Problems — and probable causes – SINGER W1550 User Manual
Page 45
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PROBLEMS — and PROBABLE CAUSES
In most cases poor sewing results are due to a damaged needle. Always examir
needle first before checking other items.
1. SKIPPING STITCHES
* bent or blunt needle
* wrong size needle
* needle inserted incorrectly
* *
* upper thread tension too tight......................................................... ...................
pressure on presser foot too light
2. UNEVEN STITCHES
* bent or blunt needle
* wrong size needle
* incorrect threading
pulling fabric while sewing
* upper thread tension too loose
* pressure on presser foot too light
* loose presser foot
* bobbin wound unevenly
bobbin inserted incorrectly in case
3. NEEDLE BREAKS
* bent needle touches needle plate or presser foot
* needle inserted incorrectly
pulling fabric while sewing
* loose presser foot touches needle
needle too fine for fabric
turning Pattern Selector dial with needle in fabric
4. UPPER THREAD BREAKS
* bent or blunt needle
* incorrect threading
* upper tension too tight
needle inserted incorrectly
needle touches presser foot
* needle eye has sharp edges
* poor quality thread
* knots in thread
* starting to stitch too fast
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