Union Special FS300, CS100 User Manual

Finest Quality

2-3

•

NEEDLE

ENGINEER'S

FLAT

BED

FS300

CYLINDER

CS100

COVERSEAM

SERIES

BED

COVERSEAM

SERIES

MANUAL

MACHINE

EN9424

REV. 03/19/99

PREFACE

This Engineer's Manual the machine. This manual describes important information which are

is

advisable to use the relevant Instruction Manual and Parts List together with this Engineer's Manual when carrying

It out

the

maintenance This manual gives the the latter page

the

is

written

"Standard Adjustment", "Adjustment Proceduresft,

oi

these

"Standard adjustment" on the former page under which the most basic adjustment value and on

"Results

tor

the technical personnel

not

covered

machines.

of

improper adjustment" under which errors and troubles arise .

by

the

Instruction Manual.

who

are responsible

for

~Results

of

the service and maintenance

lmproperAdjustment~,

and other

of

•

CONTENTS

1.

SPECIFICATIONS

MOTOR

2.

3.

MODEL

STANDARD

4.

{l)FS300 ...................................................................................................................................................................................................

<2>CS100 .................................................................................................................................................................................................. 28

4.

OlHER

(1)

5.

TROUBLES

PULLEY

NUMBERING

ADJUSTMENT

1)

NEEDlE

2)ADJUSTING

2)'SVNCHRONIZATJON

3)

4)HEIGHTOFTHENEEDLEBAR

S)

6)ADJUSTINGAMOUNTOFTHELOOPER-AVOID ...............................................................................................................................

7)

8)

9)

10) II)

12)

13)

14)

1)

2)

3)

4)

5)

6)

7)

8)

9)

10)

11)

12)

13)

14)

15)

FEED

RETURNING Cl£ARANCE POSmONOFTHENEEDLEGUARD

POSITION SPREADER LOOPER POSITION

POStnON POSlJION POSinONOFTHETHREADGUIDE

NEEDLE

FEED ADJUSTING 'SNYCHRONIZING RETURNING HBGHT

OF POSmON CLEARANCE ADJUSDNG POSmON SPREADER

LOOPERTHREADCAM LOOPER POSITION POSITION POSITION POSITION

PRECAUTIONS

POINTS

TO

AND

...•.............•••......•....•.•.•••..........•..........•...••.•••......••••.•••••••••••••••••••••.•••••••••••.••••.•••••••••••••••..•••••.

AND

BELT

.••••••••.••...•.•••••.•••..........•..•.••.......•

SYSTEM

............................................................................................................................ 6

; .............................................................................. 5

.•••••••...••••••.....••..•••••••••••••.••••...••.•••....•.•••....•.........••..•..........•.•....••••••......•.•...•....•......•

TIMING

THE AMOUNT

BETWEEN

OF

......................................................................................................................................................................................... 20

THREAD

OF OFTHENEEDLETHREAD AND

TIMING

THE AMOUNT OF

THE

OF

BETWEEN

AMOUNT

OF

......................................................................................................................................................................................... 40

THREAD

OF

AND OF

.......................................................................................................................................................................

TIMING

RELATION

.........................................................................................................................................................................

OF

THE

FEED

DOG ...........................................................................................................................................................

CAM .................................................................................................................................................................... 22

THE

PRESSER

HEIGHT

OF

.......................................................................................................................................................................

TIMING

OF

LOOPER

NEEDLE

THE

THE THE

HEIGHT

THE

BAR

NEEDLE

GUARD

THE

OF

THE

FEED

DOG ...........................................................................................................................................................

....................................................................................................................................................................

WRAP-UP

PRESSER NEEDLE

THREAD

OF

THREAD

BETWEEN

LOOPER

............................................................................................................................................................

LOOPER

BAR

THE

LOOPER

BAR

GUIDE

AND

...................................................................................................................................................

....................................................................................................................................................... 22

TENSION

PRESSER

....................................................................................................................................................

THE

NEEDLE

AND

NEEDLE

LOOPER

............................................................................................................................................................

................................................................................................................................................... 34

AND

LOOPER-AVOID

PREVENTING

....................................................................................................................................................... 44

TENSION

THE

PRESSER

....................................................................................................................................................

tHE

NEEDLE

BAR

AND

LOOPER

............................................................................................................................................

