Troubleshooting
Service Instructions M-TYPE DELTA - 00.0 - 12/2019 221
Loose stitches Thread tensions are not
adjusted to the sewing
material, the sewing
material thickness or the
thread used
Check thread tensions
Needle thread and hook
thread have not been
threaded correctly
Check threading path
Needle breakage Needle thickness is
unsuitable for the sewing
material or the thread
Use recommended needle
thickness
Error Possible causes Remedial action
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