Baby Lock Evolve (Previous Model) (BLE8W) Instruction and Reference Guide - Manual (Page 55)

Balanced tension -
Triple Cover stitch has correct tension when the needle thread sew
three rows of straight stitching on the top side and the chain looper
forms a zig zag on the underside of the fabric.
Needle thread is too loose -
Turn the chain/cover needle thread tension dial to a higher number. Or
turn the chain looper tension dial away from the wide dash at the words
"Cover Stitch" , but, staying within the solid gold line. This will tighten
the chain looper thead on the under side of the stitch.
Needle thread is too tight -
For a looser tension turn the chain / cover needle thread tension dial to
a lower number. Make sure that the chain looper tension dial is set at
the solid dash at the words "Cover Stitch".
C
H
A
I
N
C
O
V
E
R
S
T
I
T
C
H
E
X
P
R
E
S
S
53
Triple Cover Stitch continued
Balanced tension
Needle thread is too loose
Needle thread is too tight
* Tension Adjustment
under side
top side