Dürkopp Adler 1767 Service Instructions Manual page 124

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Error
Missing stitches
Loose stitches
Needle breakage
122
Possible causes
Needle thread and hook
thread have not been
threaded correctly
Needle is blunt or bent
Needle is not inserted
correctly into the needle
bar
The needle thickness
used is unsuitable
The reel stand is installed
incorrectly
Thread tensions are too
tight
Throat plate, hook or
spread have been
damaged by the needle
Thread tensions are not
adjusted to the sewing
material, the sewing
material thickness or the
thread used
Needle thread and hook
thread have not been
threaded correctly
Needle thickness is
unsuitable for the sewing
material or the thread
Troubleshooting
Remedial action
Check threading path
Replace the needle
Insert the needle correctly into the
needle bar
Use recommended needle
thickness
Check the assembly of the reel
stand
Check thread tensions
Have parts reworked by qualified
specialists
Check thread tensions
Check threading path
Use recommended needle
thickness
Service Instructions 1767 - 00.0 - 12/2016

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