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No.
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Problem
Exam and Adjustment
2.
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The skipping stitch of needle thread
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0
Check the position of needle and needle guard
plate. If there is any problem, adjust it
according to the standard.
1 4
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The needle and up looper didn't cooperate
well or the incorrect up looper position cause
the up looper skipped.
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Check the size of needle and up looper and the
thread output amount of up looper. If there is
any problem, adjust it according to the
standard.
3.
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0
Skipped stitches or unraveled thread
The needle is too thick.
at sewing start
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o
Try using a needle with a count that is one lower
than the current needle.
2
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The sewing speed is too fast at the sewing start.
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Use the slow start feature.
4.
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1.
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o
Thread broken
Incorrect threading.
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According to the threading diagram to
re-threadin~
2.
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0
Incorrect needle installation.
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Reinstall the needle to make the needle slot face
the operator.
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The thread tension is too strong.
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Adjust the thread tension properly.
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Bad thread quality.
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Change to use the proper thread.
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The thread is wider than the needle hole.
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o
Change to use the proper thread or needle.
-38-
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