........................ ...... ................ IS
.... .............. .............. ..
12
12
1:3
16
19
21
22
23
24
LK3-B220, 8221
The
~e mac hine~
are high
~
p ee
d
bar la cking machines capable to sew at
High
Speed
Bar
Tacking Machine
ma~imum hi~!h ~p
eed
of
2.
000
~!itches
per minut
knilled
loops on
e.
The model
unden\ear~
,l.(e
nl \ <llld ladies
Ll\
:~
ll220 b
.
and the model LI\::.J-:
pant
~uitable
~.
and jean: and Iabeii in.!.(
to do tacki ng jobs on overco
22
1
i~
suitable to do
tackin
on \ arious clothe
ats
. gent' s pants. jeans.
g
job~
on eye let buttonhole ends,
s.
m·e ra
l l
FEATURES
1.
This
is designed with cylindri cal bed, link motion
2.
On
thread
trimming
replacement of the
3.
All
the mechanisms
thus it is ensured the less noise and less vibration. Especially, the clutch mechanism is designed with speed
reduction method with
feature brings the noiseless ope
Also,
perfect
trimming mechanism,
perf
ormances and
thread
are
on the needle
stitch
formations.
BROTHER'
thread
trimming
designed to be
two
belts, and it ensures smooth
bar
mechanism, it adopted with needl e
tails are unified with this
knives
ration
are
durable
and prevent the
thread
s own unique idea is adopted to be ensured perfect
very easy .
even
take-up. and
at
max
imum high speed of
operation
thr
ead-off out of the needle.
bar
clamp
shuttle
thread
when the machine
to ensun• noiseless operaticni
hook.
trimming mechanism. Also,
2,000
stitches per minute,
starts
and stops.
~
and
belt
thread
the
Thi
and
s
4.
All
the mechanisms
jamming
5. It ensures
6. One of the
own designed hook timing adjustin g mechanism,
which is eliminated to adjust the space between
needle and hook point with wa
the
only by adjusting ring
7.
The
setting
endless belts.
8. Bed
sures no oil-leakage.
and oil stain.
wide
greatest
thickness
belts
are
and dismantling
base
plays role of oil reservoir, thu s it en·
are
covered entirely
space
underne
advantage
of needle.
to
vertically put, then it enables easy
ath
the work
is
BROTHER's
sher
dependent on
This
adjustment is made
get
proper
and
it
can
be
cle
used
aranc
and
it is so-called
clamp
e.
with
totally
with uniqu e designed
enclosed type, thus it prev ents
work
cla
mp
lifting mechanism.
thread
- 1 -
-
SPECI
MODEL LK3-B220 LK3-B220 LK3-B22 0
Sub-class
Application
;\
o.
of
stitch
Tack
length
Tack
\\'idth
:\Iaximu111
:1\eedle
Height of \\'o
;\e
Sub-class
Application
;\o.
Tack
Ta
1\I
l\
Height of wo
~eedle
edle
of
ck wi
axim
eed
bar
movem
MODEL
stitch
length
um
bar str
movement
Fl
CATIONS
sewing speed I
str
oke
rk
clamp
ent
dth
sewing speed
oke
rk
clamp
I
I
I
I
I
I
I
II
-1
Overcoats.
Overalls, ladies'
Jeans,
etc.
42
6-
16
111m
1-
3ml11
2.000 spm
-!1.2
mm
lOmm
gent's
pants
:3.5-10111m
1-
I
2,000
41.2
10mm
I
LK3-B221
I
-1
LK3-B221
I
I
I Eyelet button-! Eyel
hole end hole end
II
I
28
3-
7mm
1-
3mm
2.
000
41.2 ml11
lOmm
spm
I
I
I
I
I
I
3-
1- 3
2.000
-!1.2
-2
and
28 28
3mm
spm
mm
-2
et
button-
21
7mm
mm
spm
mm
lOmm
Knitted
Underwears
3.51-
2,000
41.2111111
LK3-B221
Belt loop Labelling
5-
0-
2,00
-3
8111111
3111111
spm
10mm
-3
21
12
1.5111111
0spm
41.2
mm
lOmm
mm
LK3-B220
I
gent's
ladi
pan
31-
I
2,000
-!1.2
10mm
LK3 -
20-50mm
Omm
2.
