Trouble Shooting - Viking Scandinavia 300 User Manual

Care of your Scandinavia 300

Trouble shooting

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 correct needle and see that it is
correctly inserted. See page 12.
Unattractive stitches
The thread tension is not correct. See
page 10. 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 6.
Wrong bobbin thread. It should be
of the same thickness as the upper
thread except for embroidery.
The needle breaks
The needle can strike against stitch
plate and break. Change the needle.
See page 12.
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 12.
The upper thread is incorrectly
threaded. See page 6.
52
The upper thread may have too
much tension. Refer to page 10.
The hole in the stitch plate may be
chipped and have sharp edges. We
recommend that you replace it.
The bobbin thread breaks
The bobbin thread may be
incorrectly threaded. See page 9.
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.
See page 10.
Irregular bobbin winding
The machine is not correctly
threaded for bobbin winding. See
page 8.
The fabric puckers
The upper thread tension is too
tight. See page 10 for correct thread
tension.
Use the correct presser foot as
recommended by the Infodisplay.
The machine does not feed the
fabric
The stitch length is too short.
Increase stitch length.
The feed teeth may be lowered.
Raise them by turning the dial to
. See page 12.
The feed teeth are full of dust and
dirt. Clean with the brush. See page
51.