Baby Lock Ovation (BLES8) Instruction and Reference Guide - Manual (Page 47)

Balanced tension -
Chain stitch has correct tension when the needle thread sews a
straight seam on the top side and the chain looper thread forms
loops on the underside of the fabric.
Needle thread is too loose -
Turn the chain/cover stitch needle tension dial to a higher
number. Or turn the chain/cover stitch looper tension dial to a
narrower stripe for looser tension. (Narrow stripes are looser
tension)
Needle thread is too tight -
Turn the chain/cover stitch needle tension dial to a lower
number. Or turn the chain/cover stitch looper tension dial to a
wider stripe for tighter tension. (Wider stripes are tighter tension)
C
H
A
I
N
/
C
O
V
E
R
S
T
I
T
C
H
E
X
P
R
E
S
S
45
Chain Stitching (Cont.)
Needle thread is too loose
Needle thread is too tight
* Tension Adjustment
C-1
C-2
C-3
O-1
O-2
UL
Balanced tension
underside
top side
∧
∨