Page 1
•
Finest Quality
2-3
NEEDLE
FLAT
BED
COVERSEAM
MACHINE
FS300
SERIES
2-3
NEEDLE
CYLINDER
BED
COVERSEAM
MACHINE
CS100
SERIES
ENGINEER'S
MANUAL
EN9424
REV. 03/19/99
Page 2
•
PREFACE
This Engineer's Manual
is
written
tor
the technical personnel
who
are responsible
for
the service and maintenance
of
the machine.
This manual describes
"Standard Adjustment", "Adjustment Proceduresft,
~Results
of
lmproperAdjustment~,
and other
important information which are
not
covered
by
the
Instruction Manual.
It
is
advisable to use the relevant Instruction Manual and Parts List together with this Engineer's Manual when carrying
out
the
maintenance
oi
these
machines.
This manual gives the
"Standard adjustment" on the former page under which the most basic adjustment value and on
the latter page
the
"Results
of
improper adjustment" under which errors and troubles arise .
Page 3
CONTENTS
1.
SPECIFICATIONS
...•.............•••......•....•.•.•••..........•..........•...••.•••......••••.•••••••••••••••••••••.•••••••••••.••••.•••••••••••••••..•••••.
4
2.
MOTOR
PULLEY
AND
BELT
.••••••••.••...•.•••••.•••..........•..•.••.......•
; .............................................................................. 5
3.
MODEL
NUMBERING
SYSTEM
............................................................................................................................ 6
4.
STANDARD
ADJUSTMENT
.•••••••...••••••.....••..•••••••••••••.••••...••.•••....•.•••....•.........••..•..........•.•....••••••......•.•...•....•......•
10
{l)FS300 ...................................................................................................................................................................................................
10
1)
NEEDlE
FEED
TIMING
.......................................................................................................................................................................
10
2)ADJUSTING
THE
TIMING
RELATION
BETWEEN
tHE
NEEDLE
BAR
AND
LOOPER
(SYNCHRONIZATION)
.................•.••.................••....
10
2)'SVNCHRONIZATJON
.........................................................................................................................................................................
12
3)
RETURNING
AMOUNT
OF
THE
LOOPER
............................................................................................................................................
14
4)HEIGHTOFTHENEEDLEBAR
............................................................................................................................................................
14
S)
Cl£ARANCE
BETWEEN
THE
LOOPER
AND
NEEDLE
..........................................................................................................................
16
6)ADJUSTINGAMOUNTOFTHELOOPER-AVOID ...............................................................................................................................
16
7)
POSmONOFTHENEEDLEGUARD
...................................................................................................................................................
16
8)
POSITION
OF
THE
FEED
DOG ...........................................................................................................................................................
18
9)
SPREADER
......................................................................................................................................................................................... 20
10)
LOOPER
THREAD
CAM .................................................................................................................................................................... 22
II)
POSITION
OF
THE
PRESSER
BAR
....................................................................................................................................................... 22
12)
POStnON
OFTHENEEDLETHREAD
TENSION
RELEASE
(WITHOUT
THREAD
TRIMMER)
.....................................................................
24
13)
POSlJION
AND
HEIGHT
OF
THE
PRESSER
FOOT
............................................................................................................................... 24
14)
POSinONOFTHETHREADGUIDE
....................................................................................................................................................
24
<2>CS100 .................................................................................................................................................................................................. 28
1)
NEEDLE
FEED
TIMING
.......................................................................................................................................................................
28
2)
ADJUSTING
THE
TIMING
OF
THE
NEEDLE
BAR
AND
LOOPER(SYNCHRONIZATION)
....................................................................... 28
2)
'SNYCHRONIZING
LOOPER
AND
NEEDLE
MOTIONS
....................................................................................................................... 30
3)
RETURNING
AMOUNT OF
THE
LOOPER
................................................................................................................................................ 32
4)
HBGHT
OF
THE
NEEDLE
BAR
............................................................................................................................................................
34
5)
POSmON
OF
THE
NEEDLE
GUARD
................................................................................................................................................... 34
6)
CLEARANCE
BETWEEN
THE
LOOPER
AND
NEEDLE
..........................................................................................................................
36
7)
ADJUSDNG
AMOUNT
OF
THE
LOOPER-AVOID
............................................................................................................ : .................. 36
8)
POSmON
OF
THE
FEED
DOG ...........................................................................................................................................................
38
9)
SPREADER
......................................................................................................................................................................................... 40
10)
LOOPERTHREADCAM
....................................................................................................................................................................
42
11)
LOOPER
THREAD
WRAP-UP
PREVENTING
CAM .............................................................................................................................. 42
12)
POSITION
OF
THE
PRESSER
BAR
....................................................................................................................................................... 44
13)
POSITION
OF
THE
NEEDLE
THREAD
TENSION
RELEASE
(WITHOUT
THREAD
TRIMMER)
..................................................................... 44
14)
POSITION
AND
HEIGHT
OF
THE
PRESSER
FOOT
...............................................................................................................................
44
15)
POSITION
OF
THE
THREAD
GUIDE
....................................................................................................................................................
46
4.
OlHER
PRECAUTIONS
...................................................................................................................................... 47
(1)
POINTS
TO
WHICH
LOCKTTTE
IS
APPLIED
.............................................................................................................................................
47
5.
TROUBLES
AND
CORRECTIVE
MEASURES
....................................................................................................... 49
•
3
Page 4
1.
SPECIFICATIONS
FS300 Series
FS322
I
FS322
I
FS332
I
FS332
Sewing
speed
~
With Puller
6000
R.P
.M.
6,500 S.P.M.
(Max) left
or
right hand undertrimmer 5500
Stitch length
1.6to
2.8 mm
No.
of
needle
2
3 2
I
3
Needle gauge
3.2,
4.0 5.6, 6.4, 4.8 3.2, 4.0
I
4.8, 5.6, 6.4
Top covering
Without
With
Oiff.
feed
ratio Gathering stitch 1
:1.5
Stretching stitch 1
:0.6
Needle
UY128GBS
#65/025 to 90/036
Presserfoot lift
B.Omm
Lubricating oil UNION SPECIAL Designated oil (Part No. 28604R)
CS1
00
Series
CS122
I
CS122
I
CS132
I
CS132
Sewing
speed
~
With Puller 6000 R.P.M. 6,500 S.P.M. {Max) Undertrimmer 5500 R.P.M.
Stitch
lenQth
1.6to3.2mm
No.
of needle 2 3
2
3
Needle gauge 3.2,
4.0, 4.8 5.6, 6.4 3.2, 4.0, 4.8 5.6, 6.4
Top
covering
Without With
Diff.
feed
ratio
Gathering stitch 1
:1.5
Stretching stitch 1 :0.6
Needle UY12t GJS #55/022 to #90/036
Presserfoot lift
B.Omm
Lubricatina
oil
UNION SPECIAL Designated
oii(PM
No. 28604R)
'*
Depending
on
Devices
•
4
Page 5
•
2. MOTOR PULLEY AND
BELT
FS300 Series
50
Hz
.
so
Hz
Motor pulley
V belt (inch)
Motor
pulley
V belt (inch)
Sewing speed {s.p.m.)
Fully-
Semi-
Fully-
Semi-
outer dia. (mm)
s!bmerged
submerged
outer dia. (mm) submerged
submerged
type type type
type
6,500
140 35
120 35
6,000
125
I
35
105
35
5,500 110 35 90
34
5,000
100
34 85 34
4,500 90 34 75 34
4,000
80
34 70 34
3,500 70 34 60 33
1) Use a UNION SPECIAL clutch
motor
{400W).
2) Use
an
M type V belt.
3)
The table shows the sewing speeds obtained
by
the use
of
motor
pulleys with different diameters and V belts
with different lengths.
4) Note that the effective diameter
of
the pulley
of
the machine head
i~
54mn
CS100
Series
50
Hz
60Hz
Motor pulley v belt (inch)
Motor pulley V bell
(inch)
Sewing speed (s.p.m.)
Fully- Semi-
. Fully- Semi-
outer dia. (mm)
submerged
submerged
outer dia. (mm)
subrre'lJE'f
submerged
type type type
type
6,500 145 43
40
120
41
38
6,000
135
I
43 40 110
41
38
5,500
120
I
41
38 100
41
38
5,000
110
I
41
38
90
39
37
4,500
95
I
41
38 80
39 37
I
4.000
85
39
37 70
39 37
3,500
75
39
37
60
38
35
1)
Use a
UNION
SPECIAL clutch
motor
(400W).
2)
Use
an
M type V belt.
3)
The table shows the sewing speeds obtained
by
the use of
motor
pulleys with different diameters and V belts
with different lengths.
4) Note that the effective diameter of the pulley
of
the machine head is 57.5 mm.
5
Page 6
•
3. MODEL NUMBERING SYSTEM
CS100 SERIES ORDERING INFORMATION
Stitch type Sub-class
Number
of
needles Needle
spacing
Devices
2 = Bot!om coverslitch
(describes typical application)
2
"'
Two
needle machine
32"'
3.2
mm
CC'
= Chain cutter
3 =Top & bottom coverstitch
c· = Col!arette
3 "' Three needle machine
40=4.0mm
MD'
= Metering device
E'
=Elastic 48 = 4.8
mm
TC'
"'Tape
culler
Basic
frame style
H":
Hemming
56"'
5.6
mm
TF'
= Binding feed device
CS
= Cylinder
bed
K'
= Coverseam
60=6.0mm
UT" = Thread trimmer
FS
=Flat
bed
L •
=lap
seam
64
= 6.4
mm
'1-9
= Variety
or
devices
U'
= Universal
'00·99
" Variety
ol
sub-class
~
l
I
I I
I
FS332C01-3D56/TC4/
I
l
Generation Feed type
Stllch tongue
1 =First 2 = Dlflerential
Represents
the
shape
of
the
throat plate
2 =Second 5 = Differential & puller
stitc-h
tongue.
3
=Third
A = For short stitch length
A
c;:=-
B =
For
medium
stitc-h
length
Bt:='"
C =
For
long stitch length
c c::::7'"
0
=
For
all
stitch lengths, collaretle,
D='"
coverseam & elastic applications
Page 7
•
CS100 SERIES ORDERING INFORMATION
SUtch
type
Sob-class
Number
of
needles
Needle
spacing
Devices
2 = Bottom coverstitch (describes typical application) 2
=Two
needle machine
32"'
3.2
mm
cc·
"' Chain culler
3
=Top
& boHom coverstitch
C' = Co1larette
3 = Three needle machine
40=
4.0 mm
MD'=
Metering device
E'
=Elastic
48·,
4.8 mm
TC'
=Tape
culler
Basic
frame style
H'
=Hemming
56=
5.6 mm
TF'
= Binding feed device
CS
= Cylinder bed
K'
= Coverseam
60=6.0mm
UT"
= Thread trimmer
FS
=Flat
bed
L'
=Lap
seam 64 = 6.4 mm
'1·9
= Variety of devices
U'
=Universal
'00-99
=Variety
or
sub-class
.
~I
I
I
I
I
I
l
I
CS132H01-2C32/UT2/
I
Generation Feed type
Stitch
tongue
1
=First
2 = Differential
Represents the shape
of
the throat plate
2
=Second
5 = Differential & puller stitch tongue.
3
=Third
A
"'
For short slilch length
A~
8
"'
For medium stitch length
Be?"
