Adjusting The Thread Tension Spring - Brother BAS-6150 Instruction Manual

4-8. Adjusting the thread tension spring

4-8-1. Operating range of thread take-up spring
5-10mm
q
w
4-8-2. Thread take-up spring tension
0.15-0.35N
q
w
1634S
4-8-3. Thread take-up spring operation timing
q w
!1
!0
1636S
Earlier
Less
r
More
e
1632S
q
<L >
q
Weaker
u
y
Stronger
t
w
<R >
i
Stronger
w
o
Weaker
y
!1
!0
y
Later
1637S
The standard operating range for thread take-
up spring L q and thread take-up spring R w
is 5-10mm for both springs.
1. Loosen the left and right screws e, and
then turn the left and right thread take-up
spring stoppers r to adjust the operating
range.
2. Tighten the screws e.
1633S
The standard tension for thread take-up spring
L q and thread take-up spring R w is 0.15-
0.35N for both springs.
<Thread take-up spring L q>
1. Open the face plate.
2. Loosen the screw t.
3. Loosen the knob y, and then turn the
thread tension stud u to adjust the tension.
4. Tighten the screw t, and then tighten the
knob y.
<Thread take-up spring R w>
1. Loosen the set screw i.
2. Loosen the knob y, and then turn the
adjustment knob o to adjust the tension.
3. Tighten the screw i, and then tighten the
knob y.
1635S
The standard operation timing for thread take-
up spring L q and thread take-up spring R w
is the middle position within the operating
range of the thread take-up spring guide !0 .
1. Loosen the set screw !1 .
2. Loosen the knob y, and then turn the left
and right thread take-up spring guides !0
to adjust the tension.
3. Tighten the screw !1 , and then tighten the
knob y.
BAS-6150
Chapter 1 Machine Preparation
25