Troubleshooting
122 Operating Instructions 967 - 02.0 - 11/2016
Skip stitch Needle is
•blunt
• bent
• not properly inserted
Insert new needle
Needle thread and hook
thread have not been
threaded correctly
Check threading path of
needle thread and hook
thread
Thread tension is set too
firm
Check thread tension
Sewing material is not held
correctly
Check sewing foot
pressure
Needle thickness is
incorrect
Use recommended needle
thickness
Throat plate or hook has
been damaged by the
needle
Have parts replaced
Hook is set incorrectly Service Instructions
Loose stitch Thread tension not
adjusted to
• Sewing material
• Sewing material
thickness
• Thread
Check thread tension
Needle thread and hook
thread have not been
threaded correctly
Check threading path of
needle thread and hook
thread
Thread tension spring not
working
Service Instructions
Needle
breakage
Needle thickness not
suitable for
• Sewing material
• Sewing material
thickness
• Thread
Alter needle thickness
Error Possible cause Remedial action
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