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3-5.
Thread
Tension
Adjustment
7-
Set
the
balance
of
the
tension
as
weak
as
possible.
Balance
of
the
Loopwer
thread:
When
the
lower
looper
thread
is
pulled
to
the
top
of
material,
loosen
tension
dial
3
counter
clockwise.
(or
tighten
tension
dial
4
clockwise.)
When
the
upper
looper
thread
is
pulled
to
the
underside,
tighten
tension
dial
3
clockwise.
(or
loosen
tension
dial
4
counter-clockwise.)
(1)
Correct
tension.
•
Lower
looper
thread
and
upper
thread
should
be
well
balanced
with
same
tension.
(Both
loop
er
threads
should
make
crosses
at
the
edge
of
the
fabric.)
•
Needle
thread
should
not
be
slacken,
or
pulled.
(2)
Unbalanced
upper
looper
thread
wraps
round
and
over
the
back:
Tighten
the
thread
tension
of
the
upper
looper
(Dial
3
)
or
loosen
the
thread
tension
of
the
lower
looper
(Dial-
4
).
2
Right
side
Upper
looper
thread
Left-hand
needle
thread
Right-hand
r
Tighten
4
Loosen
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