DURKOPP ADLER 650-10 Operating Instructions Manual page 159

Troubleshooting
Operating Instructions 650-10 - 03.0 - 08/2016
Meaning Possible causes
Loose stitches • Thread tensions are not
adjusted to the sewing
material, the sewing
material thickness or
the thread used
• The needle and hook
threads are not threaded
correctly
Needle • Needle thickness is
breakage unsuitable for the sewing
material or the thread
Seam • Residual tension is too
beginning tight for the needle
not secure thread
Remedial action
• Check thread tensions
• Check threading path
( Operating Instruc-
tions, Operation)
• Use recommended
needle
• Adjust residual tension
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