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3) 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
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 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.
NEEDLE POSITION
SEAM WIDTH FINGER KNOB
STITCH LENGTH
Upper looper thread
Needle thread
Topside
Fabric
Blue
Light weight
2.5
Medium weight
3.0
Heavy weight
3.5
Fabric
Blue
Light weight
Medium weight
Heavy weight
Upper looper thread
Needle thread
Topside
Upper looper thread
Needle thread
Topside
Upper looper thread
Needle thread
Topside
S
2 - 4
Lower looper
thread
Underside
(504)
Tension Dial
Green
Orange
Yellow
3.0
3.0
3.0
3.0
3.0
3.0
Tension Dial
Green
Orange
Yellow
2.5
3.0
3.0
3.0
3.0
3.0
3.5
3.0
3.0
Lower looper
thread
Underside
Lower looper
thread
Underside
Lower looper
thread
Underside
33
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