English
Section
7
7. TROUBLE CHART
PROBLEM
Breaking lower thread
Skipping stitches
Irregular stitches
The material not fed
correctly
Noisy machine
PROBABLE CAUSE
Thread not wound evenly on the bobbin or not drawn up correctly
Lower thread tension too tight
Lint stuck in the bobbin case and inside the tension spring
Needle not fully inserted
Needle bent
Size or type of needle and thread not suitable for the material
Incorrect upper threading
Too much oil on the machine
Incorrect size of needle for the material
Upper thread tension too loose
Incorrect lower tension
Pattern selection dial not set correctly
Lint stuck on the feed dog
Check for thread in race, the slightest amount of thread in
race may cause noise or binding, use material like tooth pick
or cotton swab to clean.
CORRECTION
P.25, P.9, 11
P.101, 103
Remove lint and fluff
with a cleaning brush
P.31
P.31
P.35
P.9
P.87
P.35
P.19
P.101, 103
P.41
P.85
P.85
P.105
1
15
Summary of Contents for JSB21
Page 29: ...Section 2 2 ACCESSORIES ACCESORIOS ACCESSOIRES ZUBEHÖR TOEBEHOREN ACCESSORI 29 ...
Page 134: ...134 ...
Page 135: ......
Page 136: ...CT_VERITAS JSB21_IM_2020_V1 ...