NEEDLE

FOOT

BAR

MOTIONS

................................................................................................................................................ 32

NEEDLE

CAM .............................................................................................................................. 42

FOOT

..........................................................................................................................

RELEASE

AND

RELEASE

(WITHOUT

............................................................................................................................... 24

LOOPER(SYNCHRONIZATION)

....................................................................................................................... 30

..........................................................................................................................

............................................................................................................ : .................. 36

(WITHOUT

...............................................................................................................................

THREAD

(SYNCHRONIZATION)

TRIMMER)

.....................................................................

....................................................................... 28

..................................................................... 44

.................•.••.................••....

...................................................................................................................................... 47

WHICH

LOCKTTTE

CORRECTIVE

IS

APPLIED

MEASURES

.............................................................................................................................................

....................................................................................................... 49

4

10

10 10 12 14 14 16

16 16

18

24

28

34

36

38

42

44 46

47

•

3

1.

SPECIFICATIONS

FS300 Series

FS322

Sewing

Stitch length

No. Needle gauge Top covering

Oiff.

Needle Presserfoot lift Lubricating oil UNION SPECIAL Designated oil (Part No. 28604R)

CS1

Sewing Stitch No. Needle gauge 3.2,

Top

Diff. Needle UY12t GJS #55/022 to #90/036 Presserfoot lift

Lubricatina

speed

~

of

needle

feed

ratio Gathering stitch 1

00

Series

speed

~

lenQth

of needle 2 3

covering

feed

ratio

With Puller

With Puller 6000 R.P.M. 6,500 S.P.M. {Max) Undertrimmer 5500 R.P.M.

6000

2

3.2,

4.0 5.6, 6.4, 4.8 3.2, 4.0

Without

CS122

4.0, 4.8 5.6, 6.4 3.2, 4.0, 4.8 5.6, 6.4

Without With

Gathering stitch 1

oil

I

R.P

.M.

I

UNION SPECIAL Designated

FS322

6,500 S.P.M.

3 2

:1.5

UY128GBS

CS122

:1.5

I

(Max) left

1.6to

or

2.8 mm

#65/025 to 90/036

B.Omm

I

1.6to3.2mm

B.Omm

FS332

right hand undertrimmer 5500

With

Stretching stitch 1

CS132

2

Stretching stitch 1 :0.6

oii(PM

No. 28604R)

I

4.8, 5.6, 6.4

I

FS332

3

:0.6

CS132

3

'*

Depending

•

on

Devices

4

2. MOTOR PULLEY AND

FS300 Series

BELT

Sewing speed {s.p.m.)

6,500

6,000

5,500 110 35 90

5,000

4,500 90 34 75 34

4,000

3,500 70 34 60 33

1) Use a UNION SPECIAL clutch

2) Use

3)

4) Note that the effective diameter

CS100

an

M type V belt.

The table shows the sewing speeds obtained with different lengths.

Series

50

Motor pulley

outer dia. (mm)

140 35 125

100

80

motor

{400W).

of

the pulley

Hz

V belt (inch)

Fully-

s!bmerged

type type type

.

Semi-

submerged

so

Hz

Motor

pulley

Fully-

outer dia. (mm) submerged

120 35

I

35

105

34 85 34

34 70 34

by

the use

of

the machine head

of

motor

pulleys with different diameters and V belts

i~

54mn

V belt (inch)

Semi-

submerged

type

35

34

50

Hz

Motor pulley v belt (inch)

Sewing speed (s.p.m.)

outer dia. (mm)

6,500 145 43

6,000 5,500

•

5,000

4,500

4.000 3,500

1)

Use a

UNION

2)

Use

an

3)

The table shows the sewing speeds obtained with different lengths.

4) Note that the effective diameter of the pulley

SPECIAL clutch

M type V belt.

135 120 110

95 85 75

motor

Fully- Semi-

submerged

type type type

submerged

40

43 40 110

I I I

I

(400W).

41 41 41 39 39

by

the use of

of

the machine head is 57.5 mm.

