SunStar SPS/ D-B1254 Series

Questions and Answers

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Shelly EverettJul 30, 2025
Why is the thread constantly cutting on my SunStar SPS/ D-B1254?
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  Douglas RamseyJul 30, 2025
  If the thread keeps cutting on your SunStar Sewing Machine, it could be due to several reasons: * The thread might not be inserted correctly; ensure it's properly inserted. * The needle might be installed incorrectly (height or direction); reinstall it. * The needle could be damaged (bent, cracked, or with an abrasion); replace it. * The upper or lower thread tension might be too high; adjust the tension. * The take-up lever spring's tension and stroke might be excessive; adjust them. * There might be a crack on the shuttle surface spring's controlling hole; replace the shuttle surface spring.
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Tina AtkinsAug 3, 2025
What to do if my SunStar SPS/ D-B1254 is skipping stitches?
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  Donna JohnsonAug 3, 2025
  If your SunStar Sewing Machine is skipping stitches, it could be due to several factors: * A bent needle may be in use, so replace the needle. * The needle size may be incorrect for the thread being used, so replace the needle with the correct size. * The needle may be installed incorrectly; try reinstalling it. * The timing between the needle and shuttle might be off; readjust the timing. * The gap between the groove and shuttle point may be improper; readjust the timing. * The take-up lever spring may have excessive tension and stroke; adjust the tension and stroke.
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David BoothAug 7, 2025
How to fix error in trimming on SunStar SPS/ D-B1254?
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  Daniel MeyersAug 7, 2025
  If your SunStar Sewing Machine isn't trimming correctly, it could be due to: * Laxity of exchanging tension between movable mes and fixed mes: Readjust the tension of fixed mes. * Abrasion or cracks on the blades of the movable mes and fixed mes: Replace the movable mes and fixed mes. * Incorrect positioning of the trimming cam: Readjust the position of the trimming cam.
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cjohnsonAug 11, 2025
Why am I getting an error in thread tightening on my SunStar SPS/ D-B1254 Sewing Machine?
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  lisajonesAug 11, 2025
  If you are experiencing errors in thread tightening on your SunStar Sewing Machine, it could be due to: * Weak tension in the upper thread: Readjust the tension of the upper thread. * Weak tension in the lower thread: Readjust the tension of the lower thread. * Improper timing for the needle and shuttle: Readjust the timing for the needle and shuttle.
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hwilliamsAug 16, 2025
What causes a needle to bend on a SunStar Sewing Machine?
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  Victor YoungAug 16, 2025
  If your SunStar Sewing Machine's needle is bent, it could be due to: * Damage on the needle (bending, cracks, abrasion, or transformation of the tip): Replace the needle. * Incorrect installation of the needle: Install the needle properly. * Contact between the needle and shuttle: Adjust the distance between the needle and shuttle.
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Rachel LittleAug 20, 2025
Why does my SunStar SPS/ D-B1254 Sewing Machine have a bad stopping position?
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  Natalie GibbsAug 20, 2025
  If your SunStar Sewing Machine has a bad stopping position, it might be caused by: * Slackness of the main drive belt. Adjust the belt tension. * Improper synchro position. Adjust the setting position of synchro.
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Amanda JohnsonAug 25, 2025
What to do if there is an error on operation or drive of SunStar SPS/ D-B1254 Sewing Machine?
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  Dr. Aaron JohnsonAug 25, 2025
  If you're experiencing an error on the operation or drive of your SunStar Sewing Machine, it could be due to: * Loosening of belt tension or damage to the belt: Adjust the belt tension or replace the belt. * Fuse shortage for main power or circuit: Check the fuse shortage of the main shaft drive motor in the controller box or replace it. * Deviation from the Y and Y limit of the feed bracket: Move the feed bracket to its normal position (inside the limit switch).