28
ENGLISH
TROUBLE SHOOTING
PROBLEM
CAUSE SOLUTION
The stitches form loops • The top thread has not been threaded through the
needle correctly.
• The bobbin thread has not been threaded into the
bobbin case correctly.
• Thread the needle from the front to the back.
• Thread the bobbin thread into the bobbin case correctly (see
page 12).
The stitches shrink or
the fabric puckers
• The needle is too big for the fabric. • Use a smaller needle.
The fabric is not fed
evenly through the
machine
• The quality of the thread is not good enough.
• The bobbin thread has not been threaded into the
bobbin case correctly.
• You pull the fabric while sewing.
• Use a better thread.
• Thread the bobbin thread into the bobbin case correctly (see
page 12).
• Let the machine feed the fabric through
automatically.
The sewing machine
is noisy and sews with
difculty
• There are traces of uff and oil in the feed dogs or
needle holder.
• The needle is damaged.
• Clean the feed dogs and needle holder (see page 25).
• Fit a different needle.