38 100

38 38 80 37 70

37

motor

Motor pulley V bell

outer dia. (mm)

120

90

60

pulleys with different diameters and V belts

60Hz

. Fully- Semi-

subrre'lJE'f

41 41 41 39 39 37 39 37

38

(inch)

submerged

type

38

38 37

35

5

3. MODEL NUMBERING SYSTEM

•

CS100 SERIES ORDERING INFORMATION

Stitch type Sub-class

2 = Bot!om coverslitch

3 =Top & bottom coverstitch

Basic

frame style

CS

= Cylinder

FS

=Flat

bed

I I

(describes typical application)

c· = Col!arette

E'

=Elastic 48 = 4.8

H":

Hemming

K'

= Coverseam

L •

=lap

U'

= Universal

'00·99

" Variety

FS332C01-3D56/TC4/

l

Generation Feed type

1 =First 2 = Dlflerential

2 =Second 5 = Differential & puller

=Third

3

seam

ol

sub-class

Number

2

3 "' Three needle machine

~

Stllch tongue

Represents stitc-h

tongue.

A = For short stitch length B =

For

C =

For

0

=

For coverseam & elastic applications

of

"'

Two

needle machine

l

I

the

shape

medium long stitch length all

stitch lengths, collaretle,

needles Needle

32"'

40=4.0mm

56"'

60=6.0mm

64

= 6.4

of

the

throat plate

A

c;:=-

stitc-h

length

Bt:='"

c c::::7'"

D='"

spacing

3.2

mm

5.6

mm

I

Devices

CC'

= Chain cutter

MD'

= Metering device

TC'

"'Tape

TF'

= Binding feed device

UT" = Thread trimmer

'1-9

= Variety

I

culler

or

devices

•

CS100 SERIES ORDERING INFORMATION

SUtch

type

2 = Bottom coverstitch (describes typical application) 2

3

=Top

& boHom coverstitch

Basic

frame style

CS

= Cylinder bed

FS

=Flat

bed

I

Sob-class

C' = Co1larette

E'

=Elastic

H'

=Hemming

K'

= Coverseam

L'

=Lap

seam 64 = 6.4 mm

U'

=Universal

=Variety

'00-99

I

or

sub-class

I

l

CS132H01-2C32/UT2/

Generation Feed type

1

=First

=Second

2

3

=Third

2 = Differential 5 = Differential & puller stitch tongue.

Stitch

Represents the shape

A

"'

For short slilch length

8

"'

For medium stitch length

C

""

For long stitch length

D = For all stitch lengths, collarelle,

coverseam & elastic applications

Number

3 = Three needle machine

of

=Two

needle machine

needles

.

~I

tongue

of

the throat plate

Needle

spacing

32"'

3.2

mm

40=

4.0 mm

48·,

4.8 mm

56=

5.6 mm

60=6.0mm

I

A~

Be?"

c

=""

D

t:::7

I

Devices

cc·

"' Chain culler

MD'=

Metering device

TC'

=Tape

culler

TF'

= Binding feed device

UT"

= Thread trimmer

'1·9

= Variety of devices

I

FS300

Series

Code

C01 E12 For elastic tape attaching Right hand fabric under trimmer and metering device (Upper side) E41 H01

L01 L21

C$100

Series

Code Soecification Description of Sub-Class

E11 E12 For elastic tape attaching Fabric under trimmer, H01 H11 H21 K01 K02 Covering With adjustable seam guide for medium to heavy-weight fabrics K11

Specification

For Cellarette Basic style

For

elastic taoe attaching Elastic tape attaching with puller

For

hemming Basic style with hem guide

For

lap seam Basic style

For

l_ap_

seam For the top sleeve of

For Elastic tape attaching Right hand fabric

For Hemming Basic style with hem guide For Hemming With cloth puller

For

Hemming Lett hand fabric under trimmer

Covering With standard fixed seam guide, light weight fabric

Coverseaming With special fold over seam guide

knit

under

trimmer, (Preclosed Elastic)

and

Description of Sub-Class

and

metering device (Lower side) (with endless rubber)

fabric

metering device (Upper side)

