Sewing Problems And Their Solutions - Pfaff Cover Style Owner's Manual

Sewing problems and their solutions

This machine has been developed with ease of operation in mind. No diffi cult or tricky set tings
need to be made. Sewing problems of the kind described below may occur as a result of minor
adjustment and operating errors. They can be easily adjusted by following the in structions.
Problem
Needle breakage
Thread breaks
Skipping stitches
Stitch formation faulty Incorrect setting of thread
3- or 4-thread
overedge seam has
an irregular
appearance and the
upper looper thread
has not interlocked in
the seam.
Machine will not ope-
rate although master
switch is on.
Fabric not neatly
trimmed
Puckered seams
Fabric not fed through
evenly
Cause
The needle was bent or the
point damaged.
The needle was not fully
inserted.
The fabric was pulled too
fi rmly.
Incorrectly threaded.
Thread has caught.
Thread tension is too tight.
Needle not fully insert.
Incorrect needle used.
Needle bent or point damage.
Needle not fully inserted.
Incorrect needle used.
incorrectly threaded.
tension.
The converter is attached.
Power supply interrupted.
Waste thread between upper
and lower blade
Upper blade is blunt.
Thread tension too tight.
Incorrect setting of differen-
tial feed.
Thread has caught due to
incorrect threading
Stitches too short.
Sewing foot pressure too low
for heavy fabrics.
Sewing foot pressure too
high for lightweight fabrics.
Solution
Insert new needle
(see page 13).
Insert needle fully
(see page 13).
Do not pull on the fabric when sewing.
Thread properly (see page 14 - 23).
Check if the thread is caught on the
spool stand etc.
Correct the tension (see page 46 - 56).
Insert needle correctly (see page 13).
Use needle system EL X 705.
Insert new needle (see page 13).
Insert needle correctly (see page 13).
Use needle system EL X 705.
Thread properly (see page 14 - 23).
Re-set thread tensions (see page 46
- 56).
The converter must be removed
(see page 32).
Close looper cover (see page 8).
Clean blades.
Replace upper blade (see page 59).
Reduce thread tension.
Re adjust differential feed
(see pages 36, 37).
Thread correctly (see pages 14 - 23).
Increase stitch length
(see page 38).
Increase sewing foot pressure
(see page 28).
Reduce sewing foot pressure
(see page 28).
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