C
""
For long stitch length
c
=""
D = For all stitch lengths, collarelle,
D
t:::7
coverseam & elastic applications
Page 8
FS300
Series
Code
Specification
Description of Sub-Class
C01
For Cellarette Basic style
E12 For elastic tape attaching Right hand fabric under trimmer and metering device (Upper side)
E41
For
elastic taoe attaching Elastic tape attaching with puller
and
metering device (Lower side) (with endless rubber)
H01
For
hemming Basic style with hem guide
L01
For
lap seam Basic style
L21
For
l_ap_
seam For the top sleeve of
knit
fabric
C$100
Series
Code Soecification Description of Sub-Class
E11
For Elastic tape attaching Right hand fabric
under
trimmer, (Preclosed Elastic)
E12 For elastic tape attaching Fabric under trimmer,
and
metering device (Upper side)
H01
For Hemming Basic style with hem guide
-
H11
For Hemming With cloth puller
H21
For
Hemming Lett hand fabric under trimmer
K01
Covering With standard fixed seam guide, light weight fabric
K02 Covering With adjustable seam guide for medium to heavy-weight fabrics
K11
Coverseaming With special fold over seam guide
•
8
Page 9
Under-bed thread
trimming
device
Electromagnetic type
Pneumatic
type
Top
Needle Needle
Top
Thread
Needle
covering
Thread
•~o
•~o
Code
For
use on model
thread
Auto-lifter
_,
wiper
covering
•
Auto-lifter
trimmer
wiper
thread
trimmer
(Mecha- (Pneu-
thread
trimmer
nieal) matie)
trimmer
UT1
CS122
0 0
0
UT2
C$132
0
0
0
UT3 CS122
0 0
0
UT4 CS122
0 0
0
UTS
C$132
0
0 0
UT10 FS322
0
0
0
UT11 FS332
0 0 0
UT12
FS322
0 0
UT13
F$332
0
0
0
Elastic tape metering
device
Code
Description
For
use on model
MD1
Metering device (upper side) Electric single stage
FS322, FS332, CS122,
C$132
MD2 Metering device (upper side)
Electric
two
stage
F$322,
F$332,
CS122,
CS13~
MD3
Metering device
(lower side) Electric single stage FS322, FS332, C$122, CS132
MD4
Metering device (lower side) Electric
two
stage
FS322, FS332, C$122,
C$132
Automatic tape feeding
device
Code
I
Description
For
use on model
TF1
Automatic
tape feeding device (upper side)
For
MD1,
MD2
TF2
Automatic tape feeding device (lower side)
ForMD3,
M04
Under-bed thread
trimming
device
•
Code
Description
For
use on model
CC1
Pneumatic
type
chain-off
thread
cutter l Mounted
horizontal
venturi
suction
FS322,FS332
Cloth
puller
Code
Description
For
use on model
PL1
Cloth puller
FS322, FS332, CS122, CS132
>
9
Page 10
•
4. STANDARD ADJUSTMENT
(1) FS300
Standard Adjustment
1) Needle feed timing
.
First screw
(A)
in
operating direction on double eccentric
(B)
of feed drive assembly must
be
straight
up,
when the needle bar is at bottom of stroke.
r--
I~
i\
B
1--B
'
/
A-
il
~
f--A
-
1---
0
2)
Adjusting the timing relation between the needle bar and looper
(synchronization): Without gauges
When the blade point
of
the looper moves
to
the left
in
the rear of the needle
and
to
th_e
right
in
front of
the
needle, align the upper end of the eyelet of the left needle with the lower
face
of the
looper
so
that the distance between A and
B.
the side of the left needle to the blade point of the
looper,
should
be
equal.
4J'
A=B
A
B
Vca=
/ca:::
'¢:J
Mov:e
to the left
¢Move
to
the
right
I
Looper
v
Looper
tl--
Left needle
.
Allgn~L
Left
needle
.0.
10
.
Page 11
•
Adjustment Procedures
Remove
top
cover,
oil
reservoir cover, gasket
and
cloth plate.
Loosen screws (C) of sprocket (D).
• Rotate lower
main
shaft
in
operating direction clockwise, until
the
first screw (A) on double eccentric (B) is straight up.
•
Holding
pulley
to
prevent
it
from turning,
rotate
handwheel
of
upper
main
shaft
until
needles
are
at
top of their
stroke.
•
Torque
screw
(C)
to
45-46
in.
lbs. (5.2-5.4Nm).
•
Replace
top
cover,
oil
resevoir
cover,
gasket
and
cloth
plate.
Note:
Earlier machines
have
(4)
screws.
• Turn handwheel in operating direction until bottom
of
looper is
even with tap of needle eye. Note dimension (A)
Continue
turning
handwheel
in
operating direction until bottom
of
looper
is
even
w~h
top of needle
sye
when
looper
is
in
front
of
needle.
Note dimension (8)
•
If
(A)
is
greater than (8)
-loosen
(C)
on sprocket
(D).
-Turn sprocket
(D)
in
operating direction
-Tighten
screws
(C)
-Repeat
above
two steps until (A)"' (8)
•
If
(A)
less than
(B)
-loosen
screws
(C)
on
sprocket
(D)
-Turn sprocket
(D)
in
reverse direction
-Tighten screws
(C)
-Repeat sbove
two
s1eps
until (A)"'
(B)
Results
of
Improper Adjustment
• Needle breakage
• Looper missing needle thread
•
If
the timing
is
not correct, skip
st~ching
may
occur.
11
Page 12
FS300
Standard Adjustment
2)' Synchronization
• Rotate handwheel
in
operating direction until
pin
in
looper holder contacts gauge plate.
• Reposition needle bar as required to set pointer
of
indicator
gauge
at
"0~.
• Rotate handwheel in reverse direction until
pin
in looper holder again makes contact with gauge plate.
• A variation
of
(1) graduation
on
scale is permissible .
•
12
Page 13
•
Adjustment Procedures
o Rotate handwheel in operating direction until pin (9 contacts
gauge plate
e .
o Loosen screw (!) in needle bar connection & position needle
bar
8 as required
to
set pointer 0 of indicator gauge 0 at
~a~
tighten screw (!)lightly.
o Rotate handwheel
in
reverse direction until pin 8 makes
contact with gauge plate
0 .
Note reading on gauge. A variation of
(1)
graduation
on
scale
is permissible.
To adjust:
o Loosen screws
0
on
looper drive sprocket
€t
.
o If reading is above
~a"
tum sprocket towards operator.
o
If reading is below "0" tum sprocket away from operator.
o snug screws
0 .
o
Continue
to
check
& adjust in both operating & reverse·
directions until pointer 0 of indicator gauge
4D
comes within
(1) graduation
on
scale when turning handwheel
in
either
direction.
o Tighten screws
0.
o Torque needle bar screw
(9
to 20 inllbs.
CD
Results of Improper Adjustment
o Skipped stitches
o
Improper chaining
13
Page 14
•
FS300
Standard
Adjustment
3) Returning
amount
of
the
looper
When the looper is
in
the extreme right position,
the
distance between the blade point
of
the looper and the
center of the right needle is 4.4 ±
0.1
mm.
}
/Right
needle
V Looper
c=
I
-+-+---
4.4 ± 0.1
mm
4) Height
of
the
needle
bar
When the looper moves
to
the left and the blade point of the looper comes out from the left side of the left
needle
by 0.7 to 1.0 mm, the lower face of the looper aligns with the upper end
of
the eyelet
of
the left
needle .
c
-I"'-J-0.7to
1.0
mm
I/
Looper
~of---
Align/
Lett
needle
14
Page 15
•
Adjustment
Procedures
o Loosen the looper base setscrew
0 and adjust the returning
amount of the
lOoper.
(Use
a 5/32
inch
hexagonal wrench.)
o Loosen the needle bar holder screw 0
and
adjust the height
of
the needle bar.
(Caution)
After
the adjustment,
check
that
the
direction
of
the
needle
clamp
is
correct
and
the
respective
needles enter the center
of
the
holes
of
the
throat
plate.
@
0
\\
0
0
mill
0
0
0 0
Results
of
Improper
Adjustment
o If the returning amount is large,
skipping stitch and
tangling stitch
may occur and the range of the
thickness of the cloth to be sewn is
reduced.
o If the returning amount is small,
skipping stitch and tangling stitch
may
occur.
o If the distance of C is large, skip
stitching and tangling stitch may
occur.
o If the distance of C is small, skip
stitching and tangling stitch may
occur.
o
If
defective stitch occurs with the
wooly
nylon thread,
make
the
distance C as small as possible.
15
Page 16
•
FS300
Standard
Adjustment
5) Clearance between
the
looper
and
needle
Clearance between the
blade
point
of
the looper
and
the grooves
of
the rightlleft needles is 0 to 0.05 mm.
(Clearance
of
the
middle needle becomes larger a liHie.)
Otoo.os
mm
VRight
needle
Looper
j
j
===;~/~::::-;;::::~;.
;;;;
Oto0.05mm4
0
Needle
Top end
of
looper
6)
Adjusting
amount
of
the looper-avoid
When the needle descends, the top point
of
the needle touches the
back
of
the looper
at
the position of
213
from the
upper
side
of
the looper.
Needle
desce:tlr
~
i
>13
Back
of
looper
t
113
7) Position
of
the needle
guard
<D
Rear
needle
guard
o
The
height
of
the rear needle guard is in the position
that
the rear needle guard is 1.2
mm
above the top
of
the
needle
when
the
looper
moves
to the left as shown in the figure.
o The longitudinal position
and
inclination
of
the rear needle guard are in the position that
when
the right
side of the respective
needles comes to the blade top
of
the looper, the top
of
the
needle slightly touches
the rear
needle
guard.
<?
~
~
!.:.;
==~t.2mm
guard Slightly
touch
® Moving needle guard
16
o When
the
looper
advances, the clearance between the needle
and
the moving needle
guard
is
0.05 to
0.13mm.
==J~;;:~=t
0.05to0.13mm
Page 17
•
Adjustment
Procedures
o Loosen the looper base setscrew 0 and adjust by moving
the looper base back and forth.
o Loosen the two screws G and
adjust by rotating the eccentric pin
8.
0 Amount of the avoid increases in
the direction
of+.
o Amount
of
the avoid reduces
in
the
direction
of-.
(Caution)
After
the
adjustment,
check
again
the
clearance
between
the
blade
point
and
the
groove
of
the needle.
o Loosen the
screwO
and adjust the-
height and inclination of the
r~ar
needle guard
0.
Loosen the screw
G'!>
and
adjust
the
longitudinal
position
of
the rear needle guard
0.
(Caution)
Check
that
the
rear
needle
guard
does
not
break
the
loop
of
the
needle
thread
by
touching
the
groove
of
the needle.
o Loosen the screw
Gt
and
adjust the
clearance between the moving
needle guard
fD
and the needle.
(Caution)
Check
that
the needle
is
never
caught
between
the
moving
needle guard
and rear needle
guard
in
any case.
Results
of
Improper
Adjustment
o
If
the clearance is too large, the loop
of the needle thread is not scooped
and the
back
of
the
looper
hits
strongly the top point of the needle
which causes the damage
of
the
needle
point
o
If
the
clearance
is
too
small,
skipping stitch will· occur due to the
damage
otthe
tip
of
the looper, the
needle breakage, and the large
clearance between the back
ot
the
.
looper and the needle.
o If the amount
of
the avoid is large,
the clearance
of
the
back
of
the
looper and the needle becomes
large,
and
skipping
stitch
and
tangling stitch
will occur.
o If the amount of the avoid is small,
the needle hits strongly the back of
the looper. This causes the damage
of the
needle
point,
the needle
breakage and the damage on the
back
of
the looper.
o
If
the returning
amount
is large,
skipping stitch and tangling stitch
occur,
and
the
range
of
the
thickness
of
the cloth to be sewn is
reduced .
o If the returning
amount
is small,
skipping stitch and tangling stitch
occur.
17
Page 18
FS300
Standard Adjustment
8} Position
of
the
feed
dog
o
The
clearance of the left/right sides of the feed
dog
should
be
equal
in
the slots
of
the throat plate.
o
At
the maximum travel, the clearance of the main feed dog and differential feed
dog
is equal to
A=
A', 8
:8'.
o The height of the teed dog is 1.0 mm at the top of their stroke.
o The
tilt of the feed dog is parallel
to
the throat plate when the needle bar is at the highest position.
