III
Lower shaft and rotary hook (2)
Inner rotary hook
-36-
9)
Fit the inner rotary hook in the large shuttle
hook.
1
0)
Turn the pulley
to
raise
the needle bar
«!>
from
its
lowest position
until
the
second highest
reference
line on the needle bar
«!>
aligns
with
the
end
of
needle bar
bush
(D) (}). Adjust the
driver
@>
so
that
the inner rotary hook
point
is
aligned
with
the
center
of
needle @
1
then
tighten
the screw.
11)
Turn the pulley
to
align the inner rotary hook
point
with
the center
of
the
needle
@.
Loosen
the set screw
so
that
the
clearance
between the needle @ and the inner rotary
hook point
is
0.01-0.08
mml
then rotate
the
shuttle hook adjust stud @
to
adjust.
12)
Turn the pulley
to
align the inner rotary hook
point
with
the center
of
the needle
0.
Loosen
the set screw and adjust the shuttle
hook adjust stud @
so
that
the needle 0
lightly
contacts
the
needle receiver
of
the
driver@>.
13)
Removetheneedle0.
14)
Attach the large shuttle hook
G)
to
the
shuttle
race
base.
15)
Insert the bobbin @
into
the bobbin
case
@
1
then attach them
to
the
inner rotary hook.
16)
Attach the large shuttle hook cover 0
to
the
arm
with
the
stud screw and
the
spring
washer.
17)
Attach the needle
0.
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