000spl11
41.2
10111111
--l
es
ts
21
7111111
3mm
spm
mm
B221
--l
-!2
111111
LK3-B220
-5
Knitted
Unde
rwears
21
3-
7mm
1 -
3mm
2,0
00
spm
41.2
mm
lO
mm
LK3-B221
-5
Labelling
32
14-35mm
Omm
2,
000spm
4L2mm
lOmm
LK3-B220
-6
Denim
Corduroy
Jeans
7.5-
LK3 -B
18-45
or
42
20
mm
1-
3mm
1,900
spm
4L
2mm
lO
mm
22
-6
Labelling Labelli
28
mm
Omm
2,
000sp
4L2mm
lOmm
1
m
LK3-B220
Denim
Co
rduroy
Jeans
6-
l -
1,900
4L2mm
10mm
LK
16-40111111
Omm
,000
2
4
1.2111111
10m111
-7
or
28
16111111
3mm
spm
3-B22
1
-7
ng
21
sp111
LK3-B220 LK3-B220
-8 -9
Overcoats,
Overalls, Overalls,
Jeans, etc.
42
7.5-20
7.5-20mm
mm
1-
3mm
2,000
spm
41.2
mm
lOmm
LK3-B221
-8
Belt loop
28
0-1.5mm
2,000spm
41.2111111
lOmm
Overcoats,
Jeans,
28
6-16111m
1-3ml11
2,000spm
41.2
10mm
I
etc.
mm
N
OPERATION
1.
Name
(A) Model
lever----ffff1~~====~~==~~==~~==~.(
plate
Nipper
tension
of
major
LK3-B220
Sub tension
assembly
components
Arm
cover
Belt
cover
Cam
cover
F
UDTHER3
Needle
bar
(B) Model
Presser
arm
I
Tack
regulator
LK3-B221-1
width
Emergency
motion
&
lever
-2
stop
Bed base
Bed
(C)
Work
Model
clamp
lifter
LK3-B221-3
&
-8
(D) Model
LK3-B221-4--7
-3-
2.
Setting
up
the
machine
* Location and measurement
for
LK3-B220
*Putting
the
&
chains
Work
LK3-B221
l
clamp
lifter
of
l
Adjust
J'
oh•;"
table
length
top
* Location and measurement
for
LK3-B221-3
----------1200----------..j
Adjust
of
chain
length
&
-8
of
table
top
A Holo for
ng
ht troodle
U H
ofo
for
lo
ft
troodle
C Holo
lor
mounung
D Halo for machine
bod boso bolt
t:
Holo for
ho
nd rest
motor
bolt
*Putting
o
left
Trea~Je_
r-.~'""'-
'.§Clutch
, lever Clutch actuating
"'
.__,.
· ·
actuatmg
rod
(Clutch
actuatin
belts
Belt for h1gh
speed operat1o
(longe
r belt)
Right
Left
treadle
g rod is included in accessories.)
n
treadle
wmder
- ·l -
* Length
In
of
belts
·asc th at you may usc
\\'
ith non-
BROTHER
mad
e tabl e
and
stand, th e
standard
length of
the
belts arc
as follow
In
case
temporarily
cut
the
(NOTE)
speed
and
*MOTOR
Singl e
Three
*Joining
s:
50 liz
-c
that
you may use with non-
sett
ing between mo
belts
being 30- 40 mm s
Be careful to
tight
phase
phase
belts
get
tension, it
250W
250W
4 pole
4 pole
Longer belt
Short
er be
lt
BROTHER
tor
pull
hort
er
prop
er tension
caus
es
too heavy
*MOTOR
1,119mm
1,007
llllll
made
ey
and idle pulley, on condition
and
put
the both ends together
of
the belts. In case
torqu
60H
z
-c
table and ·stand, please
e.
