DURKOPP ADLER 967 - Sewing Process Errors and Solutions

Troubleshooting
Operating Instructions 967 - 02.0 - 11/2016 121
10.3 Errors in sewing process
Error Possible cause Remedial action
Unthreading
at seam
beginning
Needle thread tension is
too firm
Check pretension
Needle thread was cut at
the wrong time
 Service Instructions
Needle thread tension too
high during cutting
 Service Instructions
Thread
breaking
Needle thread and hook
thread have not been
threaded correctly
Check threading path of
needle thread and hook
thread
Needle is
• bent
• sharp-edged
• not properly inserted
Insert new needle
Yarn is
• knobby
• hard
• too thick
Use recommended yarn
Thread tension is set too
firm
Check thread tension
Thread-guiding parts are
sharp-edged
Check the thread path
Throat plate or hook has
been damaged by the
needle
Have parts replaced