Leader VS370D, Instruction Book

Page: 37 / 108

36
6) 4-thread Ultra Stretch Mock Safety Stitch
Note: * These are suggested tension settings only.
* Tension settings are effected by;
1) Type and thickness of fabric
2) Needle size
3) Size, type and fiber content of thread
• Set each tension dial to settings shown at right
and test sew on a sample of your fabric.
Correct Balance
• When the upper looper thread lies on the underside
of the fabric;
- Turn the upper looper thread tension dial
(orange) to a higher number.
- Or, turn lower looper thread tension dial (yellow)
to a lower number.
• When the lower looper thread appears on the top
of the fabric;
- Turn lower looper thread tension dial (yellow)
toward a higher number.
- Or, turn the upper looper thread tension dial
(orange) toward a lower number.
• When the left needle thread tension is too loose;
- Turn the left needle thread tension dial (blue)
toward a higher number.
• When the right needle thread tension is too loose;
- Turn the right needle thread tension dial (green)
toward a higher number.
How to Balance
Upper looper thread
Right
needle
thread Left
needle
thread
Lower
looper
thread
Right
needle
thread
Right
needle
thread
Right
needle
thread
Left
needle
thread
Left
needle
thread
Left
needle
thread
Lower
looper
thread
Lower
looper
thread
Lower
looper
thread
Right
needle
thread
Left
needle
thread
Lower
looper
thread
Underside
Fabric Tension Dial
Blue Green Orange Yellow
Light weight
2.5 3.0 3.0
Medium weight
3.0 3.0 3.0
Heavy weight
3.5
2.5
3.0
3.5 3.0 3.0
NEEDLE POSITION
SEAM WIDTH FINGER KNOB S
STITCH LENGTH 2 ~ 4
Upper looper thread
Upper looper thread
Topside
Topside
Topside
Underside
Topside Underside
Topside Underside
Underside
(514)
Upper looper thread
Upper looper thread