Sewing Problems And Their Remedies - Pfaff hobbylock 799 Instruction Manual

Sewing problems and their remedies
This machine has been developed for easy operation, and there are no difficult adjustments to
be made. Sewing problems of the kind described below may occur due to minor adjustment-
and operation errors. They can easily be corrected if you follow the instructions listed below.
Problem
Cause Remedy
Needle breakage Needle bent or point dama-
Insert new needle
ged
Needle not fully inserted Insert new needle correctly (see
page 40)
Material pulled Do not pull material during sewing
Thread breakage Incorrectly threaded Thread correctly
(see pages 8
—
13)
Thread caught
Check whether thread catches up
at reel stand, etc.
Thread tension too tight
Regulate tension,
(pages 18 to 24)
Needle not fully inserted
Insert needle correctly
(page 40)
Incorrect needle used
Use needle system 130/705 H
Skipped stitches Needle bent or point dama-
Insert new needle
ged
Needle not fully inserted Insert needle correctly
(page 40)
Incorrect needle used Use needle system 130/705 H
Incorrectly threaded Thread correctly (pages 8—13)
Incorrect stitch
Incorrect setting of thread Set thread tensions correctly
formation tensions
(see page 18—24)
The 3 or 4-thread
The Converter is in its left- Set converter in its right
overedge seam
position A (see page 26) position B (see page 26)
has an irregular
apearance, and the
right looper thread
has not interlocked
in the seam.
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