-

•

8

Under-bed thread

trimming

device

For

Code

UT1 UT2 UT3 CS122 UT4 CS122 UTS

UT10 FS322 UT11 FS332 UT12 UT13

Elastic tape metering

Code

MD1 MD2 Metering device (upper side) MD3 MD4

use on model

CS122 C$132

C$132

FS322 F$332

device

Metering device (upper side) Electric single stage

Metering device Metering device (lower side) Electric

(lower side) Electric single stage FS322, FS332, C$122, CS132

Electromagnetic type

Thread trimmer

Needle thread

wiper

Top

covering thread

trimmer

0 0

0

0 0 0

Description

Electric

two

Auto-lifter

0 0

0

stage

Pneumatic

Needle Needle

_,

Thread

trimmer

•~o

(Mecha- (Pneu- nieal) matie)

0 0 0 0 0

0 0 0

For FS322, FS332, CS122, F$322,

FS322, FS332, C$122,

F$332,

type

•~o

wiper

Top

covering thread trimmer

use on model

CS122,

•

Auto-lifter

0 0

0

C$132

CS13~

C$132

0 0

0

Automatic tape feeding

Code

TF1 TF2

Under-bed thread

•

Code

CC1

Cloth

Code

PL1

I

Automatic Automatic tape feeding device (lower side)

Pneumatic

puller

Cloth puller

device

Description

tape feeding device (upper side)

trimming

type

device

chain-off

Description

thread

cutter l Mounted

Description

horizontal

venturi

suction

For

use on model

For

MD1,

MD2

ForMD3,

FS322,FS332

FS322, FS332, CS122, CS132

M04

For

use on model

For

use on model

>

9

4. STANDARD ADJUSTMENT

(1) FS300

Standard Adjustment

1) Needle feed timing

First screw straight

(A)

in

operating direction on double eccentric

up,

when the needle bar is at bottom of stroke.

(B)

of feed drive assembly must

r--

I~

i\

B

A-

'

il

-

2)

Adjusting the timing relation between the needle bar and looper (synchronization): Without gauges

/

~

1---

1--B

f--A

0

.

be

When the blade point

front of

looper

looper,

•

the

needle, align the upper end of the eyelet of the left needle with the lower

so

that the distance between A and

should

be

of

the looper moves

equal.

to

the left

B.

the side of the left needle to the blade point of the

A=B

in

the rear of the needle

and

to

th_e

face

right

of the

in

4J'

A

'¢:J

/ca:::

I

Allgn~L

Looper

Left

needle

Mov:e

to the left

B

Vca=

v

tl--

Looper

Left needle

¢Move

to

the

.

right

.

.0.

10

Adjustment Procedures

Remove

Loosen screws (C) of sprocket (D).

• Rotate lower

first screw (A) on double eccentric (B) is straight up.

•

Holding main

•

Torque

•

Replace

Note:

• Turn handwheel in operating direction until bottom

even with tap of needle eye. Note dimension (A)

Continue looper needle.

•

If

-loosen

-Turn sprocket

-Tighten

-Repeat If

•

-loosen

-Turn sprocket

-Tighten screws

-Repeat sbove

top

cover,

main

pulley

shaft

Earlier machines

is

(A)

is

(A)

less than

to

until

needles

screw

(C)

top

cover,

turning

even

w~h

Note dimension (8)

greater than (8)

(C)

on sprocket

(D)

screws

above

(B)

screws

(D)

two

oil

reservoir cover, gasket

shaft

in

operating direction clockwise, until

prevent

to

handwheel

(C)

two steps until (A)"' (8)

(C)

it

from turning,

are

at

top of their

45-46

in.

lbs. (5.2-5.4Nm).

oil

resevoir

have

top of needle

in

operating direction

on

in

reverse direction

s1eps

cover,

(4)

screws.

in

operating direction until bottom

sye

(D).

sprocket

(D)

until (A)"'

gasket

when

(B)

rotate

stroke.

looper

and

cloth plate.

handwheel

and

cloth

of

is

of

plate.

looper is

in

front

the

upper

of

Results

• Needle breakage

• Looper missing needle thread

•

of

If

the timing

may

occur.

of

Improper Adjustment

is

not correct, skip

st~ching

11

FS300

2)' Synchronization

• Rotate handwheel

• Reposition needle bar as required to set pointer

• Rotate handwheel in reverse direction until

• A variation

of

in

operating direction until

(1) graduation

on

scale is permissible .

