Brother 431B Sewing Machine User Manual


 
4. ASSEMBLY
-. Feed mechanism (2)
Install home posi-
tion sensors X and
Y so that there is a
gap of 0.5–0.9 mm
between the sen-
sors and the feed
home position dog.
KE-430B, 431B, 432B, 433B, BE-438B
KE-430C, 4
31C, 432C, BE-438C
Feed home
posit
ion dog
Push the home position
sensor Y cable into the
recess.
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Q
O
il supply
3373
Q
hole
Feed home
posit
ion dog
Note:
Mak
e sure the wick does not
touch the connecting rod lever.
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1) Insert the tack width feed lever shaft with the
thrust washer and retaining ring installed into
the Y-feed lever assembly, press down on
the top of it so that there is no play, and then
tighten the set screw at the screw stop
position.
1. X-feed lever assy [Insert onto bushing]
2. Fee
d cam roller
*
Check that the Y-feed lever assembly
moves smoothly.
[Place into groove
of feed cam X]
3. Thrust washer
4. Y-feed lever assy
KE-430B, 430C series
74
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Q
5. Fee
d cam roller
2) Put the driver into the
en
d of the Y-feed lever,
and press the X-feed
lever assy downward.
[Place into groove
of feed cam Y]
6. Thrust washer
7. Tack width feed lever shaft (with retaining
ring)
8. Set screw
9. Set screw collar
3)
Place the set screw
collar on the shaft of
the X-feed lever, press
it in the direction of the
arrow, and tighten the
set screws.
10. Set
screws [2 pcs]
11. Home sensor setting plate
12. Screw
13. Home sensor setting plate
14. Screw
15. Cord holder
16. Screw
17. Cord holder
18. Screw
19. Wick [Insert into oil supply hole]
20. Wick [Insert into oil supply hole]
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