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Before calling for service, check the following items. If the problem still persists, contact the
place of purchase or your nearest authorized dealer.
Upper thread
Lower thread
breaks
Skipped
stitches
Needle
Loose
Seam
gather or
pucker
1.The machine is not threaded correctly.
2.The thread tension is too tight.
3.The thread is too thick for the needle.
4.The needle is not inserted correctly.
5.The thread is wound around the spool
holder pin.
6.The needle is damaged.
1.The bobbin case is not inserted correctly.
2.The bobbin case is threaded wrong.
3.The lower thread tension is too tight
1.The needle is not inserted correctly.
2.The needle is damaged.
3.The wrong size needle has been used.
4.The foot is not attached correctly.
5.The machine is not threaded correctly.
6.The presser foot pressure is not strong
enough.
1.The needle is damaged.
2.The needle is not correctly inserted.
3.Wrong needle size for the fabric.
4.The wrong foot is attached.
5.The needle clamp screw is loose.
6.The presser foot that is used is not
appropriate for the type of stitch that
you wish to sew.
7.The upper thread tension is too tight.
1.The machine is not correctly threaded.
2.The bobbin case is not correctly
threaded.
3.Needle/fabric/thread combination is
wrong.
4.Thread tension is wrong.
1.The needle is too thick for the fabric.
2.The stitch length is adjusted wrong.
3.The thread tension is too tight.
1.Select a finer needle.
2.Readjust the stitch length.
3.Loosen the thread tension.
1.Check the threading.
2.Thread the bobbin case as illustrated.
3.The needle size must suit the fabric
and thread.
4.Correct the thread tension.
1.Insert a new needle.
2.Insert the needle correctly (flat side
towards the back).
3.Choose a needle to suit the thread
and fabric.
4.Select the correct foot.
5.Use the screwdriver to firmly tighten
the screw.
6.Attach the presser foot that is appro-
priate for the type of stitch that you
wish to sew.
7.Loosen the upper thread tension.
1.Remove and reinsert needle(flat side
towards the back).
2.Insert a new needle.
3.Choose a needle to suit the thread.
4.Check and attach correctly.
5.Rethread the machine.
6.Adjusting the presser foot pressure.
1.Remove and reinsert the bobbin case
and pull on the thread. The thread
should pull easily.
2.Check both bobbin and bobbin case.
3.Loosen lower thread tension as
described.
1.Rethread the machine.
2.Reduce the thread tension.
(lower number).
3.Select a larger needle.
4.Remove and reinsert the needle (flat
side towards the back).
5.Remove the reel and wind thread
onto reel.
6.Replace the needle.
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TROUBLE SHOOTING GUIDE
Problem
Cause
Correction Reference