Brother International BAS-612 Instruction Manual - English - Page 31

Well-balanced, Excessive, needle, thread, tension, Insufficient, excessive, bobbin, Narrower, Wider

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1. Bobbin thread tension e • The bobbin thread tension varies with the material and thread. Turn tension regulating screw 0 to adjust the tension. The standard tension is 40 to 50 g for medium-thick to thick materials when sewing with #50 spun yarn. O 2. Needle thread tension 3. Thread take-up spring • Turn tension control nuts 0 to adjust the needle thread tension. Once the bobbin thread tension has been adjusted, the needle thread tension adjustment alone can provide a well-balanced, neat seam. X 7• Well-balanced, neat seam Excessive needle thread tension r ff 'ent b thread tension Insufficient needle thread tension or excessive bobbin thread tension 'to 10 mm 20 to 40g © • I Wider Narrower 0 m ©- -(0 c Lower Higher • Thread take-up spring operation range The standard operation range of thread take-up spring 0 is 7 to 10 mm. To adjust the range of spring 0 , loosen screw 0 and turn stopper 0 . • Thread take-up spring tension 'he standard thread take-up spring tension is 20 to 40 g. "o adjust the tension, loosen screw (1) and setscrew 0 and turn tension stud 0. -27-

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<Adjusting
the
stitch
tension>
1.
Bobbin
thread
tension
e
O
2.
Needle
thread
tension
3.
Thread
take-up
spring
•
The
bobbin
thread
tension
varies
with
the
material
and
thread.
Turn
tension
regulating
screw
0
to
adjust
the
tension.
The
standard
tension
is
40
to
50
g
for
medium
-thick
to
thick
materials
when
sewing
with
#50
spun
yarn.
•
Turn
tension
control
nuts
0
to
adjust
the
needle
thread
tension.
Once
the
bobbin
thread
tension
has
been
adjusted,
the
needle
thread
tension
adjustment
alone
can
provide
a
well-balanced,
neat
seam.
Well-balanced,
neat
seam
Excessive
needle
thread
tension
X
7•
r
ff
'ent
b
thread
tension
Insufficient
needle
thread
tension
or
excessive
bobbin
thread
tension
'to
10
mm
Narrower
20
to
40g
•
I
Wider
0
©—
m
©
—
(0
c
Lower
Higher
•
Thread
take-up
spring
operation
range
The
standard
operation
range
of
thread
take-up
spring
0
is
7
to
10
mm.
To
adjust
the
range
of
spring
0
,
loosen
screw
0
and
turn
stopper
0
.
•
Thread
take-up
spring
tension
'he
standard
thread
take-up
spring
tension
is
20
to
40
g.
"o
adjust
the
tension,
loosen
screw
(1)
and
setscrew
0
and
turn
tension
stud
0.
—27—