Standard Adjustment

in

looper holder contacts gauge plate.

of

indicator

in looper holder again makes contact with gauge plate.

gauge

at

"0~.

•

12

Adjustment Procedures

Results of Improper Adjustment

o Rotate handwheel in operating direction until pin (9 contacts

gauge plate

o Loosen screw (!) in needle bar connection & position needle

bar

8 as required

~a~

tighten screw (!)lightly.

o Rotate handwheel

contact with gauge plate

Note reading on gauge. A variation of

is permissible.

To adjust:

o Loosen screws o If reading is above o

If reading is below "0" tum sprocket away from operator.

o snug screws o

Continue

directions until pointer 0 of indicator gauge

(1) graduation

direction. o Tighten screws o Torque needle bar screw

to

e .

to

set pointer 0 of indicator gauge 0 at

in

reverse direction until pin 8 makes

0 .

0

on

looper drive sprocket

~a"

tum sprocket towards operator.

0 .

check

& adjust in both operating & reverse·

on

scale when turning handwheel

0.

(9

to 20 inllbs.

(1)

graduation

€t

on

.

4D

comes within

in

scale

either

CD

o Skipped stitches o

Improper chaining

•

13

FS300

3) Returning

When the looper is

center of the right needle is 4.4 ±

amount

of

the

in

the extreme right position,

looper

0.1

Standard

mm.

}

Adjustment

the

/Right

V Looper

c=

-+-+---

4.4 ± 0.1

distance between the blade point

needle

I

mm

of

the looper and the

•

4) Height

of

the

needle

When the looper moves needle

needle .

by 0.7 to 1.0 mm, the lower face of the looper aligns with the upper end

bar

to

the left and the blade point of the looper comes out from the left side of the left

of

the eyelet

c

-I"'-J-0.7to

I/

1.0

Looper

mm

~of---

Align/

Lett

needle

of

the left

14

Adjustment

Procedures

Results

of

Improper

Adjustment

o Loosen the looper base setscrew

amount of the

(Use

a 5/32

lOoper.

inch

hexagonal wrench.)

0 and adjust the returning

o If the returning amount is large,

skipping stitch and

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

occur.

may

tangling stitch

o Loosen the needle bar holder screw 0

of

the needle bar.

(Caution)

After

the adjustment,

the

needle needles enter the center plate.

clamp

check

is

correct

•

0

@

0 0

0

0 0

\\

0

of

that

the

and

adjust the height

the

direction

and

the

respective

holes

of

the

mill

of

throat

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.

If

defective stitch occurs with the

o

wooly

distance C as small as possible.

nylon thread,

make

the

15

FS300

5) Clearance between

Clearance between the (Clearance

Otoo.os

Top end

6)

Adjusting

When the needle descends, the top point from the

of

mm

of

amount

upper

the

looper

blade

point

the

middle needle becomes larger a liHie.)

VRight

looper

of

the looper-avoid

side

of

the looper.

and

Needle

Standard

needle

of

the looper

needle

of

desce:tlr

Adjustment

and

the grooves

Oto0.05mm4

the needle touches the

~

i

>13

of

the rightlleft needles is 0 to 0.05 mm.

Looper

j

===;~/~::::-;;::::~;.

;;;;

j

0

Needle

back

of

the looper

at

the position of

213

Back

of

looper

7) Position

<D

Rear

•

of

the needle

needle

o

The of

o The longitudinal position

side of the respective the rear

height

the

guard

of

needle

guard

the rear needle guard is in the position

when

the

needles comes to the blade top

guard.

looper

and

moves

inclination

to the left as shown in the figure.

of

the rear needle guard are in the position that

t

113

that

the rear needle guard is 1.2

of

the looper, the top

of

mm

above the top

when

the

needle slightly touches

the right

<?

~

!.:.;

guard Slightly

==~t.2mm

touch

® Moving needle guard

o When

the

0.13mm.

looper

advances, the clearance between the needle

and

the moving needle

guard

is

0.05 to

==J~;;:~=t

16

0.05to0.13mm

Adjustment

Procedures

Results

of

Improper

Adjustment

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

o Amount

direction

(Caution)

of+.

of

the avoid reduces

of-.