1.0mm
•
18
Page 19
•
Adjustment
Procedures
Open the cover located at the rear side of the needle entry.
o Adjust
the
longitudinal position of the main feed dog after
loosening the
nut@) and rotating the eccentric nut
ID.
o Adjust the longitudinal position of the differential feed dog
after loosening the nut
Q)
and rotating the eccentric nut
0.
o Adjust the inclination of the feed dog after loosening the screw
4D
and rotating the eccentric shaft inside with a slit-screwdriver
through the hole
~.
o Loosen the screw
G>
and adjust the height of the main feed
dog@).
o Loosen the screw
§)
and adjust the height of the differentia!
feed dog
@1.
Results
of
Improper
Adjustment
o If the letvright positions of the feed
dog are
incorrect,
the left/right sides
and the throat plate
will wear out.
o Heating and abnormal noise will
be
produced.
o The feed components
wiH
wear out
early. And,
the looseness, bending
and
abnormal
noise
will
be
produced.
o If the inclination
of
the feed dog
is
raised toward you, starting
of
the
workpiece
will
be
affected.
o If the inclination of the feed dog is
towered toward you,
it
may
cause
the
irregular
stitching
and
puckering .
o
If
the position of the feed dog
is
high,
it
causes
the
return
feed,
skip
stitching and defective chain-off.
o If the main feed dog, differential
feed
dog and throat plate come
in
contact
each
other,
it
will
cause
the
breakage.
o
If the position
of
the
fe:ed
dog is low,
the
stitch
length
becomes
short
when the sewing is finished.
19
Page 20
•
FS300
Standard
Adjustment
9)
Spreader
(!)Timing
Descend.[!,
Highest
point
2.5 ±
0.1
mm
c~~~~~g~~~~
.:::0
Return
Just
when
the
needle descends 2.5
mm
from
the
highest point of the needle bar, the spreader
begins to return from its extreme left position.
®Position
of spreader
II
5.5 ±
0.1
mm
..,.-JIHI
~
11.5
:±
0.2
mm
(10.8 ±
0.2
mm
throat
plate for 4.8 mm
or
more
needle gauge)
Left needle
0.3
to
~j=ii::;:f~i,~o~o'::;:;/
0.5
mm
f
@Fixing
spreader thread guide
Spreader
Extreme
right
~Return
0.4to
\
o.a
mm
Top
blade
should
be
between left
side
and
middle
of
the
groove.
Show
spreader at
extreme
right
position
when
setting
height
®Needle
clamp spreader thread guide
Fixing
spreader
thread
guide
Needle
clamp
spreader
thread
guide
20
@Stroke
•..
Direction
o1
cloth feeding
fl..
~ l';"'''
,
,,
~~--.--..~
,,
19±
0.1
mm
o The height is 11.5 ±
0.2
mm
(4.0 + 3.2
gauge).
(10.8 ± 0.2
mm
for4.8
mm,
5.6
mm.
and
6.4
mm
gauges.
o When the spreader is in the extreme left position,
the distance between the center of the
left needle
and the top blade of the spreader is
5.5
± 0.1
mm.
o When the
spreader
returns
to
the
right,
the
clearance between the spreader and the left needle
is
0.3
to
0.5 mm.
o When the spreader
is in
~he
extreme right position,
the top
blade of the spreader
__
should be between
left side and middle
of·
the spreader thread guide
groove.
o The height
is
0.4 to 0.8 mm from the surface
of
the
spreader.
o When the needle bar is in the lowest position, the
clearance between the needle
clamp spreader
thread guide and the
upper
face
of
the fixing '
spreader thread guide is 4.0 ± 0.5 mm.
o The center of the
hole of the thread guide aligns
with the left side of the fixing spreader thread guide
groove.
Page 21
•
Adjustment
Procedures
o Adjust
the
timing
by
loosening
screw
€!)
of
the
spreader
eccentric cam
@)
and rotate the spreader eccentric cam
~.
o Adjust the stroke by loosening the nut G
and
move back and
forth.
If it
is
moved toward you,
the
stroke becomes small,
and to the back
it
becomes large.
o Adjust the height of the spreader by loosening the screw@)
and moving the spreader 0 up and down.
o Adjust the clearance between
the
spreader and left needle
by loosening the
screw@)
and
move the
spreader 0 back
and forth.
o Adjust
the
extreme left position
by
loosening the screw G
and move the spreader G
to
the left and right.
0 <
o Adjust the fixing spreader thread
guide~
by loosening the
screw~.
o
Adjust
the
needle
clamp
spreader
thread
guide G by
loosening the screw @).
Results
of
Improper
Adjustment
o If the timing is too advanced,
the
needle does not catch the covering
thread when it descends. This
is
likely to cause the skipping stitch.
On
the
contrary, if the timing
is
too
retarded,
the
right needle is likely
to break
as the resistance when the
covering thread is
pulled from
the
spreader becpmes
large~
o If
the
movement
amount
of
the
spreader
is
not set right, it will cause
skip stitching
of
the top
covering
thread.
o If
the
height
of the spreader is no!
set right,
it will cause skip stitching
of the top covering thread.
; o
If
the
clearance
between
the
spreader and needle is small, it will
cause
the
needle breakage. If it is
large,
it will cause skip stitching of
the top covering thread.
o If
the
protruding
amount
of
the
spreader
is
large,
it
will
cause
uneven stitching of the top c9vering
thread.
If
it
is
small, it will cause skip
stitching of the top covering thread.
o If the height
of
the
fixed spreader
thread guide
is
set as high as
0.
8 ,
the top covering
perlonnance by the
spun
thread
is
improved.
But,
defective looping
may
occur when
other threads are used.
o
If
1he
position of the fixed spreader
thread
guide
is
not
correct, it will
cause
skip
stitching
of
the
top
covering thread.
o If the position of the needle clamp
spreader thread guide
is
not correct,
it
will cause skip stitching of the top
covering thread.
21
Page 22
•
FS300
Standard
Adjustment
10)
Looper
thread
cam
CD
Timing
Needle
descends
,(\
l];aackof
~
looper
Align
with
lower
face
of
looper
Looper
vthread
Looper
thread cam
o When the looper thread is pulled from the highest
point of the looper thread cam, the top point
of
the
left needle aligns with the lower face
of
the looper.
ell
Position of looper thread guide plate and looper thread cam pawl wire
1.6mm
Looper
thread cam
Wire
Tou~a--;::l;===·
====:0~tj
9.6
mm
Looper thread
guide plate
@
looper
thread
cam
pawl
®Position
of thread guide and auxiliary thread tension
guide
plate
Auxiliary thread
11)
Position
of
the
presser
bar
22
o The height
of
the looper thread guide plate is 1.6
mm from the lowest part
of
the looper cam
to
the •
upper part
of
the looper thread guide plate.
o
The
rear
side of the looper thread
cam
pawl
touches
the wire, and its front side is 9.6 mm above the
upper face
of
the wire at the highest place
of
the
inside.
o The looper thread cam pawl and wire are to
be
positioned in the
center
of
the
looper thread cam
plate.
o The. position of the
thrE!ad
guide is to
be
set
at
the
position that the looper thread
just
becomes tight
when
the
looper is in the extreme left.
o Adjust
the
tension of
the
auxiliary thread tension
to make as
low as the thread is
just
stabilized .
The
clearance between the presser bar. bracket and
the presser bar bushing
is
0.8
mm
when the feed dog
is
under
the
throat plate and the bottom face
of
the
presser foot touches the upper face of the throat plate
at the
time
that
the needle
bar
is
in
the lowest point.
Page 23
•
Adjustment
Procedures
o Adjust the timing of the looper thread cam
by
loosening the
two screws
@I.
o Adjust the height of the looper thread guide plate by loosening
the screw
E1i)
and move the looper thread guide
plate®
up
and down.
Adjust the looper thread cam pawl by loosening the
screwS
and move the looper thread cam pawl
61
up and down.
Adjust the lateral relation of the looper thread guide plate by
loosening the screw
ED
and move the looper thread guide
plate
®to
the left and
right
(Caution)
Use a 3132" hexagonal
wrench
for
the
screw
t!>.
o Adjust the position of the thread guide by loosening the two
screws$
and move the thread guide
E@
(2 pes.)
up
and down.
o Adjust
by
loosening the two
screws~
and move the presser
bar bracket
€i)
up and down.
Results
of
Improper
Adjustment
o If
the
timing
of
the looper thread
cam
is
too
advanced,
the
skip
stitching on the back of the looper
will occur.
If
it is too retarded, the
tightening
of
the
thread
will
be
inferior.
o If the clearance ·between the looper
thread
cam
pawl and
the
wire
is
large, the looper thread suddenly
slackens and
_skip
stitching on the
back side will occur.
o If
the
looper thread cam is not
il'
the
center,
the
cam
will
be
damaged.
o If
the
thread guide is raised, the
looper thread after sewing
will be
slack.
o It the thread guide is lowered, the
looper thread
after
sewing will be
tight.
o
If
the
clearance
between
the
presser bar bracket and the presser
bar bushing is
small, the bottom
face
of
the
presser
toot
can
not
contact tightly to the throat plate.
o
If the clearance is large, the lifting
amount of the presser foot
will be
reduced.
23
Page 24
•
FS300
Standard Adjustment
12)
Position
of
the
needle
thread
tension
release
(without
thread
trimmer)
When the presser foot is raised by 3 mm, the thread tension opening
pawlet
touches the thread tension
6)
and when the presser foot is in the highest position, the thread tension disc opens and there is no tension
on
the thread.
=~=---'
3mm
Throat plate
13) Position and height
of
the presser
foot
CD
Adjust the position of the presser foot so that the needles enter the center
of
the needle entry holes in the
presser foot
on
condition that the presser toot is set correct to the presser bar.
CV
Adjust the height of the presser foot so that when the needle bar is
in
its highest point, the needle point
does not come out from the lower face of the presser toot.
Lower
bushing
Spreader
Needles
"'"'-'""'lf"'-'""""'"f
Max.
8.0
mm
Throat
plate
Note:
On
elastic
machines
height
is
7.0
nm.
14) Position
ofthe
thread
guide
<D
Middle thread guide and thread guide holder
Spun thread
Cotton thread
Wooly nylon thread
Tetoron thread
( Fix at the
extreme
right
position
of
the
slot. )
24
Left needle
thread
27mm
27mm
27mm
27mm
£
Middle needle Right needle
thread thread
25mm
23mm
25mm 23mm
25mm 23mm
25mm 23mm
Page 25
Adjustment Procedures
o Adjust
by
loosening the
screw@.;!
and move the bracket
4».
E>
e
o Adjust the position by loosening the screw
€il
and move
th~
presser foot
ii>
to the left and right.
o Adjust the height by loosening the
nut®
and rotate the screw
~
and hit it to the lever<$ so that the needle top comes 0.3
mm
over from the lower part of the presser foot when the
needle is in its highest point. At this time, loosen the two
screws
® and
fix
the collar i> so that the clearance between
the
collar and the lower bushing is 0.2 mm.
Adjust
by
loosening the nut
€!1
and rotate the
screw~
so
that
the
clearance between the top end
of
the screw ~ and the
lever~
becomes 0.5 mm on condition that the presser toot
descends and rests tightly on the throat plate.
l!ll
IIL.--i!ll
@:J;:--'--.li""""~""~
0.5
mm
o Loosen the
screw~
and fix the thread guide attaching base
(i)
to the extreme right. Loosen the
screw~
and adjust the
respective heights
.2
referring to the left table. Make the fine
adjustment watching the actual stitching.
Results of Improper Adjustment
o If the position
of
the presser toot is
not correct,
it
will cause defective
and non-straight sewing.
o
If the height of the presser
loot
is
not correct,
it will cause breakage
of
the spreader, the needle scratch
on
workpiece, defective sewing and
the lack of feeding force.
o
If
it is raised, the needle thread
is
tightened.
o
If
it is lowered, the needle thread
slackens.
o The tightened stitches of the right
needle
and
left
needle
can
be
simply slackened
if
the thread guide
holder is moved to the left.
