Brother CB3-B917 Service Manual page 38

0.5 mm
425s
0 mm
426s
427s
18. Insert the brake shaft
19. Insert the brake lever shaft
brake lever
on the bottom side of the clutch body
20. Turn the brake shaft
upward, and then secure it by tightening the set screw
.
* Adjust the brake while referring to section Adjustment of
[Brake] (P.39).
21. With the rear part of the clutch
sewing machine by rotating the stop cam
times.
420s
22. With the rear part of the clutch
stitch length control lever
between the stitch length control lever
length adjustment cam
23. Tilt the sewing machine downward.
24. After stopping the machine, loosen the screw
move the button clamp driving lever
the end of the button clamp driving fork
the driving rod claw
completed, tighten the screw
25. Attach the clutch tension spring
26. Fit the pulley return spring
pulley
then attach the ball presser plate
27. Raise the sewing machine.
28. Attach the needle and installation bolt.
CB3-B916A/B917A
4. REPLACEMENT OF PARTS
into the hole
into the oval hole in the
, and provisionally tighten the set screw
until the screw
so that the clearance
is 0.5 mm.
are aligned. After adjustment is
.
.
, the steel ball 7/32
, the steel ball 5/16 and the belt
in the bed.
.
is facing
pressed, start the
two or three
pressed, adjust the
and the stitch
. Then
to adjust so that
and the end of
, the
, and
to the clutch .
32