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BAS-311E.311EL.326E.326EL
Chapter 3. Assembly
10. Lower shaft (Rotary hook) (2)
1. Fit the inner rotary hook in the large shuttle hook.
2. Turn the pulley to raise the needle bar from its lowest
position until the second highest reference line on the
needle bar q aligns with the end of needle bar bush (D)
w. Turn the shuttle driver e so that the inner rotary
hook point is aligned with the center of needle r, then
tighten the bolt t.
3. Turn the pulley to align the inner rotary hook point with
the center of the needle. Loosen the set screw y so that
the clearance between the needle r and the inner ro-
tary hook point is 0.01 - 0.08 mm, then rotate the shuttle
hook adjust stud u to adjust.
4. Turn the pulley to align the inner rotary hook point with
the center of the needle r.
Loosen the set screw and adjust the shuttle hook adjust
stud i so that the needle r lightly contacts the needle
receiver of the shuttle driver e.
5. Remove the needle r.
6. Attach the large shuttle hook o to the large shuttle hook
body !0.
7. Insert the bobbin !1 into the bobbin case !2, then attach
them to the inner rotary hook !3.
r
0.01 - 0.08mm
y
u
r
r
e
i
o
!0
!1
!2
!3
ADP × 17
r
e
w
t
q
DP × 5