25
Page 26
•
FS300
Standard Adjusbnent
® Needle
bar
needle thread release
o When
the
loop
of
the needle thread is not
easily
formed, raise the needle thread release as shown in the
figure
at
the time
of
the lowest point of the
needle
bar.
Lowest
point
of
needle bar
ohN~dle
ba• eyelet
/
~Needle
thread release
o
If
the needle thread is a cotton thread, raise the right needle thread release so that the right needle
thread
only
touches
at
the
time
of
the lowest point
of
the needle bar.
Lowest
point
of
needle
bar
_,
_ _;)\
Right needle thread release
o
If
the needle thread is a spun thread, lower
the
needle thread release
so
that the needle thread does not
touch it.
Lowest
point
of
needle bar
-!],
Needle
bar
balance
Needle thread release
® Spreader balance thread guide
h should be positioned that
the
top covering thread does not slacken and the spreader does not pull
out
the thread,
when
the spreader has moved
to
the extreme left position.
@ Needle thread nipper
26
'
0
/Not
slacken
r
-K-~
Thread
guide
All
the
needle
threads
are
to
be
threaded
through
the
needle thread
nipper,
except
the
cotton
and teteron
type
threads.
Page 27
•
Adjustment Procedures
o Loosen
screw®
and adjust by moving the needle thread
release
f)
up and down.
o Loosen
screw®
and
adjust by moving the right needle thread
release
~
up and down.
o Loosen
screw~
and adjust by moving the thread guide
1!9
up
and
down.
Resuhs
of
Improper
Adjustment
o If it is raised, the loop of the needle
thread becomes
larger~
o
If
it is lowered,
the
loop of the needle
thread becomes
smalfei::".
o
If
the loop is not formed (the loop is
too small) and skip stitching occurs,
raise the needle thread release.
o
If
the loop is excessively formed
(the loop
is
too large) and the skip
stit(fhing
occ~;~rs,
lower the needle
thread release.
o
lf it is raised, the thread slackens .
o
If
it is lowered, the thread tightens.
o Use of the nipper
depenling
on
the
threads
to
be
used
..
Not
used
for
cotton thread and
tetoron thread.
Used for wooly nylon thread and
spun thread (stretching thread).
27
Page 28
•
(2) CS100
Standard Adjustment
1) Needle feed
timing
FiJSt
screw 0
in
operating direction
on
double eccentric
49
of
feed
drive
assembly
must
be
straight
up,
when
the
needle
bar
is
at
top
of
stroke.
0 0
0
2} Adjusting the timing
of
the needle bar
and
looper
(Synchronimtion) :
Withcut
Gauges
28
When
the
blade
point
of
the
looper
moves
to
the
left
in
the
rear
of
the needle
and
to
the
right in
the
front
of
the
needle,
and
the
top
end
of
the
hole of
the
left needle aligns with the
lower
part of
the
looper,
the
distance
between
the
left side
of
the
left needle
and
the
blade point
of
the
looper should
be
equal
to
the
distance
A
and
B .
A=B
A
~
Move
to
the
left
¢ Move to the right
Looper
Left
needle
Left needle
Page 29
•
Adjustment Procedures
Remove
top
cover, oil reservoir cover, gasket and cloth plate.
• Loosen screws (C) of sprocket {D).
• Rotate lower main shaft in operating direction clockwise, until the
first screw {A) on double eccentric (B)
is straight up.
• Holding pulley to prevent
i1
from turning, rotate handwheel of upper
main shaft
until needles are at top
of
their stroke.
• Torque screw {C) to
45-46
in. lbs. {5.2-5.4Nm).
Replace top cover, oil resevoir cover, gasket and
cloth plate.
Note: Earlier machines have (4) screws.
• Turn handwheel
in
operating direction until bottom of looper is
even
wrth top of needle eye. Note dimension {A)
• Continue turning handwheel in operating direction until bottom
of
looper is even with
top
of
needle sye when looper
is
in front of
needle. Note dimension (B)
•
If
(A) is greater than {B)
--Loosen (C)
in
connector (D).
-Move
connector {D) away from connector (E)
-Tighten
(C)
-Repeat
above
two
steps until
{A)
= (B)
• If
(A)
less than {B)
-Loosen
screw {C) in connector (D)
-Move
connector (D) toward
(E)
-Tighten
(C)
-Repeat
sbove two steps until
(A)=
(B)
)
)
Results of Improper Adjustment
• Needle breakage
• Looper missing needle thread
•
If
the timing is not set right, it is likely
to
occur skipping and tangling stitches.
29
Page 30
•
CS100
Standard Adjustment
2)' Synchronizing looper
and
needle motions :
With
Gauges
30
•
Set
looper
to its extreme right position.
• Rotate handwheel clockwise until looper
has
moved
.400"
(10
mm) from right to lett.
•
Set
indicator
point
to
"OH
on
top
of
needle bar.
• Move
looper
to its extreme right position
by
turning handwheel counterclockwise.
• Continue rotating handwheel counterclockwise until looper
has
moved
.400~
(1
0 mm) in that direction.
• Indicator point should return to
"0~
in that direction.
• Synchronization is correct when looper moves .400 {10 mm)
back
and forth (clockwise and
counterclockwise
and
dial indicator
on
needle
bar
moves to zero in each direction.
(Note)
Synchronization can
only
be
obtained
after
needle/feed timing
has
been
set,
and
only
by
moving
looper
drive lever rocker
shaft
until synchronization
has
been
obtained.
Looper at extreme right
-{
.400" t end position
l..--~~~.::~
____
1 I
v---------~
Needles
Fig.1 ClockWise
(
10
mm) end position
j
.400" t Looper
at
extreme right
~
1.'------~
\!}'----------
Needles
Fig. 2 Counterclockwise
9/64allen
Fig.4
~
•
----
-
-----
Shorten if needed
F1g.S
"l=
t'
Fig.3
__:!m'f--
-"
10
0
f:J
I
0
~
lid
o.
01
I
0
~
~~
'I
0
I L.l
~
Page 31
•
Adjustment Procedures
o Drain oil.
o Remove
oil pan.
o Modify a standard
9/64" allen wrench (Fig.4).
o Flag indicator from TT146 may need to
be shorten (Fig. 5).
o Remove looper and mount modified
allen wrench in looper
holder.
o With needle bar at bottom dead center adjust
looper holder
so allen wrench is
.400" {10 mm) from throat plate (Fig. 6).
o Tum machine
in
opera1ing
direction until allen wrench contacts
throat plate, assemble indicator
to
top of machine
as
shown
in
(Fig. 3) and set indicator point to
~a~.
o
Tum
machine in opposite direction until allen wrench contacts
throat plate.
(Note)
Reading of indicator.
If distance
is
less than
~a~.
• Loosen screw 0 (Fig. 7).
• Move drive lever crank
4D
away from looper rocker lever
8.
• Retighten screw
0.
• Recheck indicator readings in both rotating directions, until
they are the same,
+1- 1 mark.
• Torque screws
0.
• If distance is more than
~o·.
• Loosen screw G (Fig. 7).
• Move drive lever crank
4D
towards looper rocker
lever@.
• Retighten screw
0.
• Recheck indicator readings
in
both rotate directions. until they
are the same,
+1-
1.
• Torque screw 0 to 130
in.
lbs. (15 Nm) .
• Replace removed parts.
• Refill with UNION SPECIAL 175 oil. (Part No. 28604A)
0
0
)
)
ResuHs
of
Improper Adjustment
o Skipped stitches
31
Page 32
•
CS100
Standard Adjustment
3)
Returning amount
of
the
looper
When the looper is
at
the extreme right position, the distance between the
blade
point of the looper and the
center
of
the right needle is 4.8 ±0.1 mm.
32
}
/Right
needle
V Looper
I
4.8±0.1
mm
Page 33
Adjustment Procedures
Results
of
Improper Adjustment
o Adjust the returning amount
by
loosening the looper holder
If
the
returning
amount
is
large,
binder screw e. skipping stitch and tangling stitch will
occur.
And
the
thickness of the material
to be sewn will be reduced.
It
the
returning
amount
is
small,
skipping stitch and tangling stitch will
occur.
4.8±0,,
mm
~
'\
16\
~
e
•
'
33
Page 34
•
CS100
Standard
Adjustment
4)
Height
of
the
needle
bar
When the looper moves
to
the left and the point
of
the looper comes out from the lett side of the left needle
by
1.0
±0.3
mm, the
lower
part of the looper aligns with the top end
of
the hole
of
the lett needle.
c
-r::-t-
1.0
±0.3 mm
V
en:=
¢:J
Move
to
the
left
II
Looper
h
Left
needle
5)
Position
of
the
needle
guard
34
Q)
The
height
of
the
rear needle guard is adjusted so that
the
poin1
of
the
right needle comes to
the
1/2
height
of
the contact surface of the rear needle guard when the blade point
of
the looper aligns with the
right side
of
the right needle.
The pushing amount is 0 to
0.1
mm
to
all needles.
(The blade point
of
the looper should not contact the respective grooves
of
the all needles.)
Align
I
J-o·~_:~::::~~~~~~:
....,,
Contact surface
of
rear needle guard
Pushing
amount
Oto0.1mm
® The height
of
the front needle guard
is
2.0 ±0.1 mm from the lower part
of
the looper.
The
face
of
the
guard position is parallel to all needles having a clearance of 0.25 ±0.1 mm.
2.0 ±0.1 mm
:f:=;:;;;=;~~
[;l:V
Looper
r--
Front needle guard
Needle
0.25±0.1
mm
1
_D
6 0
'I~
ph;
Front
needle
guard
Page 35
•
Adjustment
Procedures
o Loosen the screw 0 of the needle bar binder bracket inside
the face cover and adjust the height
of
the needle bar.
(Caution)
After
the adjustment,
check
that
the
direction
of
the needle head
is
right
and
that
the
respective
needles enter
the
center
of
the
holes
of
the throat
plate.
@
0
\\
0
0
)
0
mm
0
~
~
0
0'-::
o Adjust the height of the rear needle guard by loosening the
screw
6B
and move the rear needle guard
Q)
up and down.
Adjust the pushing amount by loosening
the
screw
it
and
move the rear needle guard back and forth.
o Adjust the height
of
the front needle guard
by
loosening the
screw
~
and move the front needle guard ~ up and down.
Adjust the inclination at the same time. Adjust the clearance
for the needle
by
loosening the screw ~ .
(Caution) Use a
3132"
hexagonal wrench
for
the
screw ® .
Check
that
there
is
no
looseness
on
the left/right
sides
of
the
rear needle
guard
when
tightening
the screw
41)
•
Results
of
Improper
Adjustment
If the measurement of C is large, skip
stitching and thread tangling occur.
If the measurement of C is small, skip
stitching and thread tangling occur.
o
If the clearance between
the
rear
needle
guard
and
the
needle is
large, it causes the skipping stitch,
the damage
of
the blade point
of
the
looper and needle breakage.
o
If the rear needle guard and
the
needle hits strongly, it will cause the
damage of the needle top.
o
If the clearance between the front
needle
guard
and
the
needle is
large, the loop becomes
small and
the skipping stitch will occur.
o If the front needle guard and the
needle
hits
strongly,
the
loop
becomes large and the skipping
stitch, the damage
of
the
needre
point and the damage
of
the blade
point of the looper
will occur.
35
Page 36
•
CS100
Standard
Adjustment
6) Clearance
between
the
looper
and
needle
Clearance between the blade point of the
looper and the grooves of the right and left needles
is 0 to
0.05
mm.
