0.8 mm
O.5 mm
I hroat
pl
ate
*
Height of
feed
dog
1. Feed dog
O
is usually
set so
that its teeth
protrude
about
0.8 mm
from
the throat
plate
surface at the highest
point
in
its trajectory. Increase the
protrusion
for
heavy-weight
materials
or reduce it for light-weight
materials.
2. Use setscrew
O
to adjust the
protrusion
of the feed dog
teeth.
3.
Using setscrew
O
,
make adjustment so
that
differential
feed dog
@
is level
with
the
main
feed
dog.
4.
Adjust the height of auxiliary feed
dog
O
by
setscrew
@
so that it is 0.5 mm lower
than the main
feed
doe.
*
Contact
of
the
presser
foot with
the throat
plate
top surface
Usirrg
adjust screw
@ ,
perform
adjustment so that
the sole of
the
presser
foot evenly comes in contact
with the top surface
of the throat
plate
when
presser
foot
O
comes down.
|?).*=il)1
*
Inclination
of feed dog
1. Loosen
screw
O
,
and
turn eccentric
shaft
O
in the
arrowed
direction
to make the feed
dog
front up
or turn it
in
the reverse
direction to set the feed
dog front down.
2.
The feed
dog should be levelled
when the dot
engraved
on
the
eccentric
shaft
faces
exactlv
to the ieft.
i
o
Front
up
1 7.
CHAIN LOOPER THREAD
CAM(MO-2416)
Loosen setscrew
@
,
and adjust
chain looper thread cam
O
so
that
6
of the chain
looper thread
cam
meets
the bottom of
looper thread
cam
pawl
O
when the needle
is
at
its highest
position.
Make sure that the
chain
looper thread
cam releases
the
looper thread
at the moment
the
needle
point
starts to
go
below
the bottom
of the
throat
plate
under
this condition.
. | |
Overedge
'"'""Kf*
Throat
plate
18.
THREAD
GUIDE
AND
LOOPER THREAD TAKE.UP
The
table below shows the
standard demensions of the individ-
ual thread
guides
and
looper thread take-ups when the upper
looper
has
gone
back farthest.
3ode
MO-2404
MO-2416
(Standard)
MO-2414
(Standard)
MO-2405
(Hemming
bottom)-
MO-2404
(Soft
chain)
G w
G
w G w
G
w
74 79.5
B
74
79
C
22.5
D
63
.5
E 40.5
F
26
C
37
.5
45 45 37 .5 45 4l 7
H
t2
IJ
18.5 9.5 t2 l3 26.5
6.5
24.5 33. 5 2E.0
33.5
J
23 I
K
L 74
M
63
l
-8-
G
: General
thread W
:
Wooly thread
(Unit
:
mm)
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