17
Obstacle avoidance
Obstacle avoidance
Malfunction
Malfunction
Cause
Cause
Explanation
Explanation
1.Upper thread is not correctly installed.
See Page 7
Upper thread breaks
2.Upper thread tension is too tight.
See Page 7
3.Needle is bent or dull.
See Page 5
4.Needle is misplaced.
See Page 5
5.Fabrics are not pulled backward after sewing.
See Page 9
6.Thread is either too thick or too thin.
See Page 5
1.Lower thread is not threaded properly in
See Page 6
the shuttle hook.
Clean the bobbin
Lower thread breaks
2.There is fine hair inside hook.
case
3.Bobbin is damaged.
Replace bobbin
1.Needle is not correctly installed.
See Page 5
2.Needle is bent or dull.
Needlebreaks
3.Needle clamp screw goes loose.
See Page 5
4.Upper thread tension is to tight.
See Page 7
5.Fabrics are not pulled backward after sewing.
See Page 9
6.Needle is too thin to the cloth to be stitched..
See Page 5
7.Pattern selection dial is not turned
See Page 8
properly.
1.Needle is incorrectly installed.
See Page 5
2.Needle is bent or dull.
Skipping stitch
3.Neither needle nor thread is fit for sewing.
See Page 5
4.Upper threading is not correct.
See Page 7
Anl.790.GB/SE/DK/FI/CZ/HU 13.09.2006 13:33 Uhr Seite 19