PRS100
FAQs & Troubleshooting |
The thread tension is incorrect.
There could be several reasons why the tension is incorrect.
Check the following points or issues.
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The upper thread is not threaded correctly.
Check the thread path, and then thread the upper thread again.For details, see "How do I thread the machine? (Threading the upper thread)" .
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The bobbin thread is not correctly threaded.
Correctly thread the bobbin thread.For details, see "How do I install the bobbin wound with thread? " .
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The lower thread tension is incorrect.
Adjust the tension of the bobbin thread.
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Bobbin thread is incorrectly wound.
Use a correctly wound bobbin.
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Needle is turned, bent or the point is dull.
Replace the needle.
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