55
4-Thread Coverstitch
• Correct balance
–
Set each tension dial to recommended setting
and test sew on a sample of your fabric.
• How to balance the thread tension
When the coverstitch looper thread is too loose;
–
Turn the coverstitch looper thread tension dial
(violet) toward a higher number.
When the coverstitch left needle thread tension is too
loose;
–
Turn the coverstitch left needle thread tension
dial (yellow) toward a higher number.
–
Or, turn coverstitch looper thread tension dial
(violet) toward a lower number.
When the coverstitch center needle thread tension is
too loose;
–
Turn the coverstitch center needle thread
tension dial (green) toward a higher number.
–
Or, turn coverstitch looper thread tension dial
(violet) toward a lower number.
When the coverstitch right needle thread tension is too
loose;
–
Turn the coverstitch right needle thread tension
dial (blue) toward a higher number.
–
Or, turn the coverstitch looper thread tension
dial (violet) toward a lower number.
When the top surface of fabric bulges between needle
threads and the seams on the underside of the fabric
becomes tight;
–
Turn the coverstitch looper thread tension dial
(violet) toward a lower number.
PLEASE 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
–
Stitch length for coverstitch should be set at
over "
•
" (2.5 mm).
4-Thread Coverstitch, narrow
Medium weight
fabric
Thread tension dial
Yellow
Green
Blue
Red
Violet
Polyester
3.0
6.0
6.5
4.0
NP
Refer page 15
N/R
R
Refer page 14/15
SL
3-4
Refer page 33
CL/UL
CL
Refer page 42
ULC
–
Refer page 14
Thread Color Code Refer page 21.
2
1
4
6
5
3
2
1
4
6
5
3
2
1
4
6
5
3
2
1
4
6
5
3
2
1
4
6
5
3
2
1
4
6
5
3
2
1
4
6
5
3
2
1
4
6
5
3
2
1
4
6
5
3
2
1
4
6
5
3
2
1
4
6
5
3
2
1
4
6
5
3
2
1
4
6
5
3
2
1
4
6
5
3
2
1
4
6
5
3
2
1
4
6
5
3
