DURKOPP ADLER 827 Service Instructions Manual page 118

Error
Skip stitches
Loose stitches
Needle breakage
116
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
assembled 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
Service Instructions 827/827-M - 01.0 - 05/2019
Troubleshooting
Remedial action
Check threading path
Replace 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