Bernette b48, Instruction Manual

Page: 48 / 77

47
3-Thread Flatlock, narrow
Medium weight
fabric
Thread tension dial
Yellow Green Blue Red Violet
0 4.5 6.5
3-Thread Flatlock, wide
Medium weight
fabric
Thread tension dial
Yellow Green Blue Red Violet
0 4.5 7.0
1
3 4
2
1
3 4
2
1
3 4
2
6
5
6 5
6 5
1
3 4
2
1
3 4
2
1
3 4
2
6 5
6 5
6 5
1
3 4
2
1
3 4
2
1
3 4
2
6 5
6 5
6 5
3-Thread Flatlock
• 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 lower looper thread tension is too loose;
– Turn the lower looper thread tension dial (red)
toward a higher 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
When the upper looper thread tension is too loose;
– Turn the upper looper thread tension dial (blue)
toward a higher number.
When the needle thread tension is too loose;
– Turn the needle thread tension dial (yellow or
green) toward a higher number.
– Or, turn the upper looper thread tension dial
(blue) toward a lower number.
Thread Color Code Refer page 21.
NP
/
Refer page 15
N/R
N
Refer page 14/15
SL
2.5-4
Refer page 33
CL/UL
UL
Refer page 42
ULC
– Refer page 14