PULLEY
1,900 spm
120
102mm
50
Hz
60Hz
2,000 spm
130mm
llOmm
Longer
Sho
of loose
trim
rter
that
as
descr
tension
1,700 s
108mm
92mm
belt
belt
determine
the
1,080
992mm
the
belt
is
not
ibed hereunder.
, it
cannot
pm
1,500
96mm
82mm
mm
length of
stretched, and
run
at
spm
1,300
84mm
72mm
belt
prop
spm
s
er
~~§:
/Heated~
Belt Belt
The
belts
cause
any
anxiety
Please
(1) Cut
(2)
(3)
(4)
of
take
the
and
machine
Melt
Put
together
without
Remove
contained
slippage on
breakage
the
following
belts 30 -
the
both
both ends on base
remov
the
surplu
head
ends
ing
with
this
machine's
on
the
40
mm
.
of
the
contact
s with s
machine head
running,
joining points
steps
to
adhere
shorter
the
belts w
using
harp
than
for
knif
Sharp
knife
~
t=-=-I;
and
during
the
the
ith
heat
belt
base
e as per
--
6--
Remove
are
made
of
polyule
with
the heat
the
operation:
belts.
length
joining then pressing each end
for
that
it sets te
such
as lighter flame, heated
belt
joining cont ained in accessories.
illustration
.
Base
thane
rubb
adhesion it
mpor
arily between the pulleys
for
belt
er
of
Smm¢,
ensur
es
durability
iron
plate and the like.
and leav
e it
joining
which does
without
about 3 minut
of
not
any
motor
es
- 5 -
*Setting
spool stand
*Checking
speed reduction
Photo 1
o
Without
belt guide is positioned at slow speed
pulley as per
o
With
is disengaged out of s
positioned
Photo
o
At
tr
ipping
le
ver
as
running the motor, when clutch
Photo
1.
turn
ing the pulle
at
2.
a few sti
cam
is positioned
per
Photo
slow speed pulley and
tch
es before the machine stops, when
lever is
1.
y,
when clutch tripp
top cam, the belt g
at the stop cam, the
at
slow speed pulley a
is raised, the
pulley
ing
uide
idlt>
pulley
belt
nd
idle pulley
and
cam
lever is
as
clutch
guide
idle
lever
per
o
At
the stop position, the belt guide leve r is positioned
at
Photo 2
Photo 3
idle pulley and bobbin winder pulley as per
6
Photo
3.
3.
Oiling
Supply one or two drops of quality sewing machine oil inlo oil holes with
the machin
e.
10drops
1
10
drops
!14
5
drop
I
s
(L-
I
'
I
' I
arrow
indicated before using
4.
Safety
Ri
Left
operation
ght
treadle
treadl
e
o When the switch is "ON",
s
tarts
to run and the idl pulley
s
tart
s to run.
l Release the right tr a
ma
the
(Machine
r;
When the left treadle is d
pressed, it works the th
trimming and thread nipper
mechanisms
chine is in op
st
ops automatically)
and li
era
fts work clamp.
motor
dl
e when
tion.
rea
e-
d
- 7 -
To
stop the machine during the opera -
tion. depress the emergency stop lever
o Even
it
depressed
the left treadle
while the machine
tion. \\'ork clamp
stays
is
accidentally
is
clown
.
in
opera·
before completing
o When the work
machine will not
is
treadle
accidentally depressed.
sewing cycle.
position)
clamp
is raised up, the
start
even if the right
5.
Needle
*Selection
Needle
*Installing
#
#11
#
14
#
16
#
18
#
19
#21
9
and
size
thread
of
needle and thread
Thread
#
#
#
#
# 40-
# 30-
#
the
Loosen
up
needle bar,
groove
and fasten needle
with
size Application
100-#80
80-
#60
60-
#50
50-
#40
#30
#20
:W
- # 8
needle
this screw
needle all
into
the
II
need4e
facing
screw.
with
Insert
Tricot,
fine knitted under
II II
wear
Men's and Ladies' wears
Work clothes. overalls, overcoats
is adjustment is also affected much on the sewing condition.
LK3-B220
LK3-B221
LK3-B220
LK3-B22
.
