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Trouble
From the previous page
9. Material fiber breaks.
Material fibers are broken by the
needle during sewing.
Cause (1)
8-5) Pressing is inappropriate.
8-6) Threading is inappropriate.
9-1) The needle is defective.
9-2) The sewing speed is too high.
9-3) The material is excessively
tense.
9-4) The room humidity is too low.
9-5) The feeding pitch is too small.
Cause (2)
5-A) The presser is floating.
5-B) The parallel level of the presser
is inappropriate.
5-C) The pressure is too low.
6-A) Threading of the needle thread
is improper.
6-B) The needle bar thread guide is
defective.
1-A) The needle heat is too high.
1-B) The needle is too thick.
1-C) The needle tip is blunt.
1-D) The shape of the needle tip is
inappropriate. (Different needle
type)
3-A) The needle hole of the throat
plate is too small.
3-B) The pressure is too high.
3-C) The height of the presser tooth
is too high.
Check and corrective measures
Readjust the position of the presser bar holder.
Replace the presser, or loosen the presser bar
holding screw and correct the foot bend.
Increase the pressure of the presser.
Correct threading.
Try using B1418227T00 or B1418552A00.
Use silicon.
Use a needle as thin as possible.
Replace the needle.
Use a ballpoint needle. (KN, S, J, B, U, Y, etc.)
Reduce the sewing speed. (Prevention of nee-
dle heat)
Use a throat plate with a larger needle hole.
Reduce the pressure as low as possible.
Lower the height of the presser tooth as low as
possible.
Keep the humidity at approx. 65% to prevent
needle heat, electrification, and friction.
Increase the feeding pitch as large as possible.
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