Trouble-Shooting - Pfaff select 150 Owner's Manual

Trouble-shooting

The machine skips stitches
The needle is not properly inserted.
The wrong needle is inserted.
Needle is bent or blunt.
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 too-long 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 installed.
Seam is sewn unevenly
The tension needs adjusting.
Thread is too thick, slubbed or hard.
The bobbin thread is unevenly wound.
Thread bunching at top or bottom side of
fabric.
Push needle fully upwards, at side
facing the back.
Use a needle system 130/705 H.
Insert a new needle.
Check how machine is threaded.
Use a larger needle.
See above.
Adjust thread tension.
Only use good threads.
Use needle with large eye (System 130
N).
Insert new needle and push fully in.
Insert new needle.
Insert new needle.
Let the machine feed the fabric.
Only guide the fabric lightly.
When you insert the bobbin case, push
it fully into the stop.
Check top and bottom tensions.
Only use perfect threads.
Do not wind thread free-hand, but run
it on through the winding tension.
Thread up correctly. Check needle and
bobbin thread tensions.
Maintenance and trouble-shooting 41