3-Thread Overlock - Baby Lock Diana BL480A Instruction And Reference Manual

4) 3-Thread Overlock

Tension settings may be effected by :
1) Type and thickness of fabric
2) Needle size
3) Size, type and fiber content of thread
Note: These are suggested tension settings only.
Correct Balance
Set auto tension dial to A or B
sample of your fabric.
How to Balance
1
When the upper looper thread lies on the underside of the
fabric;
-Turn the upper looper thread tension fine tuning lever
(Green) toward the "+".
- Or, turn the lower looper thread tension fine tuning lever
(Blue) toward the "-".
2
When the lower looper thread appears on the top of the
fabric;
-Turn the lower looper thread tension fine tuning lever
(Blue) toward the "+".
-Or, turn the upper looper thread tension fine tuning lever
(Green) toward the "-".
When the needle thread is too loose, turn the needle tension
3
fine tuning lever (Red or Yellow) toward the "+", or loosen
both looper tensions
Note:
If the tension needs to be increased gently move the tension
adjustment lever toward the "+" mark in increments indicated
by the smaller white dots on the colored fine tuning label on
front cover.
If the tension needs to be decreased gently move the tension
adjustment lever toward the "-" mark in increments indicated
by the smaller white dots on the colored fine tuning label on
front cover.
shown at right and test sew on a
equally toward the "-".
NEEDLE POSITION
AUTO TENSION DIAL
SEAM WIDTH FINGER KNOB
STITCH LENGTH
DRIVING CULTCH POSITION
CONVERTER
Fabric
NARROW
Medium
weight
Fabric
WIDE
Medium
weight
Upper looper thread
Needle thread
Topside
1
Needle thread
Topside
2
Needle thread
Topside
3
Needle thread
Topside
42
NARROW
Tension Dial : A
Red Yellow Green
Tension Dial : B
Red Yellow Green
Lower looper thread
Underside
Upper looper thread
Lower looper thread
Underside
Upper looper thread
Lower looper thread
Underside
Upper looper thread
Lower looper thread
Underside
WIDE
A or B
N
N
L
N/A
Blue Purple
Blue Purple