After

the

adjustment, check clearance blade groove

again

between

point

of

the needle.

and

in

the

the the

the

o

If

the clearance is too large, the loop

of the needle thread is not scooped

back

of

the

and the

strongly the top point of the needle

which causes the damage

the

point clearance

otthe

tip

.

of

and

skipping

will occur.

needle

o

If

skipping stitch will· occur due to the damage needle breakage, and the large clearance between the back

looper and the needle.

o If the amount

the clearance looper and the needle becomes large, tangling stitch

looper

is

too

of

the looper, the

the avoid is large,

the

back

stitch

hits

of

the

small,

ot

the

of

the

and

o If the amount of the avoid is small,

the needle hits strongly the back of the looper. This causes the damage of the

breakage and the damage on the back

needle

of

the looper.

point,

the needle

o Loosen the

height and inclination of the needle guard

G'!>

and

•

position

0.

(Caution)

o Loosen the screw

clearance between the moving

needle guard

(Caution)

screwO

0.

adjust

of

the rear needle guard

Check needle break needle touching the needle.

Check never the

moving and rear needle any case.

and adjust the-

Loosen the screw

the

longitudinal

that

the

guard

the

fD

that

caught

does

loop

thread

the

groove

Gt

and

adjust the

and the needle.

the needle

between

needle guard

r~ar

rear

not

of

the

guard

by

of

is

in

If

the returning

o

skipping stitch and tangling stitch occur, thickness reduced .

and

o If the returning

skipping stitch and tangling stitch occur.

amount

the

of

the cloth to be sewn is

amount

range

is large,

of

is small,

the

17

FS300

Standard Adjustment

8} Position

of

the

feed

dog

o

The

clearance of the left/right sides of the feed

At

the maximum travel, the clearance of the main feed dog and differential feed

o

dog

:8'.

o The height of the teed dog is 1.0 mm at the top of their stroke.

tilt of the feed dog is parallel

o The

to

the throat plate when the needle bar is at the highest position.

1.0mm

should

be

equal

in

the slots

of

the throat plate.

dog

is equal to

A=

A', 8

•

18

Adjustment

Procedures

Results

of

Improper

Adjustment

Open the cover located at the rear side of the needle entry.

o Adjust

o Adjust the longitudinal position of the differential feed dog

the

longitudinal position of the main feed dog after

loosening the

after loosening the nut

nut@) and rotating the eccentric nut

Q)

and rotating the eccentric nut

ID.

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 If the letvright positions of the feed

dog are and the throat plate

o Heating and abnormal noise will

produced.

o The feed components

early. And, and produced.

o If the inclination

raised toward you, starting workpiece

incorrect,

abnormal

the left/right sides

will wear out.

the looseness, bending

noise

of

the feed dog

will

be

affected.

wiH

be

wear out

will

be

of

the

o If the inclination of the feed dog is

towered toward you, the

irregular

puckering .

it

may

stitching

cause

and

is

•

o Loosen the screw

dog@).

o Loosen the screw

feed dog

@1.

G>

and adjust the height of the main feed

§)

and adjust the height of the differentia!

o

If

the position of the feed dog

it

causes

stitching and defective chain-off.

the

return

is

feed,

o If the main feed dog, differential

dog and throat plate come each

other,

breakage.

o

If the position the

stitch

when the sewing is finished.

it

of

the

length

will

in

cause

fe:ed

dog is low,

becomes

contact

high,

skip

feed

the

short

19

FS300

9)

Spreader

(!)Timing

2.5 ±

0.1

Just

when

highest point of the needle bar, the spreader

begins to return from its extreme left position.

®Position

5.5 ±

0.3

to

0.5

mm

Descend.[!,

Highest

mm

c~~~~~g~~~~

the

of spreader

0.1

mm

~j=ii::;:f~i,~o~o'::;:;/

f

point

.:::0

Return

needle descends 2.5

II

..,.-JIHI

11.5

Left needle

~

:±

0.2

mm

(10.8 ±

plate for 4.8 mm

more

~Return

mm

0.2

needle gauge)

Standard

from

the

mm

throat

or

Adjustment

@Stroke

•..

Direction

o The height is 11.5 ±

gauge).

