(2) Matching
the
timing
of
the
sewing
hook
Loosen
the
set screw ( Q)
of
Fig.22) on
the
small gear which drives
the
hook
driving shaft (small) and adjust
the
tim-
ing
of
sewing hook.
In
order
to
eliminate any vertical loose-
ness,
after
adjustment,
you
must tighten
the
said screw
with
such a
manner
as
to
push down
the
hook
and
to
pull
up
the
gear at
the
same time.
4.
ADJUST THE CLEARANCE BETWEEN THE NEEDLE
AND
THE HOOK POINT
(Fig.23)
Adjust
the
clearance
by
correcting
the
sewing
hook
position according
to
following
way:
(a)
Remove
the
presser foot and the
throat
plate.
(b) Tilt
the
machine head backwards.
(c)
Loosen 3 screws which fix a
hook
driving shaft saddle (A, B screws
are
for
the
right
saddle; A', B' screws are for
the
left saddle.)
(d)
Tap
the
hook
driving shaft saddle gently
to
correct
it's
position.
(e)
Tighten
the
screws A(A') and B(B') and finally fix
the
saddle.
A
-13-
Fig. 23
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