Bernette b48 FUNLOCK - 3-Thread Coverstitch; 3-Thread Coverstitch, narrow; 3-Thread Coverstitch, wide

54
3-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 right needle thread tension is too
loose;
– Turn the coverstitch right needle thread tension
dial (green) or (yellow) 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).
3-Thread Coverstitch, narrow
Medium weight
fabric
Thread tension dial
Yellow Green Blue Red Violet
Polyester
3.0 6.0 4.0
3-Thread Coverstitch, wide
Medium weight
fabric
Thread tension dial
Yellow Green Blue Red Violet
Polyester
3.0 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
3
2
3
1
4
6
5
1
4
6
5
2
3
1
4
6
5
2
3
1
4
6
5
2
3
2
3
1
4
6
5
1
4
6
5
2
3
1
4
6
5
2
3
1
4
6
5
2
3
2
3
1
4
6
5
1
4
6
5
2
3
1
4
6
5
2
3
1
4
6
5
2
3
2
3
1
4
6
5
1
4
6
5
2
3
1
4
6
5
2
3
1
4
6
5