53Instruction book Lily 555/545
Irregular bobbin winding
The machine is not correctly thread-
ed for bobbin winding. See page 12.
The fabric puckers
The upper thread tension is too
tight. See page 14 for correct thread
tension.
Use the correct presser foot as re-
commended by the display.
The bobbin thread breaks
The bobbin thread may be incorrec-
tly threaded. See page 13.
The stitch plate hole is damaged.
See "Upper thread breaks".
Irregular thread tension
This may be due to poor quality
thread. When sewing with cotton
thread, increase the thread tension.
The hole in the stitch plate may be
chipped and have sharp edges. We
recommend that you replace it.
The upper thread breaks
Check the thread spool to see that it
has not caught in any way.
The needle eye may have sharp
edges which cut the thread. If so,
change the needle. See page 16.
The upper thread is incorrectly th-
readed. See page 10.
The upper thread may have too
much tension. Refer to page 14.
Fault-fi nding
Always start by checking the
needle
Always start with a new needle as
soon as you discover that a stitch is
not what you expected. Test sew on
a scrap of the fabric you are sewing.
Check that you have chosen the cor-
rect needle and see that it is correc-
tly inserted. See page 16.
Unattractive stitches
The thread tension is not correct.
See page14. Make sure that the
thread is not catching. Certain thread
spools are unsuitable for spooling
from the horizontal spool pin. Try
instead with the vertical spool pin.
The machine may be incorrectly
threaded. Be sure to place spool
holders correctly.
The correct threading is shown on
page 10.
Wrong bobbin thread. It should be
of the same thickness as the upper
thread except when sewing embroi-
dery.
Fault-fi nding
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