(Clearance of the middle needle is a little larger.)
v Right needle
0 toO.OS
mm
looper
lj
==;;:!/~:::<:::::;~~~
DtoD.OSmm
I'
0
Needle
Top point of looper
.
7)
Adjusting
amount
of
the
looper-avoid
36
o The clearance between the blade point
of
the looper, and the grooves
of
the left and right needles should
be
equal.
longitudinal
moving
1
amount
of
looper
{Ref. 1.54
mm)
Left
needle Right needle
~Locus
ofloope'
L.
o When the looper moves to the right, the tip
of
the left needle contacts the back
of
the looper at the
position
of
213
from
the
upper side
of
the looper.
/Left
needle
)I
Loope'
Needletipr
(Adjust when the needle is replaced with an excessively different sized needle. Check that the clearance
between
the
looper
and
the
needle
is
correct
and
the
needle
tip
contacts the back of
the
looper
at
the ,
posilion
of
213
from the
upper
side of the looper.)
Page 37
•
Adjustment
Procedures
o Adjust by loosening the looper base setscrew G and move
the looper holder back and forth.
<D
Adjustment of looper path
Loosen the setscrew
0 of the looper path shifting cam
0.
Place
the engraved line D about 3 mm from the engraved line E and
rotate the cam
8 to adjust so that the clearance between the
rightlleft
needles and the blade point of the looper should be
equaL
®Adjustment
of avoid
Amount of avoid
small t
Amount
of
avoid large
~~~
Loosen the screw 0 and nut 0
of
the looper
cam
guide
i)
.
Then move the screw 0 back and forth to adjust. {Use a 3/8"
spanner
forO.)
Needle Path of looper
•••
'
/
{Caution)
After
the
adjustment,
check
again
the
clearance
between
the
blade
point
of
the
looper
and
the
groove
of
the
needle.
Use a
1/8"
hexagonal
wrench
for
the
screw
0.
Results
of
Improper
Adjustment
o
If
the clearance is large, skipping
stitch of
the needle thread scooping
occurs. And
the
damage
of
the
needle point will occur due
to
the
strong
hit on the back of the looper.
o
If
the
clearance
is
small,
the
damage
of
the-blade point of
the
looper and the
needle
breS.kage
will
occur. And, the skipping stitch will
occur
as
the clearance between the
back of the .looper and the needle
becomes large.
Left needle Right needle
~st)~
Position
of
D-C
o Looper path between the engraved
lines
D and C is left upward.
The
clearance of the left needle is large
and skipping stitch occurs.
o If the engraved line E
is
turned more
than
3 mm from
D,
the looper path
is left downward. The
damage
of the
blade point
of
the looper and needle
breakage occur.
o
If
the amount
of
avoid is large, the
clearance between the needle and
the
back
of
the
looper
becomes
large.
In
this case, skipping stitch
and tangling stitch occur.
o
If
the amount of avoid is small, the
hitting of the needle and the
bac~
of the looper becomes strong.
In
this
case, the damage of the needle top,
needle breakage and scratch on the
back of the looper occur.
37
Page 38
•
CS100
Standard Adjustment
8) Position of
the
feed dog
38
o The clearance between the slot on the throat plate and the leftlright sides
of
the feed dog should be
equal.
o In the maximum stroke end of the main feed dog and differential feed dog, the clearance should be equal
toA=A'andB=B'.
o Height of the teed dog is 1.0 mm at the top of
their
stroke.
o Tilt of the feed dog is parallel
to
the throat plate when the needle bar
is
in its highest position.
o Adjust so that the throat plate and the main feed dog do not contact each other even
if
the main feed dog
is
in its maximum stroke end .
o Adjust so that the throat plate and the differential feed dog do not contact each other even
if
the stroke
is
maximized.
Page 39
•
Adjustment Procedures
o Loosen screw
6
to
adjust the left/right position of the main
feed dog
fj.
o Loosen
screw
@4
to
adjust
the
left/right
position
of
the
differential feed dog
8).
o Loosen screw
'I)
and move the main feed dog back and forth
to
adjust the longitudinal position of the main feed dog
ti
.
o Loosen screw
f1)
and rotate the eccentric nut
to
adjust the
longitudinal position of the differential feed dog
8)
.
o Loosen
screw@!)
to adjust the height of the main feed dog
fi
and the differential feed dog
f)
.
o To adjust the maximum stroke of the main feed dog, loosen
screw
e and rotate spacing stop
~so
that
it
contacts the pin
@I
when the main feed dog has reached its maximum stroke
and while the throat plate does not contact the
main-
feed
dog.
o To adjust the maximum stroke of
the
differential feed dog,
loosen screw
til
and enter the stopper pin
~to
the end when
the differential feed dog has reached its maximum stroke and
while the differential feed dog does not contact the throat
plate and the front end of the main feed dog.
Results
of
Improper Adjustment
o
If the lateral position of the feed dog
is
not
correct, the left/right sides of
the feed dog and
the
throat plate
will wear out. Heating
and
abnormal
noise
will be produced. Also, the
feed
components
will
wear
out
quickly and looseness and bending
of the components
will occur. Also,
abnormal
noise
from
the
components
~ill
be produced.
o If the height.of the feed dog
is
low,
the
stitch
length
at
the
finish
of
sewing becomes smaller.
o
lithe
height
o1
the feed dog
is
high,
it
will cause the return feed, skipping
stitch and defective chain-off.
o
If
the
main feed dog, differential
feed dog, and throat plate come
in
contact
With
each other, it will cause
breakage.
39
Page 40
•
40
Standard
Adjustment
9)
Spreader
CD
Timing
Descend~
Highest
point
2.5:!:
0.1
mm
C~~~~~~~~~~
.::::::>Return
Just when the needle descends 2.5 mm from
the
highest
point of the needle bar. the
spreader
begins to return from its extreme left position.
Q)
Position of spreader
II
5.5:!:
0.1
mm
--r-*'1
~
@Fixing
spreader thread guide
Spreader
Extreme
right
Top
blade
should
be
between
left
side
and
middle
of
the
groove.
Show
spreader at
extreme right
position
when setting height
® Needle clamp spreader thread guide
Fixing spreader
thread
guide
Needle
clamp
spreader
thread guide
®Stroke
.
:,
•.
_;;
'
,.
Direction
of
cloth
feeding;;
/
;-t
...
19±0.1mm
~
..
-~
''
...
o The height is 11.5 ± 0.2 mm (4.0 + 3.2
gauge).
(10.8 ±
0.2
mm for 4.8 mm,
5.6 mm,and 6.4 mm gauges.
a When the spreader is in the extreme lett position,
the distance between the center
of
the left needle
and the top blade of the spreader
is
5.5 ±
0.1
mm.
o
When
the
spreader
returns
to
the
right,
the
clearance between the spreader and the left needle
is
0.3 to 0.5 mm.
o When the spreader is in the extreme right position,
the
lop
blade
of
the spreader
..
should be between
left side
and
middle
of-
the spreader thread guide
groove.
o The height is
0.4
to
0.8 mm from the surface of the
spreader.
o When the needle
bar
is
in
the lowest position, the
clearance
between
the
needle
clamp
spreader
thread
guide
and
the
upper
face
of
the
fixing
spreader thread guide
is 4.0 ± 0.5
mm.
o
The
center
ol
the
hole of the thread guide aligns
with the left side of the fixing spreader thread guide
groove.
Page 41
•
Adjustment Procedures
o
Adjust
the
timing
by
loosening the screw
Got
the
spreader eccentric cam t))
1~Fo~;;:::===E~
and rotating the spreader
-b
0
'
eccentric cam
@)
.
o
Adjust
the
stroke
by
loosening
the
nut G and
moving it back and forth.
If
it
is moved toward you, the
stroke becomes small. If it
is
moved
to
the
back,
the
stroke becomes large.
o
Adjust
the
height
of
the
spreader by loosening the
screw
81
and
move
the
.
spreader e up and
down._
o
Adjust
tile
clearance
between the spreader and
the left needle by loosening
the
screw@ and
moving
the
spreader f)- back
and
forth.
o
Adjust
the
extreme
left
position by loosening the
screws e and move the
spreader
@I
to the left and
right.
o Adjust the fixed spreader
thread guide
Gl
by loosening
the
screws ~ .
o Adjust the needle clamp
spreader thread guide
§iby
loosening the screw
@;!
.
Results
of
Improper
Adjustment
o
If
the
timing
is
too
advanced,
skipping stitch is likely to occur as
when
the
needle decends,
the
needle does not catch the covering
thread.lf the timing is too retarded,
the right
needle
is likely to be
broken
as the resistance of the covering
thread becomes strong
·when
it
passes the covering thread looper.
o If the movement amount of the
spreader is not set right, skipping
stitch of the top covering thread
occurs.
o
If
the height of the spreader is not
set right, skipping stitch of the top
covering thread occurs.
o
If
the
clearance
between
the
spreader and the needle is small,
the needle breaks. If it is large,
skipping stitch of the top covering
thread occurs.
o If
the
protruding amount
of
the
spreader
is
large, uneven stitch of
the top covering thread occurs.
If
it
is small, skipping stitch of the top
covering thread occurs.
o
If the height of the fixed spreader
thread guide is set about 4
mm,
the
performance of the top covering
with the spun thread is improved.
But, for other threads,
it is likely
to
cause the defective pick-up of the
thread.
o
If
the position of the fixed spreader
thread
guide
is
not
set
right,
skipping stitch of the top covering
thread occurs.
o
If the position of the, needle clamp
spreader thread guide is not set
right, skipping stitch
of
the top
covering thread occurs.
41
Page 42
•
CS100
Standard Adjustment
10) Looper thread cam
G)
Timing of the looper thread cam
® Position
of
the looper thread
cam
thread
guide
Highest point
of
looper thread cam
Wooly
nylon
1hread
42
When the needle bar descends and the
tip
of the left
needle
aligns with the lower part of the looper, the
looper thread
can
be cast off from the highest point
of
the looper cam.
The looper thread
cam
thread guide
is
to
be
set
in
the
center
of
the slot.
(In
case
of
wooly
nylon
thread, at the upper end of the
slot.)
Page 43
•
Adjustment
Procedures
o
Timmg
of the looper
thread
c:am
is adjusted by
loosening the screw
EI9
and rotating the looper
thread cam
~
.
At this time, set so that
the
col!ar@i>
contacts~
.
In
case
of
lateral
adJUstment, loosen the
screw
@»
of the collar
(i)
and adjust on condition
that
the
looper
thread
cam $ contacts
the
collar
€!).
o Loosen the screw
I)
tor
the parallel and the
screW
~
lor
the clearance so
that the middle latch
ED
is parallel
to
the looper
thread guide base and
the clearance
is
4.0 mm.
o Loosen the screws
i:lS
and
liD
. and adjust
by
moving the lett
needle thread
guide@) and the thread control finger
E&
up
and
down.
(Caution) Use a 3132" hexagonal wrench for
the
screws$,
EEl
and
a>
.
Results
of
Improper Adjustment
o If the timing of the looper thread
cam
is too advanced, skip stitching
on the back of the looper occurs.
If
the
timing
of
the
looper
is too
retarded. thread tightening is not
well.
o If the looper thread cam
is_
not set
in the center, the cam is scratched.
o
If the clearance between the middle
latch and the looper thread guide
base
is
more
t~an
4 mm, the looper
thread suddenly slackens and skip
stitching on the back of the
looper
occurs.
o
If the thread guide
is
raised too high,
the looper thread after the sewing
is finished becomes tight.
o
If the thread guide is lowered too
much, the looper thread after-the
sewing is finished becomes slack.
43
Page 44
•
CS100
Standard Adjustment
12)
Position
of
the presser
bar
When the feed dog is under the lower part
of
the throat
plate and the bottom face of the presser foot contacts
the upper face of the throat plate at the lowest point of
the needle bar, the clearance between the presser bar
bracket
and
the upper end of the presser bar bushing is
O.Bmm.
