2) How to
match
the position
of
the moving
knife.
This
is
adjusted
by changing tlie right or
left position of the moving knife shaft ®
when the machine stops. By this adjust
ment, the interlocking
of
the cam and the
cam roller also changes, so match the
position
of
the
thread
trimming
cam
to
ward
the
shaft
direction,
also.
a. First, loosen the magnet set screw (2)
and pull out the magnet link pin (3).
b.
Move
the magnet link ® downwards
and adjust the screwed-in amount of
the knife moving
shaft
adjusting
nut
CD.
If this nut is screwed in deep, the
retreating range of the knife becomes
greater
and
if
it's
loosened,
the
range
gets less.
c.
Loosen
both
set screws
of
trimming
cam ® and the thrust collar
d. Match the indicating line
of
the
hand
wheel with the indicating line
of
the
arm.
(In case of
cotton
thread,
match
®
with ® of the front
fig.
and for
synthetic thread, match @ with
®).
e.
Rotate
the set screw
No.2®
(indicated
point)
of
the trimming cam so
that
it
comes
to
front
and
when
it
comes
to
front, push the sewing
hook
prcsser to
right.
f. Move the cam to right and left and
interlock
the
cam
and
the
cam
roller.
g. With this
condition,
as
you
pull
the
cam
to right,
move
it
toward
the
arrow
direction
until
the
cam
cannot
rotate
anymore.
h.
Temporarily
tighten the set screw No.2
®
of
the cam.
i. Tighten the lock
nut
®.
j. At this point, verify the following:
(T)
Is the indicating line of the pulley
matched?
@ Is the roller inserted smoothly into
the cam groove?
® Is the retreated range of the moving
knife
2~2.5mm?
k.
Tighten
the
two
set
screws
of
the
cam
securely.
16
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