White SUPERLOCK 634D - Thread Tension Troubleshooting; Unbalanced Lower Looper Thread; Unbalanced Left Needle Thread; Unbalanced Right Needle Thread

C
C
CD
-
.
.
D
a
a
-
T.
zT
CD
—
-
(D?
CD
CD
-‘0
CD
.
.
-
CD
0.
—
—
0-’
0
3_
0
a_
0
o_
—
CD0
—
—
—
0
(P
-
0
0
-
U)
U)
CD
-
..
C.)
0.CD
oO.
CD
Z
CD
CD
C) 0
CD
z.
CD
0.
0
U)