13)
Position
of
the
needle thread
tension
release
(without
thread trimmer)
When the presser foot is raised by 3.0 mm, the thread
tension
opening
pawl 8 contacts
the
thread
tension
disc
(!)
, and when the presser foot is raised at its highest
point, the thread tension disc opens and there is
no
tension on the thread.
3mm
=~=-'
Throat
plate
14)
Position
and
height
of
the presser
foot
44
G)
Adjust the position of the presser foot so that the needles are positioned to enter the centers of the holes
of the needle entry of the presser foot
on
condition that the presser foot is set right to the presser bar .
® Adjust the height of the presser loot
so
that the needle top does not come out from the bottom face of the
presser foot when the needle bar is
in
its highest point.
Lower
bushing
Spreader
Max.8.0mm
Throat
plate
Note:
On
elastic
madrlnes
height
is
maK:iltun 7 .Omn
Page 45
•
Adjustment
Procedures
o Loosen the two screws
4!l
and adjust the position by moving
the presser bar
bracket~
up and down.
o Loosen screw
@.:,
and adjust
by moving the bracket
4»
.
o Adjust the position by loosening the
screw~
and moving the
presser foot
lil
to the left and right.
o Adjust the height
by
loosening the
nut
@)and
rotate the screw
~
and hit it to the
lever®
so that the needle tip comes 0.3
mm over from the lower part of the presser foot when the
needle is
in
its highest point. At this time, loosen the two
screws
(i)
and fix the collar
€!)
so that the clearance between
the collar and the lower bushing
is
0.2
mm.
Adjust by loosening the nut
(ij
and rotate the
screw~
so that
the clearance between the top end of the screw
~
and the
lever(!)
becomes 0.5
mm
on condition that the presser foot
descends and seats tightly on the throat plate.
Results
of
Improper
Adjustment
o
If
the
clearance
between
the
presser bar bracket and the presser
bar bushing
is
too small, the bottom
face
of
the
presser
foot
is
not
closely fitted on the throa1-plate.
If
the clearance is too large, the
lifting amount
of
the presser foot
becomes
smcill.
Thread tension not being
_released.
No
tension during sewing.
o
If
the position
of
the presser foot
is
not correct,
it
will cause defective
sewing and
non·straight sewing.
o
If the height
of
the presser foot is
not correct,
it
will cause breakage
of
the spreader, needle scratch on
workpiece, defective sewing and
lack of the feeding force.
45
Page 46
•
CS100
Standard
Adjustment
15) Position
of
the
thread
guide
CD
Middle thread guide
and
thread guide attaching
base
-----------
Left needle
thread
Spun thread
16mm
Cotton thread
16mm
Wooly
nylon thread
16mm
Tetoron thread
16mm
@ Needle bar needle thread release
Lowest
point
of
needle bar
~
Nee~::"
Needle thread
release
Lowest
point
of
needle
bar
·~·if\.~·-·
release thread release
Lowest
point
of
needle
bar
~
Needle bar
rr -])
balance
~Needle
th,ead
release
® Spreader balance thread guide
r
-V~'·••en
Thread guide
@ Needle thread nipper
46
~
Middle needle
thread
14.5 mm
21
mm
21
mm
21
mm
Right needle
thread
13mm
21
mm
21 mm
21
mm
{Fix
at
the
extreme
right
point
of
the
slot.)
o When the loop
of
the
ne_edle
thread is not easily formed, raise
the
needle thread release as shown
in
the left figure
at
the time of the
lowest point of
the
needle bar.
o
If
the needle thread is a cotton thread, raise the right needle
thrE!ad
release
so
that the right needle thread only touches
at
the time
of
the lowest point
of
the
needle bar.
o
It
the
needle
thread is a
spun
thread, lower
the
needle
thread
release
so
that the needle thread does
not
touch it.
When the spreader moved to the extreme left position, it should
be
..
positioned that the top cover thread does not slacken and the-spreader
does not pu
II
out the thread.
All the needle threads are to be threaded
through
the needle
thread
nipper,
except
the cotton
and
teteron
type
threads.
Page 47
•
Adjustment Procedures
o Loosen the screw
61
and fix the thread guide attaching base
~to
the extreme
right
Loosen the screw ~ and adjust the respective heights "
I.
~referring
to the left table. Make the fine adjustment watching
the actual stitching.
o Loosen
screw
4D
and adjust by moving
the
needle thread
release
f)
up
and down.
o
Loosen
screw
i)
and
adjust
by
moving
the right
needle
thread
release
~
up and down.
o Loosen
screw~
and adjust
by
moving
the
thread guide
~
up and down.
4.
OTHER
PRECAUTIONS
(1) Points
to
which Locklite
is
applied
Results
of
Improper Adjustment
o
If
it is raised, the needle thread is
tightened.
o If
it
is lowered, the needle thread
slackens.
o The tightened stitches
of
the right
needle and
iett
needle can be simply
slackened
if
·the
thread
guide
attaching base is-moved
to
the left.
o
If it is raised, the loop of the needle
thread becomes large.
o
If
it
is
towered, the loop of the needle
thread becomes smalL
o
If the loop
is
not formed (the loop is
too
small)
and
the
skip
stitching
occurs,
raise
the
needle
thread
release.
o If the
loop
is
excessively formed,
(the loop is too large) and the skip
stitching occurs, lower the needle
thread release.
o
If
it
is raised,
the
thread slackens.
o
If
it
is
lowered,
the
thread
is
tightened_.
o
Use
of
the
nipper
for
the
threads
used
Not
used
for
cotton
thread
SAd
tetoron thread.
Used
for
wooly
nylon thread
and
spun thread (stretching thread}.
o Use
of
the nipper for the materials
used
Not
used
for
the
light-weight
materials
of
jersey,
knit
and cloth .
.
Used
for
the
heavy-weight
materials
of
jersey, knit and cloth.
Locldlla 222
47
Page 48
•
5. TROUBLES AND CORRECTIVE MEASURES
!;;
Troubles Cause (1)
1. Thread breakage
1--
rl
Threading
H Thread path
H Needle
guard
H Needle
H Needle heat
H Thread
H Thread tension
H Interference
y Chain·off thread defect
2.
looper
thread breakage Thread guide
H
looper
thread cam ad]uslment
~
Thread tension
To
the next
page
Cause
(2)
I Thread caught fn thread guide, Incorrect
threading
Resistance
produced
by
!law, burr, rust
ate.
around
needle
entry
of
throat plata,
stitch
tongue,
looper,
spreader,
needle
thread taka·up nipper, needle guide,
thread
tension disc etc.
Strong
contact
of
needle against
needle
guard
produces a sharp
edge In
needle
guard resulting In thread breakage.
Too thin
needle
lor
the thread
used
Needle
Is
heated depending
on
Iabrie type,
number
ollabllcs,
sewing speed resulting
in thread breakage.
Poor quality and weakness
of
thread
Too strong thread tension
Interference with feed dog, throat plate due
Ito
the Incorrect mounting height
of
looper
Flaw
produced In stitch
tongue
In throat
plate,
lead
dog,
tongue
In
presser
foot,
underside In presser
loot
Resistance
produced
by
flaw, burr, rust
etc. In stitch longue In throat plate,looper,
looper thread cam, thread guide, thread
tension.
disc
Excessive
tension
applied
due
to
the
Incorrect
position
of
looper
thread
cam
liming, thread guide
Too
strong tension
olloopar
thread
Corrective measures
Refer
to
threading diagram.
Remove
the
flaw, burr etc.
and
polish
the
thread guide
finish. However, replace
such
important parts
as
looper or
throat plate
etc.
wllh the new part because their shape
Is
changed
by
being polished
-I'" case needle holder .,
or
looper needle guard
Is
worn
out, replace it with
the
new
part
Replace II with
an
appropriate needle.
l
· [ Use thinner needle. Reduce the sewing speed. Use silicon
oil lubricant device.
Replace
It
With
the thread
ol
good quality.
Reduce
thread
tension.
Adjustable
thread
guide
Is
. I positioned
too
high making the thread tension
too
strong.
Mount it
In the correct position.
Remove the flaw, burr etc.
l
Remove the flaw,
burr
etc. and
polish
the
thread guide
finish. However, replace such parts
as looper with the new
part because
Its
shape
Is
changed
by
being
polished
Rater to stal'ldard ad]uslmenl.
Reduce the thread tension while checking
to
seethe
tension
] balance against the needle thread. top
covering thread.
Page 49
Troubles
I
3.
Needle breakage
I
4.
Worn
out needle point
•
Cause (1) Cause (2)
Corrective measures
From
the
previoc"~':,'c'o'<:':-------------,
-l
Thread
Poor quamy and weakness of thread
Replace II with good quality of thread.
I
-J
Looper avoid
-J
Needle heat
Needle
entry
H Spreader
H Interference
or
looper with scooping
movement
or
needle
H Needle guard
I
H Needle thickness No.
Thread tension
Y Food heigh!, Needle height
Needle guard
--1
Interference with looper
Too strong contact of looper back with
needle
resu!llnyln
thread breakage
Adjust moving amount, front and rear of looper so that I
looper contacts the needle at213 height
of
top
olthe
back. I
f--
In case needle heat is generated Ioeper
thread's
contact
with
needle
causes
thread
breakage, specialty at the time machine
Is
at rest
-----1
Refer to needle heat In needle breakaga
I
f--
Needle hits
the
throat
plate
or
presser loot
---1
Align the needle entry
lo
the needle.
J
because
the
needle
,entry
is
not
correctly
f--
positioned
lor
the plate
or
fool.
Too hnle clearance belween spreader and
~
Refer to standard adjustment
needle
Needle
hils
looper
resulting In
needle~
Make adjustment so that looper does not hit the looper. For
breakage. the correction
of
the contact
at
looper's
back, adjust the
moving amount, front and rear.
Too strong contact against
needle guard
r--------1
Refer
to
standard adjuslmenl
or
needle polnl hils needle guard due to
Incorrect
position.
Too thin needle
lor
fabric used Use thicker noodle.
Noodle thread tension
Is
too strong.
Reduce the
needle thread tension.
Feed
dog
Is too high
or
needle height Is
t--1
Refer
to
standard adjustment vatuo.
too tow
resu!llng
In
needlo breakage due
-.to needle
feed
Jln?orrec-1 height
or
Incorrect position, front J
and
rear
Moving
amount,
front
and
rear
Is
Ill r -
J balanced.
J Check to eee the
height
of
neodte
guard
and
clearance
belwean fl6edla guard and needle.
Adjust
n\oving
amount,
front
and
rear
and
correct
the
incorrect position
of
looper's back and the contact when n
returns.
I
I
I
I
Page 50
•
Troubles{1)
Troubles(2) Cause (1) Cause (2)
Corrective measures
l
S!llch
skipping
1--n Looper does
not
scoop the I
Looper
I Incorrect
shape
ol pointed
end
ol Replace it with the genuine part.
I
right needle thread. looper disables scooping a loop.
----j Needle
Needle
bent.
incorrscl
needle
J
Replace the needle with new one, Correct the
I mounting direction, w10ng needle
mounting direction,
Use
UY121GJS
CSIOO,
UY128
GBS F$300.
-j
Nipper
Not
used.
r--1
Use
nipper.
I
><;,
k
--1
Adjustable
, thread guide Too high _ _t-----t Correct the
height
to appropriate
height
-
kC
k:
--1 Needle height Needle bar position is too high. Refer to standard
adjustment
k
--
-[
Threading Incorrect threading Refer
to
threading diagram.
-
,
..
Right
,,.
Right
--i
Needle guard Not used.
Use
needle
guard.
I
---1
Spreader
Spreader
thread tension Is too strong. Reduce the tension.
--1 Needle
heat
Stitch
skip
occurs
before
thread
Same
described
in
page " Thread
breakage
by
I
breakage
produced
bv
needle heat.
needle
hear
---1
looper
adjustment
Incorrect
clearance
adjustment,
I incorrect returning amount adjustment
Reier
to standard adjustment.
