3-Thread Wrapped Edge Overlock - Singer 14SH644 Operator's Manual

3) 3-thread Wrapped Edge Overlock

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.
Correct Balance
• Set Each Tension Dial to Settings Shown at Right
and Test Sew on a Sample of Your Fabric
How to Balance
• When the upper looper thread tension is too loose;
- Turn the upper looper thread tension dial
(orange) toward a higher number
• When the lower looper thread tension is too loose;
- Turn the 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 needle thread tension is too loose;
- Turn the needle thread tension dial (blue or
green) toward a higher number.
- Or, turn the upper looper thread tension dial
(orange) toward a lower number.
NEEDLE POSITION
SEAM WIDTH FINGER KNOB
STITCH LENGTH
Needle thread
Upper looper
thread
Topside
Fabric
Blue
Light weight
4.0
Medium weight
5.0
Heavy weight
5.0
Fabric
Blue
Light weight
Medium weight
Heavy weight
Needle therad
Upper looper
thread
Topside
Needle therad
Upper looper
thread
Topside
Needle therad
Upper looper
thread
Topside
S
2 ~ 4
Lower looper
thread
Needle thread
Underside
Tension Dial
Green Orange Yellow
0 8.0
0 8.5
0 8.5
Tension Dial
Green Orange Yellow
2.5 1.0 7.0
3.0 1.0 7.0
3.5 1.0 7.0
Lower looper
thread
Needle therad
Underside
Lower looper
thread
Needle therad
Underside
Lower looper
thread
Needle therad
Underside
31