Tension
-3,
-8
.......... 70- 80 gr.
150-200
50-
tension is released
thr
ead from loosening when the
thread
oth
tension
-1--5, -8-
-1-
-6- -7 .................................. 6- 8 mm
1-4- -7 ............................... 12.5- 13.5 mm
will be fairly taut betwee n the needle and the
er sub-classes)
-9
-3,
-8
gr.
60
gr.
at
}
························
Thread
Dacron
Cotton
Dacron
the final stitch, enough length
S
tro
3
#50
#50
#80
ke
mm
thr
ead is trimmed.
Tension
15- 20
220-300 gr.
15-220 gr.
of
gr
.
-
11
-
10.
Adjusting
tack
width
11.
Adjusting
g
tack
length
Adjust by loosening adjusting screw and
1
2.
13.
moving hinge
Adjusting
Cleaning
bluci<
in
vertical direction.
pressure
shuttle
of
work
clamp
Adjust the work
than necef.sary
Adjust by loosening thumb screw and moving
along with the slot of the
clamp
so
that
to prevent the
tack
it
exerts
material
length
no more pressure
from slipping.
regulator.
it
1.
Remove shuttle
bobbin case. oil inside of shuttle race.
14.
Removing
R move four flat he
plate.
race
needle
ad scr
with
plate
ews and then needle
2. Remove shuttle.
15.
Match
- 12 -
Installing
markin
* After cleaning, put a
needle
g in assembling.
plate
drop
of
~
Set
screw
Thread
Upper
Lower
1
6.
presser
thread
thread
__
knife
knife
Replacing needle
*Needle
(2.2mm
diameter) for ultra
hole plates are available
in
needle hole diamete
hole
plate
in
r)
for thick
hea vy materials.
Thread
Presser
*The
Upper
needle hole plate can be removed by loosening two
set screws and pushing it upward.
be
very smooth.
* Replace the needle hole plate
siderably damaged.
*When
putting a new needle hole plate
make sure the
groove
in
standard size (1.6mm
mat
erials , and another special size (4.0mm
thread
knife
Lower
if
thread
The
needle hole must
the needle hole IS con-
in
groove on its underside is
in
the needle plate .
in
needle hole diameter); and special size
in
knife
replacement,
line with the
needle hole
ADJUSTMENTS
1.
Adjusting
The
proper needle
the
lowest point to form the correct loop of the upper thread a
the loop.
needle bar
bar
rise and needle
bar
heig
ht are necessary for the needle in its upward trave l from
( 1 ) Needle bar rise
When the needle bar comes up from downmost to
mentioned measurement, the shuttle point must be in line
\\"
ith the centre axis of the needle. Adjustment can be
made by loosen
turn ing the shuttle
screw matching with the
black screw.
- 13 -
nd
for the shuttle point to properly hook
below-
in
g two shuttle driver set screws and
driver as required and fasten the silver
groove
of low
er
shaft a
nd
then
Shuttle driver
(2)
Needle bar height
Shuttle Needle
p~~
ll
r-1
'l1T2
~·
Make
sure
Lhal
the shullle driv er is
of shuttle point.
LK3-
B220
-l - ·5, -H- -9 } ........ .
LK3-
B221
-l - -3, -8
LK3-B220
LK3-
(NOTE) LK3-
When
the
shuttle point is
distance between the lop of the needle eye and the shuttle point
If
adjustment
raise
or
is
required, loosen the needle
lower the needle bar.
LK3-
8220-1 - -
LK:~-
B221-l LK3-B220-6-
LK3-B221 -4- -7 ......
·6- -7 ...... ......
B221
-4- -7
.....................
B220
-6 & -7 for Denim. only one screw is sel.
in
line with the
5.
-8-
-9
) .
..
-3,
-H
-7
.....................
J
..........
.......
in
close
2.8
..........
...
..
2.5
2.5
centre
2.0
1.2mm ± 0.2mm
2.0mm ± 0.
axis
bar
111111
contact
111111
mm _ O.lmm
mm 0.2
connecting stud
± 0.
