4645
Upper thread is
not correctly
installed.
Upper thread
tension is too
tight.
Upper thread is
tangled.
Spool of thread is
not correctly
installed.
Needle is bent or
not sharp.
The combination
of needle size/
thread size/fabric
is incorrect.
Lower thread is
tangled.
Bobbin is not
threaded properly
in the shuttle
hook.
Lower thread
tension is too
tight.
Lower threading is
not correct.
Needle is incor-
rectly inserted.
Inferior needle is
used.
The combination
of needle size/
thread size/fabric
is incorrect.
Lint is clinging to
the bottom of the
needle plate.
Threading is not
correct.
Thread tension is
incorrect.
Thread tension is
too tight.
Threading is not
correct.
Wrong needle is
used.
The combination
of needle size/
thread size/fabric
is incorrect.
No
Page 16 No
Page 17 No
Page 6 No
Page 19 No
Page 19
No
Page 16
No
Page 19
No
Page 13
No
Page 6
No
Page 20
No
Page 15
No
Page 19
No
Page 15
No
Page 6
No
Page 20
No
No
Page 16
No
No
Page 6
No
Page 20
SKIPPED
STITCHES LOOP IN SEAM FABRIC
PUCKERS
CONTACT YOUR LOCAL SERVICE CENTER
LOWER THREAD
BREAKS
UPPER THREAD
BREAKS
PERFORMANCE CHECK LIST
Page 15-17
Page 43-44
MAINTENANCE
MANTENIMIENTO