Sewing Problems And Their Removal - Pfaff Hobbylock 784 Instruction Manual

Sewing problems and solutions
These machines have 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 by following the instructions below.
Problem
Cause
Solution
______
Needle breakage
Needle bent
Insert new needle.
or point damaged.
Needle not fully inserted.
Insert new needle correctly
(see page 26).
Material pulled.
Do not pull material during
sewing.
Thread breakage
Incorrectly threaded. Thread correctly
(see pages 7—10).
Thread has caught.
Check whether thread catches
at the reel stand, etc.
Thread tension too tight,
Regulate tension.
(pages 15, 1 6).
Needle not fully inserted.
Insert needle correctly (page 26).
Incorrect needle used.
Use needle system 130/705 H
Skipped stitches
Needle bent or point
Insert new needle.
damaged.
Needle not fully inserted.
Insert needle correctly (page 26).
Incorrect needle used.
Use needle system 130/705 H
Incorrectly threaded.
Thread correctly (pages 7—10).
Incorrect stitch
Incorrect setting of thread
Set thread tensions correctly
formation tensions.
(pages 15, 16).
Puckered seams Thread tension too tight.
Reduce thread tension (espe
cially for light materials)
(pages 15, 16).
Incorrect setting of
Re-adjust differential feed.
differential feed.
Thread has caught due to
Thread correctly (pages 7—10).
incorrect threading.
30