Troubleshooting; Machine Skips Stitches; Needle Thread Breaks; Needle Breaks - Pfaff Synchromatic 1209 Instruction Book

iruuiie snooting
Cause:
1. Machine skips stitches
Needle not inserted correctly.
Wrong needle used.
Needle bent or blunt.
Machine threaded improperly.
Needle too thin for thread used.
2. Needle thread breaks
For any of the above reasons.
Thread tension too strong.
Poor-quality or knotty thread used.
or thread that has become too dry by
excessive storage.
3. Needle breaks
Needle not pushed up as far as it will
go.
Needle bent.
Needle too thin or too thick.
Needle bent and strikes needle plate
because work is pushed or pulled.
Bobbin case improperly inserted.
Remedy:
Push needle up as far as it will go, its
flat shank side facing toward the back.
Insert system 130/705 H needle.
Insert new needle.
Check threading.
Select needle according to Needle and
Thread Chart.
See par. 1 above.
Regulate thread tensions.
Use Only good-quality thread
Cause:
4. Seam
is
not uniform
Tension Out of adjustment.
Thread too thick, knotty or hard.
Bobbin thread wound unevenly.
Kinks appear on top and bottom
of material.
5. Machine feeds irregularly or not at all
Lint has accumulated between tooth
rows of feed dog.
Feed dog dropped. Lever 20 it at
the left.
6. Machine works heavily
Thread ends in hook raceway.
7. Fundamental rules
Never run a threaded machine unless
there is a piece of fabric under the sewing
foot.
If you have to leave the machine, even for
a short while, be sure to switch off the
master switch. This is particularly important
when children are around.
Remedy:
Check upper and lower tensions.
Use first-class thread only.
During bobbin winding, do not hold
thread in hand, but pass it through
thread retainer stud.
Thread machine properly and check
both tensions.
Remove needle plate and clean
Out lint.
Flick lever 20 to the right
Remove thread ends and put a drop of
oil into hook raceway.
Insert new needle and push it up as far
as it will go.
Insert new needle.
Note Needle and Thread Chart.
Let machine feed the work alone.
Only guide the material lightly.
When inserting the bobbin case, press
against it until it snaps into place.
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