(2) On
the
upper
knife
To install the upper knife, push the lower knife slide shaft (D to the
left
side and tighten the set screw
(2).
O
Loosen
the upper knife set
screw
(3)
and insert the upper knife @ into
the upper knife support (D.
@
Make
the width of knife
(dimension
from
needle
position to the upper
knife) little less than the desired
overedging
width and lightly stop the
upper knife by the upper knife set screw from above the upper knife
presser (6) and the upper knife guide (7) .
®
Next,
rotate the
pulley
and
when
the upper
knife
has
risen
to the topmost
position, adjust so that the tip of the upper knife comes to 1.5
mm(l/16")
below
the
lower
knife.
O
When
the
adjustment
is
completed,
securely
ti^ten the
upper
knife
set
screw.
@ Loosenthe lowerknifeslideset screw
(2)
.
®
Rotate
the
pulley
by
hand
and
verify
that
the
knives
are
not
touching
the
throat
plate
or
the
waste
cloth
cover.
* When sewing heavy weight materials, be sure to re-tighten the lower knife
shaft
set
screw
(2).
(3) Adjusting the lower knife spring pressure (Refer to sketch below)
Loosen the nut
(Z)
and adjust by the screw (8),
When
the
overedging
width
is
wide-j
In
case
of
heavy
weight
materials^
When the overedging
width
is narrow-, ,
In noon ni-
unuT
»• 1.* * • 1
r""Loosen
screw
In case
of
light weight matenals-'
When the adjustment is completed, tighten
nut
(7).
(4) Overedging
width
The standard
overedging
width is 3.2 mm(l/8") but
overedging
width of 6.35 mm(l/4") is
available
as a subclass,
is slightly larger than the width of knife)
•Tighten
screw
(The
overedging
width
2. Adjusting
the
needle guard
2 needle guards (§) (g) axe attached to the Model MO-804 and
Model
MO-814.
1)
Loosen
screw
(D and by
moving
the
needle
guard® to right
and left, adjust as shown in the figure.
2) Then, when the needle has dropped to the lowest position,
adjust the front and rear slanting of the needle guard ® so
that the needle barely touches the needle guard. Then tighten
screw (D .
3) Adjust the needle guard (g) by loosening the screw (2) and
adjust in the same manner as the needle guard ®
(MC)-814
needle
guard
is
(F)).
4) For
MO-816,
adjust the
needle
guard © with screw ® and
the needle guard
(g
with screw @ by matching, respectively,
with
the
double
chain
needles.
5) The up and down height of the needle guard ® needle
guard©
and needle guard ©(MO-816) and the slanting angle of these
guards should be adjusted, respectively, by loosening the
screw®
and
screw
(?).
I.Dmm
2.5mm
-
10
-
Needle
Double
chain
needle
Overlook
needl6
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