3mm
3mm
with lhe
±
0.2
111111
m111
of the needle, the
is
rear
as
follows.
scr
ew
side
correct
and
(3)
Clearance
Needle1C
2.
Adjusting
Bar
tacks
the
outer
The
tack
expanded by feed adjustment, its centre must always be at the same point.
between
- o.
~Shuttle
feed
will be made as the pow er is
and inner
design
the
os....
.
pomt
mechanism
groove
stays
within the re
needle and
s of the feed ca
ctan
the
shuttle point
transmitt
gul
ed to t
m.
ar
opening in the work clamp an d even when the swing ts
ack
length and tack width mechanisms through
Thl'
corr
ect
clearan
tween the centre
bein
).!
met with
po
int is
0.0:~-0.0Hmm
To
adjust the
loosen the s
s
et scr
adjusting screw
the s
et scr
completion.
huttle
ew and
ew tightly
ce be·
of needle
shuttle
.
clearance,
hook
rot
ate
the
and
fasten
after
(1)
Needle and feed cam
Feeding begins as soon as the needle rises out of the materia l and ends before needle comes down into
If
the material.
turn
the feed
Turnin
g the feed
(NOTE) LK3-B220-6
adjustm
cam
ent
by degrees.
cam
in its
is requ ired, loosen the wo
rotat
ing direction, it advances the feed Liming and vice versa.
rm
wheel shaft nut and the
& -7 for Denim. the Liming of feed cam should he advanced a h
- u -
hexag
onal bolt and
it
earlier.
(2)
Adjusting
tack
width
motion
(Except
LK3-B221-4
- -
7)
Adjusti
justments
adjustment was mad e, no further adjustment
First of all, adjust to gel the correct posit ion between work clamp
fram e s
nM
tack width and lack length motions require very delicate and prec ise cautions.
firstly on
el
bolt.
the tack width mot ion and then tack length motion with
is
necessary
the needle hole will
then tighten the
4)
Loosen the
bl
hinge
Again , move the presse r arm and set the presser arm so
the needle hole will come
then
ock all the way down, then tighten th e fastening s
tighten the fastening screw.
unl
ess absolutely required.
come
fa
stenin g scre
tack
width lever fa : tening screw and lower th e
Make
great
care. Once the
and feed plate
I) Let the first needle come down
into the needle hole.
2) Loosen the adjusting screw and
raise the
block
hinge
tack
width regulator lever shaft,
tight en the adjusting
and
3) Loosen the feed bracket, fastening
screw. move the press
sel the
exa
ctly at the centre of work
w.
exactly at the
by
loosening
hinge block until the
is
in lev
el
er
po
sition of bracket so
centr
e of work clamp,
ad-
correct
clamp
with the
scre
w
arm
and
that
clamp
cre
w.
tha
t
,
(3)
Adjusting
tack
length
motion
1)
Raise the clutch and
needle comes down into the needle hole with tack length
regulator
2)
Loosen the feed
regu
of the ta
not so as to move the
:i)
Loosen ba
the ce
tighten the ball stud.
in
the marked position of the rim of the feed cam.
la
tor
rod brings to its fullest ext nt in the elongated hole
ck
length regula tor lever, set the position of
ll
stud and s
ntr
e of
work
turn
the driv
brack
et fastening screw, when the tack length
work
et
the po it ion of press
clamp will come to the nee dle hole, then
ing pulley by hand until
clamp.
er arm
so
tpe
bracket
that
- 1
5-
(4)
Adjusting
I)
2)
3.
Adjusting
The
and
1)
2)
3)
4)
5)
*
motions
Adju~ting
( i) At the
be positioned
(ii)
Make
cycle.
