wound and inserted correctly, machine and bobbin tension is adjusted correctly, inside of machine is cleaned and oiled as per manual, and making sure feed dogs are in up position to properly feed fabric under the foot. If these don't help, it may be time for a repairman to take a look at the machine. Good luck and happy sewing.
Thread looping on the underside of the fabric is always an indication that the upper thread is not correctly threaded: the upper thread is not correctly placed in the tension mechanism and has not been threaded through the take-up lever.
If your stitches are skipping on the fabric as you sew, this could be an indication that the needle was inserted incorrectly or something is wrong with the needle.
Make sure that the needle goes all the way up into the needle clamp and that the flat side (at the top section of the needle) is facing toward the back.
I found the user manual manualzz.com/
Skipped stitches
Cause:
1. The needle is not inserted correctly.
2. The needle is damaged.
The machine jams because thread is caught in the hook, because upper tension is not threaded correctly.
Remove the upper thread and bobbin case. Gently rock the handwheel backwards and forwards by hand and remove the thread from the bobbin area.
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