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APPENDIX ——————————————————————————————————————————————————————————————————————————
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254
The needle
breaks.
The area around the embroidery
foot hole is damaged.
1 Scratches or Burrs
Replace the presser foot.
Consult your nearest
authorized dealer.
Sliding surface on hook race is
not smooth. There are scratches
or burrs on it.
1 Hook race area
Consult your nearest
authorized dealer.
The bobbin or bobbin case are
not correctly installed.
Remove and reinstall bobbin
and bobbin case.
p.36, 37
The hook is not correctly
installed.
Consult your nearest
authorized dealer.
The hook stopper is not
correctly installed, the hook is
making a complete rotation.
Consult your nearest
authorized dealer.
The upper thread is not
threaded correctly.
The upper thread is catching
somewhere.
Pull the upper thread by hand
from below the presser foot,
and check that the thread
moves smoothly. If the thread
does not move, it is not
threaded correctly. Thread the
upper thread correctly. Make
sure the thread is caught by the
needle bar thread guide.
p.55-58
The upper thread tension is set
too high. It does not run.
Decrease the upper thread
tension and make sure tension
disc rotates when pulling on
thread.
p.113
A bobbin designed specifically
for this machine is not used.
Use the correct bobbin. p.33
The needle and the hook are not
correctly passing each other.
Hook timing may be OFF.
Consult your nearest
authorized dealer.
There is backlash play (forward/
backward) in the needle bar
case.
Consult your nearest
authorized dealer.
The thread density of the
embroidery data is too fine.
Three or more overlapping
stitches are being sewn.
Using a data design system,
correct the thread density and
overstitching settings in the
embroidery data.
p.136
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