5.6

mm.

o When the spreader is in the extreme left position,

the distance between the center of the and the top blade of the spreader is

o When the

clearance between the spreader and the left needle

0.3

to

is

0.5 mm.

o1

19±

0.1

mm

(10.8 ± 0.2

and

6.4

mm

spreader

cloth feeding

~ l';"'''

,

~~--.--..~

0.2

mm

for4.8

gauges.

returns

fl..

,,

(4.0 + 3.2

mm,

left needle

5.5

± 0.1

to

the

right,

mm.

the

@Fixing

•

Top between left middle

®Needle

spreader thread guide

Spreader

Extreme

blade

of

the

should

be

side

and

groove.

clamp spreader thread guide

Fixing

thread

right

Show

spreader at extreme when

setting

spreader

guide

right

\

position

height

0.4to

o.a

mm

is in

~he

o When the spreader

the top left side and middle groove.

o The height

spreader.

o When the needle bar is in the lowest position, the

clearance between the needle thread guide and the spreader thread guide is 4.0 ± 0.5 mm.

o The center of the

with the left side of the fixing spreader thread guide groove.

blade of the spreader

is

0.4 to 0.8 mm from the surface

hole of the thread guide aligns

extreme right position,

__

should be between

of·

the spreader thread guide

clamp spreader

upper

face

of

the fixing '

of

the

Needle

clamp

spreader

thread

guide

20

Adjustment

Procedures

Results

of

Improper

Adjustment

o Adjust

eccentric cam

o Adjust the stroke by loosening the nut G

forth.

and to the back

the

timing

@)

and rotate the spreader eccentric cam

If it

is

moved toward you,

it

becomes large.

by

loosening

screw

€!)

of

the

and

move back and

the

stroke becomes small,

spreader

~.

o Adjust the height of the spreader by loosening the screw@)

and moving the spreader 0 up and down.

o Adjust the clearance between

by loosening the and forth.

o Adjust

the

and move the spreader G

screw@)

extreme left position

the

spreader and left needle

and

move the

by

loosening the screw G

to

the left and right.

0 <

spreader 0 back

o If the timing is too advanced,

needle does not catch the covering thread when it descends. This likely to cause the skipping stitch. On

the

contrary, if the timing

retarded,

to break

covering thread is spreader becpmes

o If

the spreader skip stitching

thread.

o If

the set right, of the top covering thread.

; o

If

spreader and needle is small, it will cause large,

the top covering thread.

o If

the spreader uneven stitching of the top c9vering thread. stitching of the top covering thread.

the

right needle is likely

as the resistance when the

pulled from

large~

movement

is

not set right, it will cause

height

it will cause skip stitching

the

clearance

the

needle breakage. If it is

it will cause skip stitching of

protruding

is

If

it

is

amount

of

the top

of the spreader is no!

between

amount

large,

small, it will cause skip

it

will

the

is

too

the

of

the

covering

the

of

the

cause

o Adjust the fixing spreader thread

screw~.

guide~

by loosening the

•

o

Adjust loosening the screw @).

the

needle

clamp

spreader

thread

guide G by

o If the height

thread guide the top covering spun defective looping

other threads are used. If

1he

o

o If the position of the needle clamp

position of the fixed spreader

thread

cause covering thread.

spreader thread guide

it

will cause skip stitching of the top

covering thread.

thread

guide skip

of

the

fixed spreader

is

set as high as

perlonnance by the

is

improved. may

occur when

is

not

correct, it will

stitching

of

the

is

not correct,

0.

8 ,

But,

top

21

FS300

10)

CD

Timing

Looper

Needle

descends

thread

Standard

cam

vthread

Looper

Adjustment

o When the looper thread is pulled from the highest

point of the looper thread cam, the top point left needle aligns with the lower face

,(\

l];aackof

~

Align

face

of

ell

Position of looper thread guide plate and looper thread cam pawl wire

1.6mm

Looper thread

guide plate

looper

with

lower

looper

Tou~a--;::l;===·

looper

Looper

Wire

@

thread

thread cam

Looper

cam

thread cam

====:0~tj

pawl

9.6

o The height

mm from the lowest part

upper part

o

The

mm

o The looper thread cam pawl and wire are to

rear

the wire, and its front side is 9.6 mm above the

upper face

inside.

