Troubleshooting - Pfaff expression 2034 Instruction Manual

Sewing problems and their solutions
ProblemlCause
Remedy
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.
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.
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.
See above.
Adjust thread tension.
Only use good quality threads.
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.
Use needle with large eye (system 130 N).
Insert new needle and push fully in.
Insert different type of needle.
See needle table (Page 92, 93).
Only guide the fabric lightly.
The seam is sewn unevenly
The tension needs adjusting.
Thread is too thick, stubbed or hard.
The bobbin thread is unevenly wound.
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.
Thread loops at top or underside of fabric.
Check needle and bobbin thread tensions.
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 bobbin thread tension as needed.
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