Adjusting dial of labelling
The
When you
neath the dial to its
the pre-determined,
This
lack length motion
~top,
the tack length
In
case of adjustment. readjust the position of feed plate window.
dial plays a role to determine the position of label.
set the material by work
adjustment
thread
upper thread knife, lower thread knife and thread presser
are
oparated by the power
As the needle rises out of the needle hole
thread
The
As soon as the upper
the lower threarl. At this moment, the tip of the upper
The
po~ition
The
the tip of the knife
In
correctly. The
to prevent the thread from slipping out.
thread presser releases the
upper thread knife enters the upper thread loop while the
after
machine stops. When the left treadle is depressed, the connecting rod adjuster disengag
adjusting the knives, firstly remove the needle plate and
on
LK3-B221-4--7
mo
ve
pre~~er
at
the
exte
constant
is
made
trimming
thread
catching the loop in the process of forming the final stitch.
bar
and
n.
mak
e adjustments
plate for guide
centre
nt to fix the position, then you can get
of feed plate window.
at
maximum and
damp,
measurement on the materials.
by
moving the dial back and forth.
ba~e
back and forth
make
~ur
e
put the lab el
~o
that
that
the above position is kept during one
unci ·r·
Labels'~
mechaism
are
mounted to the pinion
transmitted
thread
is
pulled up by the
the connecting rod spring pulls the knives to trim both thread
from the knife
after
the first stitch, the
just before the fifth stitch is formed.
thread
in
the following steps.
cam
.
take
-up lever, the lower thread knife
thread
knife is just
shuttle
make
thread
point comes to its downmosl
sure the knives are installed
the needle hole plate may
presser catches the upper
in
front of the needle hole .
Fastening
~tud
s.
screw
brack
catches
es from
et
(1)
Thread
At
the recess portion of the kni
second stitch, and
trimming knives, the po int of low
is positioned at the red
trimming
the
thr
lever
ead trimming leve r roller is ju st above
at
roller and
fe
the stop position of
mark
of the needle plat
lower
cam,
that
er thread
thread knife
is the
thread
knife
e.
-
16
-
Thi
s adjustment is made by loosening the
a
nd movi
ng it back and forth.
rack
(2) Timing
(3)
Lower
of
knife cam
Lo
oHen
the fastening screw for knife
timing so that the needle may not touch the thread trimming
knives and the upper thread loop
Adjust the thread trimming
so
that
the upp er thread knife ma y hook the upper
during hook point trav
at
the final stitch.
thread knife and thread trimming lever
elling
cam
(B)
downward
cam
(A)
and adjust
may
not touch the knives.
by loosening fastening
thread
with upper thread loop
At the stop position,·
loosen two screws
adjust the thread trimming adjusting screw
that
the point of
thread
sitioned
on the needle plate.
knife will be po·
at
the red
the
screw
loop
and
so
lower
mark
(4)
Adjusting thread
trimming
~hole
~pper
stopper
thread knife
screw
When work
so
that
0.
3mm
At
this moment, the needle hole is positioned
of upper thread knife.
clamp
thread
from the bottom of knife
is lifted up, adjust by stopper
trimming lever roller
cam
may
.
be
apart
at
the
screw
about
rear
- 17 -
(5)
Tension
4.
Adjusting
As the needle begins to rise for the final stitch, the upper thread knife enters the upper thread loop.
And the main tension
When the left treadle
needle
Before the needle comes down for the second stitch, the thread nipper
is
tightened. Make adjustments, if necessary, in the following manner.
of
connecting rod spring
the
thread
is
released
is
depressed, it
bar
thread nipper
If
the connecting rod spring has too weak tension, the knives
often fail to trim the threads and in.some
break
. If.
with the needle causing to
has too strong tension
knives. thus the machine does not work smoothly .
spring
spring hook left
tension, loosen the spring hook set screw and move the
or
extra
right.
on
power will be needed to
extreme
the other hand, the spring
cases, collide
To
nipper
to
allow sufficient length of the thread for the knife.
works
is
lightly tightened to prevent the thread from slipping and being jammed.
the thread nipper mechanism and
is
released and the main tension
at
the first stitch, the
drive
the
adjust the
(2)
Adjusting timing
Adjusting
screw
----Ill
of
the
thread nipper
-.....~at-----Thread
\l!..--f"
--
nipper
lever
n;pp"
7>--+~
shaft
nipper
pawl
lever
(1)
At the stop position, adjust the roller position
so that
marking.
adjusting
Timing
•haft
0 Guide
its
line
f
centre
shaft
will be matched with the red
At the position of the
roller being over the
cess posit ion of the
the end of guide
must be positioned
upper line of the cam.