I
--t.
Needle guard. front end rear I
Incorrect
contact
amount,
lncor.rect r
height
Reier to standard adjustment.
I
~~
looper
does
not
scoop
the
looper
I
Incorrect
shape
of
pointed
end
ol
Replace II with the genuine
part
middle needle thread. J
looper disables scooping a loop.
---1
Needle
Needle
bent,
incorrect
needle
I
Replace
tha
naedle
with
naw
one,
Correct
the
\mounting
direction,
wrong
needla
mounting direction,
Use
UY12JGJS
CSIOO,
UY128
GBS
FS300
:-1
Nipper
Being used.
Do
not use nipper.
J
./,
~-Adjustable
thread guide
Height
Is
1oo
low.
Correct height
posi11on
to appropriate height.
~
H Needle
height
Needle bar
height
Is too low.
Reier
to
standard adjustment.
,
..
Righi
Loh
Righi
H Threading
Incorrect
ttlreadlng.
Reier
to threading diagram.
"
To
the
next
page
To
the next
page
Page 51
•
Troubles(1) Troubles(2) Cause (1) Cause (2)
Corrective measures
From
the previous page
From
lh&
prevlou
..
,,
,p
••
o.,g,"o
I Needle thread guard
~
Baing
used.
~
Oonotuse.
I
H Spreader
Spreader thread tension
Is
too
strong.
Reduce
the
tension.
I
H Needle heat Stitch skip occurs before thread
I Same described
In
page "Thread breakage by
I
breakage
produced
by
needle
heat.
- I
neadla heat"
H Looper adjustment
Incorrect
clearance
adjustment,
I Jncorrectratumingamountadjustmeni I
Refer to standard adjustment
I
Needle
guard,
Iron!
and
rear
I Incorrect contact amount, Incorrect I
Refer to standard adjustment.
I
height
~~
Looper
does
not
scoop
the
left
~
r-1 Looper
I Incorrect shape ol pointed end of I Replace it with
the
genuine part.
needle thread.
looper disables scooping
a loop.
~
H Needle
Needle
bend,
Incorrect
needle
Replace the needle wlth new one. Correcl the
:/
I mounling dlrecllon, wrong needle . J
mounting direction,
Use
UY
121
GJS
CS
1 00,
UY12B
GBS
FSJOO.
~
~
H Nipper
Being used.
Do
not
use
nipper.
I
k:::
H Intermediate thread guide Height
Is
too
low. Correcl height position
lo
appropriate height.
I
k:::
k:
H Needle height
Heigh!
Is
loo low.
Refor to slandard adjustmonl.
I
LoH
Right LoH Right
H ThreadlniJ
Incorrect threading
Refer to lhreadlng diagram.
I
H Needle guard
Being used.
Do
not use.
I
H Spreader
Too near to
the
len needle Reier
to
standard adjustment
I
H Needle heal
SUtch
skip
occurs
before
thread
I breakage produced by needle heat. . j
Same doscrlb&d In page "Thread breakag& by
I.
needla heal"
H Looper adjustment
!Incorrect
clearanca
adjustm&nl.
Incorrect ralumtng amounl . I
Refer lo
slanderer
adjustment.
I
'--I
Needle guerd, front and rear
I Incorrect contact amount, Incorrect I
Refer
to
standard adjustment.
I
height
To
the next
page
Page 52
Troubles(1) Troubles(2)
From I he
previous
page
Needle does not scoop the
looper
thread.
(Triangla stitch
skip)
Mlddta
needle
Loll
needle
Stitch
tklp
by middle needle
Slack
ollooper
thread
Stitch aklp by left needle
Slack of looper thread
To
the
next
page
•
Cause (1)
looper
---1
Needle
---1
Needle height
--1 Threading
Looper
ad]uslment
--i
Looper thread tension
---1
Looper thread cam liming
Cause (2)
Correcllve measures
shape
is
incorrect. Replace
II
with
the
genuine
part.
I
Needle
bent
Replace
the
needle
with
the
new
one.
I
Needle
bar
position
is
too
high.
Refer to standard adjustment.
I
Incorrect threading Reier to threaa'ing diagram.
I
Incorrect
claarancil
adjustment,~
ltncorrect
returning amount
Rater to standard adjustment.
I
Tension is
too
weak. Increase tension.
I
Looper thread com timing
Is
too
fast.
Refer
to
standard adjustment.
I
'
Page 53
•
Troubles(1)
Troubles(2) Cause (1) Cause (2) Corrective measures
From tho previous page
--jr:S~k~lp~p~loogQi;o;l.!o>Jp>Cooo'"'"'"'"""''""'
r~r--(~s~p~,,~,~d"'~':=:=:=:=:=:=:=J-~~r:lo~o;:o~'~''~'~'~'~"~'~p~o~o~!~p~o~l~o:;l•::d~o~od:,;o~!l-~~{!R~o~p~!o~o~o~l~!~w~l!~h!!h~o~go~o~o~lo~o~p'~"~·============:J
I (righl) I spreader disables scooping a thread: I
'
To
the
next
page
H Needle
r------1
Needle
bent.
wrong needle Replace the needle
with
!he
new
one,
UY121GJS
CStOO,
UY128 GBS FS300.
H Spreader adjustment
Incorrect height, protruding amount, - Refer
to
standard adjustment.
position, front
and rear J
H
Stationary spreader thread
guide
H Needle height
H Threading
Incorrect height,
position
Needle
bar
posiUon
Is too
tow.
----4
Incorrect threading
Refer
to
standard adjustment
Reier to standard adjustment
}--------1
Refer
to
threading diagram.
H Needle holder
I I
thread
guide
spreader
Incorrect height, position, front and I
rear
Refer
to
standard adjustment.
H Spreader thread tension Spreader thread tension
Is
too
weak.
Spreader
take-up
thread
drawing-in amount
Incorrect drawing-in amount of thread
Skipping
In
top covering stitch by right needle
Riight
n1eedle
~
~::1'
"'
.().
Right needle
Right
needle
does
not
Stride over
the
top
covering
thread.
Lett
Middle Right
\'~
b-ro
-"-
Increase tension.
Reier
to
standard adjustment.
Skipping
In
top covering stitch by right needle
Slmulblneoua
skip
by
left
and
middle needle
~¢
~
Spreader
does
not fetch the top covering thread.
~
··""''~t=
catching thread
Use I
I
I
I
I
Page 54
•
Troubles(1}
Troubles(2)
Cause (1) Cause (2) Corrective measures
From !he previous page
~~
Skipping
in
top
covering
stitch Needle Needle
bent.
wrong
needle
Replace the needle with the new
one.
Use I
(Middle) I UY121GJS CSIOO, UY128GBS F$300.
----j Spreader adjustment Incorrect height, protruding amount, r Reier to standard adjustment.
[ position, front
and
rear
I
--j
Needle height
Incorrect needle bar position
f-----1
Refer
to
standard
adjustment.
I
--j
Threading Incorrect threading Refer
to
threading diagram.
I
~
Spreader thread tension
Spreader
thread
tension
Is
too
weak.
I-
Increase tension.
I
---l
Spreader
pull-oH
Incorrect drawing-in amount of thread
r--1
Refer
to
standard adjustment.
I
Stationary spreader thread I
lnconect height
and
position Refer
to
sll:mderd adjustment
I
guide
Skipping In
top
covering
alllch
by
middle
needle
Middle needle doea
not
scoop
top
covering thread.
Middle Middle
needle needle
~
~~
~
l
ll=IIO
~
~
---"
'I
¢
l~v
;,/
lf''LV
J.
v---:::::
v---::::
Left
~te
Right
Middle needle strides over
top
covering thread.aometlmes.
Middle
Middle
needle
needle
~
~
~
~
/£¢
a?
~~
.._-
-..;;
To
the
next page
Page 55
•
Troubles(1)
Troubles(2) Cause (1) Cause (2)
Corrective measures
From
the
previoos
page
11
Skipping in
top
covering
sHtch
J
----1
Spreader
Ltncorrect shape
ol
pointed
en~-~
Replace it with the genuine part.
(Lett)
disables
scoopi!!g_~
thread.
---j
Needle Needle
bent,
wrong needle
I Replace needle with new one, Use UY121GJS I
CSIOO,
UY128GBS FS300.
----1
Spreader adjustment Incorrect height, protruding amount.
I position,
l10nt
and rear - I
Reier
to
standard adjustment
I
~
Stationary spreader
thread
I
Incorrect height and
posl1ion
guide
Refer
to
standard
adjustment
I
---j
Needle height Needle bar posilion is too low. Refer
to
standard adjustment
I
---j
Threading
lnCOHBCI
threading Reier to threading diaglam.
-j
Spreader thread tension Spreader tension is too weak. Increase tension.
Spreader pul!·olf drawing-in
amount ol thread
I
Incorrect drawing-in amount ol thread
1---1
ROier
to standard adjustment.
I
Loft
Loft
nHdle
needle
Skipping
in
top
covering
etlteh
by
left
needle
~
~~~
~
left
needle
does
not
scoop
top
covering
thread.
12
¢
1.::
~
~
~
~
~
To
the
next
page
Page 56
Troubles(1)
Troubles(2)
Cause (1) Cause (2)
Corrective measures
From the previous page
~~ Single chain thread cast·ofl I
Needle Needle
bent,
wrong needle
I
Replace
the
needle
with
the
new
one,
Use
I
(Right, Middle.Left)
UY121GJS CSIOO. UY128GBS FS300.
H Needle height
Needle bar
position is too high.
Refer
to
standard adjustment.
I
H_
Threading
Incorrect threading
Aelarlo
threading diagram.
I
H Throat plate A of stilch tongue in throat plata
Is
too Increase A. Polish correctly.
I
small.
lD.7(
R
Incorrect polishing
H
looper
r--
A of
looper's
body
section Is
too
Replace lt with the genuine
part
I
large and ridgellna is nolstJaght
lor
which needle thread is likely
to
slip
!rom looper.
t-i..
looper
adfustmenl
Too lUIIe
conlact
amount
between
lrooper's
back and needle ]
Refer
to
standard adjustment.
I
W Thread tension Thread tension Is too weak. Increase tension.
I
11_
Adjustat-.e
,
thread
g1.1ide
I I
low
position of thr8illd guard results I
Lift thread guide position.
J
position In too large needle thread loop
•.
H Threatt guard posillon
Thread guard position Is too high. Refer
10
standard adji.IS!mant.
I
H Nipper J Use of nipper could easily generate J
Do
not
use nipper.
this
trouble.
Looper
thread
cam
thread
I
Drawlng·ln amount of looper thread Is I
Reduce drawlng·ln amount ol thread.
_j
guide position
]too
much.
To
the
neKt
page
Page 57
101
stitch
by
right needle
-
(
-
~
101
stitch
by
middle needle
-
l
~
;::=
~
101
stitch
by
left
needle
(
f-.
-
~
Right needle thread
miss
•
,___,
(
r---
-
Middle needle thread
miss
"
n :::
57
Page 58
•
Troubles(1)
Troubles(2)
Cause (1) Cause (2)
Corrective measures
From the previous page
H~D~o~"~'~"~b~o~o;;diiloogg'''"'""""~rJT-{~T~h~m~o~t
p~I!••~·=====:J---J:R~ot~':i"~"~h~to~"~'~"'~'"~'"~'~oo~t~p~lo~to~l;;-,;;,oo~r---L
Replace
11
with
the
genuine
part.
I I (Middle, Lett) large. Stitch tongue
Is
too
short.
_I
Right needle enters middle
needle loop.
~
Middle needle enter• left
needle
loop.
