Troubleshooting
194 Operating Instructions M-TYPE DELTA - 01.0 - 08/2019
Skip stitches Needle thread and hook
thread have not been
threaded correctly
Check threading path
( p. 25, p. 38).
Needle is blunt or bent Replace the needle
( p. 22).
Needle is not inserted
correctly into the needle
bar
Insert the needle correctly
into the needle bar
( p. 22).
The needle thickness used
is unsuitable
Use recommended needle
thickness ( p. 195).
The reel stand is
assembled incorrectly
Check the assembly of
the reel stand
Thread tensions are too
tight
Check thread tensions
( p. 40).
Throat plate or hook have
been damaged by the
needle
Have parts reworked by
qualified specialists
Distance from the hook
to the needle is not set
correctly
Set the correct distance
( Service Instructions)
Loose stitches Thread tensions are not
adjusted to the sewing
material, the sewing
material thickness or
the thread used
Check thread tensions
( p. 40).
Needle thread and hook
thread have not been
threaded correctly
Check threading path
( p. 25, p. 38).
Needle
breakage
Needle thickness is
unsuitable for the sewing
material or the thread
Use recommended needle
thickness ( p. 195).
Error Possible causes Remedial action
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