In case of adjustment,
loosen the fastening
and
rotate
nipper shaft.
the
re·
cam,
shaft
at
the
screw
thread
-
18
-
(3)
At
the
stop
position (before lifting work clamp), the end of guide
of
cam
on the condition
In
case
of adjustment, loosen the
shaft
and adjust to bite the
lightly. (At
At
this position, when the
the bollom of the recess portion of the cam.
that
time, the roller position is
that
thread
the
thread
thread
thread
nipper
shaft
nipper stop lev
nipper adjusting lev
nipper adjusting lever pawl· and
2mm
slop lev
er
contact
apart
from recess portion of the cam).
er
is disengaged, adjust the roller to move smoothly
s the thread nipper adjusting lev
er
screw, fix the position of the
must be positioned
stop
lever, then fasten the
at
the lower line
er
thread
nipper
pawl.
screw
to
(4)
the
At
recess portion of the cam, adjust the tension
adjusting thumb screw so
will be light and
being
it
5.
Adjusting
Unless the clutch and
consumed for the machine's operation,
position of the roller being
at
the position of the roller
in
the recess portion of the cam,
so
that
the main tension will be loosened.
clutch
and brake
brake
that
the main tension
are
over
in order, the machine may not stop properl y,
(5)
the
At
the position of the lever pawl being
out of the stop lever, adjust the
adjust
or
machine's durability may be considerably lessened.
moving left and right so
guide
ma\' catch
the
thread
that
surely.
the needle
more
thread
bar
power
released
nipper
thread
may
be
In
case of adjustment, please follow the instruct ions.
(1) Clutch lever catch and clutch stop latch
Adjust the position
the clutch stopper is about 3 mm.
(2)
At
the position of trippi ng do g being ov
arc
at the idle pulley and th e slow speed puller.
of
the
clutch
stop
latch so
er
that
the
mm
imum distance between the stop
the stop cam. adjust the level of belt guide so
- 19
that
cam
and
the belts
(3)
At the position of tripping dog being out the stop cam,
adjust the position of the stopper so
are
at
the idle pulley and the high speed pulley.
'
Bobbin
Idle pulley
winder
5~5mm
pulley
\1~
(
5)
Timing of stop cam and clutch stopper
Please adjust stop cam so
may disengage with clutch lever catch one stitch
before the end of sewing cycle.
please see
with clutch lever catch within
sition where the groove of stop cam falls into line
with clutch stopper. In case of adjustment, loosen
two set screws and move stop cam left or right to adjust. At
by turning high speed pulley by hand.
that
the belts
(4)
Adjusting height of trip-
ping dog
Please adjust the position
of lever so that clutch may
come into function when
tripping dog reaches three
quater position of stop cam.
that
clutch stop latch
In
that
clutch stop latch
that
time, make sure to get proper timing
will
±30·
from the po·
of
this case,
disengage
(6)
Pressure of
Adjust the clutch lever spring so
to permit the clutch stopper to fit positively into the groove of
the stop cam to
loosen the fastening screw and change the angle of the adjusting
plate
(7) Pressure of the stop spring
If
the
stop spring is too weak
down into the material as the machine is going to stop
machine may stop
stop spring is too strong
machine
adversely affect the durability of this machine. Adjust the stop
spring tension
-
the
clutch lever spring
that
it has just enough tension
stop
the machine gently.
.
in
tension, the needle
at
wrong position. If, on the other hand, the
in
tension, the impact exerted on the
at
the time of stopping will be increased and this will
by
turning the nut.
20
-
In
case of adjustment,
may
come
or
the
(8)
Position
When tripping dog is
by
loosening fastening screw so that the distance between the
ann
hole and emergency stop lever
of
emergency stop lever
at
the highest position of stop cam, adjust
is
about 1 mm.
(9)
Clutch
lever
In
case that the right
treadle is depressed
strongly, it causes the
belts coming off out
of the pulleys due to
too much movement
of the clutch. In order
to avoid this, adjust
in
the following
manners.
