Singer 14SH644 User Manual

29
1) 3-thread 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
• Set Each Tension Dial to Settings Shown at Right
and Test Sew on a Sample of Your Fabric
21. SUGGESTED TENSION SETTING
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 the lower looper thread tension dial (yellow)
to a lower number.
• When the lower looper thread appears on the top
of fabric;
- Turn the lower looper thread tension dial (yellow)
toward a higher number.
- Or, turn the upper looper thread tension dial
(orange) to a lower number.
• When the needle thread is too loose, turn the
needle tension dial (blue or green) to a higher
number.
How to Balance
Upper looper thread
Needle thread
Lower looper
thread
Underside
(504)
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
3.0 3.0
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 3.0 3.0
NEEDLE POSITION
SEAM WIDTH FINGER KNOB S
STITCH LENGTH 2 ~ 4
Upper looper thread
Needle therad
Needle therad
Needle therad
Topside
Topside
Topside
Topside
Lower looper
thread
Upper looper thread
Upper looper thread
Lower looper
thread
Lower looper
thread
Underside
Underside
Underside

Singer 14SH644 Specifications

General

Type	Automatic sewing machine
Free arm	Yes
Sewing speed	1300
Stitch width	Variable
Product color	White
Automatic buttonhole	-
Sewing machine functions	Overlock
Power supply type	Electromechanical

Weight and Dimensions

Width	320 mm
Height	380 mm
Weight	7500 g