~
To
lhe
next
page
-j
Needle
-1
Looper
--1 Needle height
-j
Threading
--j
Needle thread tension
---j Adjustatle
thread
guide
I
1 position
---1
Nipper
l(\)JC
.£('
R Length ol stitch tongue
Worn out needle point, needle
bent,
I
wrong
needle
Replace needle with naw one, Use UY121GJS 1
CS100,
UY12BGBS
FSJOO.
I
I
Fiaw
in
looper's body section, r-----1 Replaca tho looper
when
modified or its shape
Is
I
incorrect polishing I
'::;'":'~"='~'d=.too~m="~':"·';:::::::::=======~
I
Needle bar position
Is
too low.
Reier
to
standard
adjustment
I
tnoorrectthreading Reier
to
threading diagram.
I
Tension is
too
weak. Increase tension.
I
Thread guide position
is
too
low. Ult the thread.
I
Use
ol
nipper is likely
to
generate this
I trouble. I
Do not use nipper.
I
Page 59
•
Troubles(1) Troubles(2)
Cause (1) Cause (2)
Corrective measures
From the previous page
~~~~~~~~~~~~==~~~~~~~~~~~~~~t==~~~~~~~~~~~~~~~~~~~
l
lrregular slilches
J--
rl
Throat plate
----1
Incorrect polishing Polish correctly. I
u:l'c'c"c·
c"o"o'o''c·
c"'''c""J
__
_JI
H Spreader adjustment Stroke of spreader is
too
large. Refer
to
standard adjustment.
H Looper
lWorn
out
looper's pointed end and I IAeplace the looper when modified
or
l!s
shape Is I
Incorrect
polishing
chemged
too
much.
I
1
HI-tensed
seam
To
the
nellt
page
H
Top
covering
thread
take-up
Drawing-in amount of top covering
1
thread
Is
too
much. 1
H Needle thread tension
r------1
Needle !hread tension
is
loo
weak.
H Threading
H Top covering thread tension
looper
thread cam thread
guide
position
Throat plate
H Needle
lncorrec11hreading
Thread lension is
loo
weak.
Drawing-in
amounl of looper lhread
is
r
100
much.
Incorrect
polishing,
Too
long
stllch
longue
Worn out needle point, needl&
bent,
wrong needle
H Looper
t---------1
Worn
out
looper's
polnled
end,_
....
I Incorrect polishing
H Needle helghl
1--
Threading
H Needle thread tension
--j
Adjustalje
thread
guide
I
I position
--j
looper
thread tension
looper
thread
cam
thread
I
guide position
Needle
bar
position
Is
too low.
lncorrecl threading
Tension Is too weak.
Thread guide position
Is too low.
Tension
Is too strong.
Ore.wlng·ln amount
ollooper
thread
is
I too lillie.
Refer to standard
adjustment
Increase lension.
Refer
lo
lhreading diagram.
Increase tension.
---1
Reduce drawing-In amounl
of
thread.
Correcl
or
replace
part
I
I
I
I
I
I
Replace
needle
with
new
one,
Use
UY121GJS
I
CSIOO,
UY128GBS
FS300. I
Replace !he
looper
When
modified
or
Its shape
is
I
chenged too much. I
Refer to standard
adjustment
I
Refer
to
threading diagram.
Increase tension.
Ufl
the position
I
Reduce tension.
I
Increase drawlf!Q·In amount
of
lhread.
I
Page 60
"'
0
•
Troubles(l) Troubles(2) Cause (1) Cause (2)
Corrective measures
From the previous
page
H~l
~~~~•29~"~''~':;:'';U~Ic~h;;,;;,;t,,;;-;,;;,;;,~
~-~{~SEP'~'~'~'~'~'
=======f----j~F~Io~w:,:io;:<p~o~io~l~o~d~o~o:d~o~I~'!P~'~'~'~';'~'
1~
Replace
when
modified
or
its
shape
is
changed
too
I
I I covering stitches obstrucls smooth thread threading.
IL:'m:":'""c·
_______________
j
Bulge
To
the next
page
H Spreader adjustment
H Thread guide
H
Top
covering
thread
take-up
c-1
Needle thread hmsion
I
"'=+=
Flaw
Spreader stroke Is
too
large.
Flaw,
burr
in
slot
Refer to standard adjustment.
Replace
when
modified or its
shape
is
changed
too
I
j
much.
Drawing-in amount of top covering
j
thread
Is
too
much
or
too
JitUe.
· I
Refer
to
stand!ud
adjustment
I
Needle thread tension
is
too weak.
f---1
Increase tension.
1--l
Threading
f---1
Incorrect lhreading
1--1
Refer to threading diagram,
r-{
Top covering thread tension
f
t----1
looper
thread
cam
thread
J
I I guide position
y Stitch tongue
or
presser fool
Throat plata
---1
Threading
---j
Needle thread tension
---j
looper
thread tension
looper
thread
cam
thread
I
guide position
1st thread tension is too weak.
!
Drawing-in amount of looper thread
Is
I
too much.
Thread
threading
is
not smooth
due
j
to
incorrect shape
of
stitch tongue. I
Stllch tongue
Is
too short.
Incorrect threading
Tension
Is too strong.
Tension
Is
too strong.
!
Drawing· In
amount
of
upper
thread
is
too tittle.
Increase tension.
Reduce drawing-In
amount
of thread.
I
!
Replace
when
modified
or
Its shape
Is
changed too j
much. . I
Usa
throat plate provided with tong slltch tongue. 1
Refer
to
threading diagram.
Reduce tension.
Reduce tension.
Increase drawing-in
amount
I
I
I
I
Page 61
•
Troubles(1) Troubles{2) Cause (1) Cause (2)
Corrective measures
From the previous page
Detective chain-oil thread
Throat plate
l Thread threading Is not smooth due Replace
when
polished or its shape
Is
changed too I
(with
top covering stitch)
to
incorrect polishing
in
stitch tongue.
much.
H Spreader adjustment
Stitch skip
in
top covmlng stllch due
I
to
Incorrect adjustment
Refer to
standard adjustment.
I
H
looper
adjustment
1---
Stitch
skip
due to incorrect adtustment
r--;
Reier
to
standard adjustment
I
H Top covering thread take-up Drawing-in amount
of
lop covering r
I thread
is
too much or
too
littla.
Refer to standard adjustment.
I
H Needle thread tension
Needle thread tension
is
too weak.
Increase tension.
I
H Threading
Incorrect threading
Reier to threading diagram.
I
1-1
Top covering thread tension
t stthread
tension is too weak.
Increase tension.
I
-
S1itch
tongtJe
ot presser
loot~
Thread threading is not smooth due
Replace when its shape is modified or changed
too.l
to
Incorrect shape of stitch tongue. J
I much.
~
Needle
Worn out
needle
point
needle
bent,
wrong needle . I
Replace
needle
with
new
one,
Use
'UYI2tGJS
I
I CS100, UY128GBS FS300. .
Feed dog
Flaw on surface In feed dog Modify
or
replace.
I
1-
Stitch skip & stitch missing at
>---
rl
Double cutting
Remaining
thread
Is
too
shorl
by_
Refer
to
standard adjustment.
start
of
sewing
alter
thread
I double cutting. . I
trimming
(thread
trimmer
sawing
machine.
boltom
H Looper thread clamp
Clamping
force Is too weak. Increase clamping force.
I
covering smch)
H Pulting..jn of thread
Pulling-In
amount of thread Is too little I
Increase pu!llng-in amount.
at
lima of thread trimming.
H Mechanical wiper Clamping force
Is
too
weak. Increase clamping force.
H Pneumatic wiper
Needle Is entangled with
thread
bY
Correct direction so that remaining thread flows
to
I
ltncorrect
direction of air blow ouHet.
presser bar
side.
Presser loot
~
FaDing
speed of presser Is too stow In
automatic
Utter.
l
Increase
falling
speed.
(to
get
rid
ol
shaky
I
I movement etc.)
'
To
the next page
Page 62
Troubles(1)
~
D_erective
thread I
tnmmer
•
Troubles(2)
Cause (1)
Cause (2)
Corrective measures
From the previous page
til
~r!:,
0
,',c,c,c"c;,cgclohc,.c,c,c,c.,,cm=p-.r----!
Clamping
force
Is
too
weak.
~
Increase clamping Ioree.
I Unable
to
trim
needle
thread.
I
looper thread
Unable
to
trim top
covering
thread I
Pulling-in
of
covering
thread
Pulling-in amount of covering thread Increase pulling·ln amount
Is too little
at
lime of thread trimming.
I
Returning
position
ol
movable
~
Insufficient relurnlng amount of
Refer to standard adjustment.
~nile
movable
knife disables engagement
with stationary knife.
H Stationary knife
Worn
out
edge,
nicked
edge
disables
sharp cutting. I
Sharpen
or
replace edge.
H Timing of thread trimming
-
lncorrecllooper
stopping position Refer
to
standard
adjustment
H Movable knile stroke Inappropriate stroke
Refer to standard adjustment.
~~
Clearance between movable
~
Incorrect posillon, tront and rear,
of
Refer to standard adjustment.
knife and looper
movable
knife
against
looper's
backposition
Engaging pressure (Movable Engaging pressure is too weak. Refer to standard
adjustment
and
stationary knife)
Intermediate
thread
guide
l position
Thread guide position is too
tow-.
lilt the position.
H Stationary knife Worn
out
edge, nicked edge disables I Sharpen
or
replace edge.
sharp cutt!ng.
f--1
Initial position I
Incorrect
posiUon
of
knife
against
I
Refer to standard adjustment.
spreader
I
I
I
I
I
I
I
I
I
--t
Spreader stopping position Incorrect
spreader
stopping position \
I Make adjustment so that sewing machine Is brought..J
(Sewing machine
Is
at
rest)
to.
rest
at
the tpp deed point
of
needle bar.
Engagement
between
lnsufflc!ent engaging amount disables I
Reier
to
standard adjustment.
I
movable
and
stetlonary
cutting
of
thread.
knives
~
Opening amount
of
movable
lnsufliclenl
opening
amount
of
Refer to standard
adjustment
knife
movable
knife
disables
catch
of
thread.
--1 Clamping pressure
Clamping
pr&ssure
Is
too week.
j-
-j_
Refer
to
standard adjustment.
I
Page 63
NOTES
•
Page 64
•
WORLDWIDE
SALES
AND
SERVICE
Union Special Corporation maintains soles
and
service facilities
throughout
the
world.
These
offices will
old
you in
the
selection
of
the
right sewing
equipment
for your particular
operation.
Union
Special Corporation representatives
and
service technicians are
factory
trained
and
ore
able
to
serve
your
needs
promptly
and
efficiently. Whatever your location. there
is
a qualified represen-
tative
to
serve you.
Corporate Office:
European
DistJibution
Center:
One
Union Special Plaza
Huntley,
IL
60142
Phone: 847•669•5101
Fax:
847•669•4454
Union Special
GmbH
Raiffeisenstrasse 3
D-71696
M6glingen,
Ger-
many
Tel:
49•07141•247•0
Fax:
49•07141•247•100
Union
Special
unterh61t
Verkaufs-
und Kundendienst-Niederlassungen
in
der
gonzen Welt.
Diese
helfen Ihnen in
der
Auswohl
der
richtegen Moschine
fUr
lhren speziellen Bedorf. Union Special Vertreter
und
Kundeniensttechniker
sind
in
unseren Werken ousgebildetworden.
um
Sie
schnell
und
fochmOnnisch
zu
bedienen.
Finest
Quality
Brussels,
Belgium
Charlotte.
N.C.
Hong
Kong,
China
Huntley.
IL
Leicester. England
Lille, France
Miami,
FL
Milan, ttaly
M6glingen,
Germany
Montreal.
Quebec
Osaka,
Japan
Santa
Fe
Springs,
CA
Suwanee,
GA
Wayne.
NJ
Other
Representatives
throughout
all
parts
of
the
world.
Weitere Vertretungen in allen T ellen
der
Welt. '
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