S-6200A
13. STANDARD ADJUSTMENTS
50
13-2. Adjusting the thread take-up spring
<Thread take-up spring position>
The standard position of the thread take-up spring (1) is 6-8
mm [4-6 mm for -[]05 specifications] above the surface of the
thread guide (3) when the presser foot (2) is lowered.
1. Lower the presser foot (2).
2. Loosen the set screw (4).
3. Turn the thread tension bracket (5) to adjust the spring
position.
4. Securely tighten the set screw (4).
<Thread take-up spring tension>
The standard tension of the thread take-up spring (1) varies
in accordance with the machine specifications as shown in
the table.
-[]03 specifications
0.25 - 0.35 N
-[]05 specifications
0.3 - 0.5 N
1. Push the needle thread with your finger until it is slightly
higher than the thread tension bracket (5) and so that the
upper thread is not pulled out.
2. Pull the upper thread down until the thread take-up spring
(1) is at the same height as the base of the thread guide
(3), and then measure the tension of the thread take-up
spring (1).
3. Insert a screwdriver into the slot of the tension stud (6),
and turn the screwdriver to adjust the tension of the
thread take-up spring (1).
13-3. Adjusting arm thread guide R
The standard position of arm thread guide R (1) is the
position where the screw (2) is in the center of the adjustable
range for arm thread guide R (1).
* To adjust the position, loosen the screw (2) and then
move arm thread guide R (1).
When sewing thick material, move arm thread guide R
(1) to the left. (The thread take-up amount will become
greater.)
When sewing thin material, move arm thread guide R
(1) to the right. (The thread take-up amount will become
less.)
3860M
3891M
<-[]03>
0.25 - 0.35 N
<-[]05>
0.3 - 0.5 N
3859M
3892M
<-[]03>
6 - 8 mm
<-[]05>
4 - 6 mm
Becomes less
Becomes greater