Sewing Problems And Their Solutions - Pfaff ClassicStyle 2025 Owner's Manual

Maintenance

Sewing problems and their solutions

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