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.
-.
-
.
--
-
-
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-
-
.
-
-
..
.
.
.
.
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..
.-
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17.
SETTING
A
NUMBER
OF
STITCHES
-
-
.
-
-
-
~
..
.--
..
~.
~
-
..
...~
~-
.~
-
-
.
~
~
~
i
WARNING:
Turn
OFF
the power before
starting
the
work so as to prevent accidents cause
--
-.
._ .
_-
-
-
_
-
.
To change the nurnher
of
stitches, open the 1el.t-hand 5ide cover and change the number of stitches using stitch number adjusting knob
and stitch r:i~rnbtr
adjusting lever
0
(optional) The illustration
gives
the machine w~th the auxil~arq stop dcvice removed. The number of stitches can be changed with
ease
~~tli
ih~
auxiliary stop device attached.
..
------
-
*
8
stitches
(6
stitches)
*
16
stitches
(12
stitches)
*
32
stitches
(24
stitches)
Pull stitch adjusting cam knob
and
When stitch cam knob
being set for
When the number of stitch
is
set to
16.
move st1ti.h
set
it
as shown in the illustration.
"8
stitches" has arrived at the right end as
number adjusting gear roller
@
to the lower pnsi-
illustrated, set knob
in the illustrated
tion. Now, attach stich number adjusting lever
@
position.
(optional) in position using screw
@
(optional).
1
18.
AUTOMATIC THREAD TRIMMER (EXCLUSIVE FOR
MB-373)
i
WARNING:
I
,
I
*
Position of the moving knife
When the machine stops in the state of "stop-motion" and its button
clamp assembly rests in the highest position, there must be a
standard clearance of 12.5 mm
bctwecn thread trimming connecting link
(front)
@
and the end face of the slit in throat platc
@
.
This clearance is
determined gauge
@
which is stored in the accessory box:
tilt
the head
backwards, remove
the bed oil shield, loosen two nuts
0
and adjust the
clearance by moving connecting screw
@
in the axial direction. When
you tighten two nuts
0
,
ensure that joint
@
stays in the horizontal
position.
Tip
of
thread
separating
pawl
7
*
Height of the moving knife thread separation
nail
There must
be
a
0.5
to
0.7
mln
clearance between loopcr blade
point
@
and thread separation nail
0
.
If nail
0
docs not
provide the necessary clearance, bend
thc nail slighlly aid adjusl
the clearance.
1
_
-
..
..
__
1
*
!-!ow
to set the L-shaped lifting rod
.
..
*
Clearance
between
$e button
ciamp
lifting
Icvzr
f:;!
nio.-ing knife puul!-back ~pring
@
,
st~p-niotion
ri!r:!l:.-
I
.,
and the adjusting screw
.
I)
.
and stop-motion rubber c\~>hinli washer
@
,
in
\!I:..
I.;:'
:
,
,
Provide
3
0.5
I?:!:?
c!earance bc!\iec:?
Su!!,!:!
i!.+!:!;
ii!'~:!?;:
!eve:.
a
~shqed !ifling rod
0
.
After ~ri;il\ing sure that the
4!0i:
!:;a::,(':!
and adjuqting
sircw
(g
and
then
tigl-icil
Iiiit
@
mechanism has engaged complctcly.
fly
the L-shaped !iT1i11~
:,,"
1-:
tightciling screw
6)
in the way
I~,II
thc cnd face of the \top-ir:;;.:.~r,
-
5
-_
rubber cushion washer comes inti1 clo\e contact with ttic j;iki
ti,
ii,c
"
machine arm.
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