SunStar SPS/B-1507 SERIES

Questions and Answers

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Steven StoneAug 12, 2025
How to improve the thread tightening quality on my SunStar SPS/B-1507 Sewing Machine?
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  Luis RobinsonAug 12, 2025
  If you're experiencing poor thread tightening with your SunStar Sewing Machine, it might be due to weak tension in either the upper or lower thread; try adjusting the tension of the upper and under thread. Also, the timing between the needle and shuttle might be improper; in this case readjust the timing of needle and shuttle.
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William HolmesAug 16, 2025
What causes ineffective sense of upper thread on SunStar Sewing Machine?
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  simmonsdeborahAug 16, 2025
  If your SunStar Sewing Machine isn't sensing the upper thread effectively, it might be due to a bad connection between the take-up lever spring and detecting plate. Clean these parts and adjust the tension of the take-up lever spring and connecting condition of detecting plate. Another cause may be a bad connection of the wire with the thread sensor plate, so reconnect the wire with thread sensor plate.
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Mark HallAug 19, 2025
Why is the thread cutting on my SunStar SPS/B-1507 Sewing Machine?
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  Adam MillerAug 19, 2025
  If the thread is cutting while using your SunStar Sewing Machine, several factors could be at play. Ensure the thread is inserted correctly and the needle is properly installed, paying attention to its height and direction. A damaged needle, indicated by bending, cracks, or abrasion, should be replaced. Adjust excessive tension in both the upper and lower threads, as well as the take-up lever spring. Finally, inspect the shuttle surface spring for cracks, and replace it if necessary.
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Zachary Delgado Jr.Aug 25, 2025
Why is my SunStar Sewing Machine skipping stitches?
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  whitney92Aug 25, 2025
  If your SunStar Sewing Machine is skipping stitches, it could be due to several reasons. A bent or improperly sized needle should be replaced. Ensure the needle is correctly installed. The timing between the needle and shuttle may be off, requiring readjustment. Also, a large interval between the needle groove and shuttle point can cause this issue, so readjust the timing. Finally, excessive tension and stroke of the take-up lever spring might be the cause, requiring adjustment.
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Larry CamachoAug 27, 2025
What to do if the needle is bent on my SunStar Sewing Machine?
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  Melissa JohnsonAug 27, 2025
  If the needle of your SunStar Sewing Machine is bent, there are a few possible reasons. The needle may be damaged with bending, cracks, or abrasion, in which case you should exchange it. Also, check that the needle is installed properly. Finally, the needle may be contacting the shuttle, so you should adjust the distance between them.
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aaronmirandaAug 31, 2025
What to do if I get an error on operation or drive of my SunStar SPS/B-1507 Sewing Machine?
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  John WangAug 31, 2025
  If you're encountering an error during the operation of your SunStar Sewing Machine, it could be due to a few reasons. Check if the belt tension is loose or damaged, and adjust or replace it as needed. Also, examine the fuse for the main power or circuit in the controller box for any shortages, and replace if necessary. Finally, ensure the feed bracket is within its normal limits; move it back into position if it has deviated.
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Kristen HendersonSep 4, 2025
Why does my SunStar SPS/B-1507 Sewing Machine have a bad stopping position?
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  Angela JonesSep 4, 2025
  If your SunStar Sewing Machine stops in the wrong position, it could be due to slackness of the main drive belt, in this case adjust the belt tension. Alternatively, the upper shaft sensor plate or photo sensor might be in the wrong position, so adjust the position of the upper shaft sensor plate or exchange the photo sensor.
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Edward RichardSep 7, 2025
What causes trimming mistakes on a SunStar SPS/B-1507?
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  Chad PhamSep 8, 2025
  If you are experiencing mistakes in trimming with your SunStar Sewing Machine, it could be due to slackness of exchange tension between the moving and fixed mes, so adjust the tension of fixed mes. Groove abrasion on the blade of the moving and fixed mes can also cause this, so exchange the moving and fixed mes. Finally, the trimming cam may be in the wrong position, so readjust the position of trimming cam.