Brother 431B Sewing Machine User Manual


 
4. ASSEMBLY
KE-430B, 430C series
58
Stepping foot specifications
Apply grease.
Apply grease.
Driving lever stopper
Install the driving
lever
push lever
and the tension
release lever U to
the driving lever
stopper with the
shoulder screw.
1. Ten
sion release bracket
2. Screw
3. Tension release rod assy
4. Shoulder screw
5.
Driving lever push lever
6. Tension release lever, U
Adjust the thread take-up spring height
wh
ile referring to “1-2. Standard thread
tension”.
7
. Shoulder screw
3337Q
8.
Tension release pin, L
9. Tension release pin
10. Thread tension assy
11. Set screw
KE-484C
1. Tension release pin push lever
2. Leve
r shaft
3. Set screw
4. Rubber cap
5. Tension release cylinder assy
6. Tension release pin, L
7. Tension release pin
Apply sealant (Threebond 1212 or similar) to the
thread sec
tion.
8.
Thread tension assy
9. Set screw
3338Q