Bernette Funlock B42, Instruction Manual

Page: 32 / 41

31
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 Left Coverstitch Needle thread tension is
too loose;
– Turn the Left Coverstitch Needle thread tension
dial (yellow) toward a higher number.
– Or, turn coverstitch looper thread tension dial
(violet) toward a lower number.
When the Center Coverstitch Needle thread tension is
too loose;
– Turn the Center Coverstitch Needle thread
tension dial (green) toward a higher number.
– Or, turn coverstitch looper thread tension dial
(violet) toward a lower number.
When the Right Coverstitch needle thread tension is
too loose;
– Turn the Right Coverstitch 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
looper thread (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
Fabric
Thread tension dial
Yellow Green Blue Violet
Polyester
4.0 4.0 4.0 4.0
2
1
4
6 5
3
2
1
4
6 5
3
2
1
4
6 5
3
2
1
4
6 5
3
NP
Refer page 12
SL
3–4
Refer page 25
Thread Color Code refer page 15.
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