*At
the starting, set the shaft by the fastening screw so that the actuating lever shaft contacts with the
of
lever pin and adjust to get the distance
the lever. After completion, take off the screw.
3mm between the bed and the clutch actuating lever by lowering
(1
0)
Clutch actuating lever stopper
In order to prevent the right treadle from going upward, the
clutch actuating lever stopper is limited the movement of the
clutch actuating lever. In case of adjustment, adjust in the
following manners.
1.
Be
the machine
2.
Fix the actuating lever shaft with set screw.
3.
Set the machine in normal position.
4.
Adjust the height of the stopper to be 1 mm by loosening
nut.
5.
After completion,
(Set screw
is
included
at
stop position.
take
out the set screw.
in
the accessory box)
actuating
Nut
6.
Adjusting
While the machine is
and also the knife bar remains inoperative. When the left treadle is depressed after the machine has
automatically stopped, the knife
clamp is raised
work
up.
clamp
in
lifter
operation, the work clamp stays down even if the right threadle is depressed
bar
tripping lever is actuated to operate the knives and then the work
-
21
-
t:-. case of the adjustm ent. do m the following manner
(1)
At the stm.)
onnc
ctor
l:.tch
is
(2)
Fasten set screw for latch
connecting lever.
position, when the left treadle
I o o
i
erat
c with the clearance of less than 0.3 mm as the work clamp connecting lever
1
adjascent with the clutch actuatinR" connector lever stop.
at
the position
(3)
In
to be less than about 0.3 mm between clutch connector lever
stop and work clamp connector latch
(4)
When the left treadle is depressed
engage until the work clamp
(5)
(6)
(
7)
is
depressed, adjust the length of the clutch
that
the operation, adju st
make sure that the thread
the clutch actuating connector
the adjustment mentioned
When the left treadl e is depressed upto th e stopper, adjust the
height of the work clamp to be
Adjust the height of the presser arm to
the pres
At the stop position, when the tett
before the thread trimming rnechani
relation b tweem the
ser
s.
actuating
the lower portion of the latch meets work clamp
by
work clamp
trimming mechanism does not
con11eC.ting
lewr
in
step
arm and the presser
<:;top
lever
10
<>haft
lever the
as
per Page. 8.
after
the machine stopped,
lever latch is out of
step. if incomplete,
~)
a
nd
3)
.
mm
::~part
from the feed plate.
Le
2.5
--3.0mm between
<>priug
by set screw.
i-r
eadle is depressed,
o;;m 1s
Hnri
engaged, adjust the
the collar so
ueedle
1
:;
tightened.
bar
clearance
repeat
just
that
the
thread guide
7.
Adjusting
The
two presser feet
when the work clamp is depressed and
catch
the material up between the left a
In case
becomes very dirty.
In the adjustment,
(
1)
Amount of opening bet ween the feet can be adjusted by the nut (!).
(2)
In case
being d
guide towa rd you.
(3)
At
the stop position, in case that the feet wi
loosen nut
work
that
this action mar not work
that
the feet will not be closed when the right treadle pedal is
ep
re ed th right treadl e pedal, uns
clamp
a.-
e opened about 2 mm when th work clamp
do
iu the follow ing manners.
on
8221-1
actuat~d
nd
in
good condition, the sewing ref.l!lt on eyelet buttonhole
and
right.
crew
-2
1.
he ma chine by treadle peda
the fastening screw ® a
ll
not open when the left treadle pedal 1s depressed,
® and adjust th e he ight of stop lever adjusting screw.
-
22
-
are
lifted up. T he feet will be closed
l.
In this case,
dep~
essed,
at
nd
pull the feet closing
the stop po si tion,
the
feet
end
bar
(4)
In case that the feet will
closed when the right
be
treadle pedal is depressed and
before the machine s
just
the length of the fed
closing conn 'clor bar.
8.
Needle
cooler
not
tart
s, ad-
mechanism
*This
machine can be used
with the needle cooler
vice
at
your option.
case
that
you may need,
please contact y
This
need le cooler device
is featured to
thread breakage with s
thtic