7:4
Maintenance
Problem/Cause Remedy
The machine skips stitches
The needle is not properly inserted. Push needle fully upwards. Flat side facing the back.
Wrong needle is in use. Use needle system 130/705 H.
Needle is bent or blunt. Insert a new needle.
The machine is not properly threaded. Check how the machine is threaded.
Needle is too small for thread. Use a larger needle.
Needle thread breaks
See reasons above. See above.
Thread tension is too tight. Adjust thread tension.
Thread is poor or has slubs in it, or has become dry after
overlong storage
Only use good quality threads.
Thread is too thick. Use needle with large eye (system 130 N).
Needle breaks off
Needle is not pushed fully in. Insert new needle and push fully in.
Needle is bent Insert different type of needle.
Needle is too thick or too thin. Insert different type of needle.
Needle is bent, and has hit the needle plate because you
are pulling or pushing the fabric.
Only guide the fabric lightly.
The bobbin case is not properly inserted. When you insert the bobbin case, push it fully into the stop.
Pull lightly on the end of the thread to make sure bobbin case
is secure.
The seam is sewn unevenly
The tension needs adjusting. Check needle thread tension.
Thread is too thick, stubbed or hard. Only use good quality threads.
The bobbin thread is unevenly wound. Do not wind thread by hand. Make sure thread is pulled
solidly into bobbin tension spring. Check bobbin threading
path
Thread loops at top or underside of fabric. Re-thread machine, making sure presser foot is raised to its
highest position. This ensures that needle thread is securely
in thread tension system. Adjust thread tension as needed.
Sewing problems and their solutions
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