5 – STITCH ADJUSTMENTS 41
FINE TUNING TENSION SETTINGS
Thread tension is automatically set when selecting a stitch but it may have to be À ne tuned depending on:
• Type and thickness of the fabric
• Needle size
• Size, type and À bre content of the thread
See page 14 for how to adjust the thread tension settings.
2-Thread Overlock
When the lower looper thread lies on the underside of the fabric
Increase the looper thread tension (blue), or decrease the •
needle thread tension (yellow or red).
When the needle thread tension is too loose
Increase the needle thread tension (yellow or red), or •
decrease the lower looper thread tension (blue).
2-thread overlock, wrap
When the lower looper thread tension is too tight or needle thread tension
is too loose
Decrease the lower looper thread tension (blue), or •
increase the needle thread tension (yellow or red).
When the lower looper thread tension is too loose
Increase the lower looper thread tension (blue).•
3-thread Á atlock stitch
When the lower looper thread tension is too loose
Increase the lower looper thread tension (blue), or •
decrease the needle thread tension (yellow or red).
When the upper looper thread tension is too loose
Increase the upper looper thread tension (green), or •
decrease the needle thread tension (yellow or red).
When the needle thread tension is too loose
Increase the needle thread tension (yellow or red), or •
decrease the upper looper thread tension (green).
3-thread overlock
When the upper looper thread lies on the underside of the fabric
Increase the upper looper thread tension (green), or •
decrease the lower looper thread tension (blue).
When the lower looper thread appears on the top of the fabric
Increase the lower looper thread tension (blue), or •
decrease the upper looper thread tension (green).
When the needle thread is too loose
Increase the needle tension (yellow or red).•
4-thread overlock
When the upper looper thread lies on the underside of the fabric
Increase the upper looper thread tension (green), or •
decrease the lower looper thread tension (blue).
When the lower looper thread appears on the top of the fabric
Increase the lower looper thread tension (blue), or •
decrease the upper looper thread tension (green).
When the left needle thread tension is too loose
Increase the needle thread tension (yellow).•
When the right needle thread tension is too loose
Increase the right needle thread tension (red).•
Safety stitch
When the lower looper thread tension is too loose
Increase the lower looper thread tension (blue).•
When the upper looper thread lies on the underside of the fabric
Increase the upper looper thread tension (green), or •
decrease the lower looper thread tension (blue).
When the lower looper thread appears on the top of the fabric
Increase the lower looper thread tension (blue), or •
decrease the upper looper thread tension (green).
When the right needle thread tension is too loose
Increase the needle thread tension (red).•
When the chainstitch needle thread tension is too loose
Increase the chainstitch needle thread tension (yellow), or •
decrease the chainstitch looper thread tension (purple).
Chainstitch
When the chainstitch needle thread tension is too loose
Increase the needle thread tension (yellow), or decrease •
the chainstitch looper thread tension (purple).
Coverstitch
When the coverstitch looper thread is too loose
Increase the coverstitch looper thread tension (purple).•
When the coverstitch left needle thread tension is too loose
Increase the coverstitch left needle thread tension (yellow), •
or decrease the coverstitch looper thread tension (purple).
When the coverstitch middle needle thread tension is too loose
Increase the coverstitch middle needle thread tension •
(red), or decrease the coverstitch looper thread tension
(purple).
When the coverstitch right needle thread tension is too loose
Increase the coverstitch right needle thread tension (green), •
or decrease the coverstitch looper thread tension (purple).
When the top surface of fabric bulges between needle threads and the
seams on the underside of the fabric becomes tight;
Decrease the coverstitch looper thread tension (purple).•
