24
The bobbin
thread
breaks.
The needle
breaks.
The bobbin thread is not
threaded properly or is not
positioned properly in the
bobbin holder.
Lint has collected in the
bobbin holder.
The thread is wound
loosely on the bobbin.
The needle and/or thread
are not suitable for the
fabric being sewn.
The bobbin is damaged
and does not turn
smoothly.
Re-thread the bobbin thread and
make sure to insert the bobbin
into the bobbin case so that the
thread is running in the clockwise
direction.
Check if there is any lint collected
in the bobbin case. Clean with the
lint brush.
Re-thread the bobbin.
Choose a needle and thread type
suitable for the fabric.
Replace the bobbin.
The needle is bent or
blunt or incorrectly
inserted.
The Presser foot is not
attached correctly.
The needle and/or thread
are not suitable for the
fabric being sewn.
The needle is bent or
blunt or incorrectly
inserted.
Stitches are
skipped.
Re-attach the Presser foot.
Choose a needle and thread type
suitable for the fabric.
Replace or re-insert the needle.
Replace or re-insert the needle.
Issue Potential cause Solution
Summary of Contents for ULTRA-STITCH SM-1100
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