positioned in the

plate.

of

the looper thread guide plate is 1.6

of

the looper cam

of

the looper thread guide plate.

side of the looper thread

of

the wire at the highest place

center

of

cam

pawl

the

looper thread cam

of

the

the looper.

to

the •

touches

of

the

be

®Position

•

11)

Position

of thread guide and auxiliary thread tension

plate

guide

Auxiliary thread

of

the

presser

bar

o The. position of the

position that the looper thread

the

when

o Adjust

to make as

The

clearance between the presser bar. bracket and

the presser bar bushing

is

under presser foot touches the upper face of the throat plate at the

looper is in the extreme left.

the

tension of

low as the thread is

the

throat plate and the bottom face

time

that

thrE!ad

the

is

the needle

guide is to

auxiliary thread tension

0.8

mm

bar

is

be

set

just

becomes tight

just

stabilized .

when the feed dog

in

the lowest point.

at

of

the

22

Adjustment

Procedures

Results

of

Improper

Adjustment

o Adjust the timing of the looper thread cam

two screws

o Adjust the height of the looper thread guide plate by loosening

the screw

and down. Adjust the looper thread cam pawl by loosening the and move the looper thread cam pawl Adjust the lateral relation of the looper thread guide plate by loosening the screw plate

®to

@I.

E1i)

and move the looper thread guide

ED

and move the looper thread guide

the left and

right

by

loosening the

61

up and down.

plate®

screwS

up

o If

the

timing

of

the looper thread

cam

is

too

advanced, stitching on the back of the looper will occur. tightening inferior.

If

it is too retarded, the

of

the

thread

the

will

skip

be

o If the clearance ·between the looper

thread large, the looper thread suddenly slackens and

back side will occur.

o If

the damaged.

cam

pawl and

_skip

stitching on the

the

looper thread cam is not

center,

the

cam

the

wire

will

is

il'

be

(Caution)

o Adjust the position of the thread guide by loosening the two

screws$

Use a 3132" hexagonal

and move the thread guide

wrench

E@

for

the

(2 pes.)

screw

up

and down.

t!>.

o If

the

thread guide is raised, the looper thread after sewing slack.

will be

o It the thread guide is lowered, the

looper thread

•

o Adjust

by

loosening the two

bar bracket

€i)

up and down.

screws~

and move the presser

tight.

o

If

the presser bar bracket and the presser bar bushing is face

of

contact tightly to the throat plate.

o

If the clearance is large, the lifting amount of the presser foot reduced.

after

clearance

small, the bottom

the

presser

sewing will be

between

toot

can

will be

the

not

23

FS300

Standard Adjustment

12)

Position

When the presser foot is raised by 3 mm, the thread tension opening and when the presser foot is in the highest position, the thread tension disc opens and there is no tension the thread.

of

the

needle

thread

tension

release

(without

thread

trimmer)

pawlet

3mm

touches the thread tension

=~=---'

Throat plate

6)

on

13) Position and height

CD

Adjust the position of the presser foot so that the needles enter the center

presser foot

CV

Adjust the height of the presser foot so that when the needle bar is

does not come out from the lower face of the presser toot.

•

Note:

On

elastic

of

the presser

on

condition that the presser toot is set correct to the presser bar.

foot

Needles

in

its highest point, the needle point

"'"'-'""'lf"'-'""""'"f

Throat

plate

machines

height

is

7.0

nm.

of

the needle entry holes in the

Lower

bushing

Spreader

Max.

8.0

mm

14) Position

<D

Middle thread guide and thread guide holder

ofthe

( Fix at the

thread

guide

extreme

Spun thread Cotton thread Wooly nylon thread Tetoron thread

right

position

of

the

Left needle

thread

27mm 27mm 27mm 27mm

slot. )

24

£

Middle needle Right needle

thread thread

25mm 25mm 23mm 25mm 23mm 25mm 23mm

23mm

Adjustment Procedures

Results of Improper Adjustment

o Adjust

o Adjust the position by loosening the screw

o Adjust the height by loosening the

by

loosening the

E>

presser foot

~

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

collar and the lower bushing is 0.2 mm.

the

Adjust

clearance between the top end

the

lever~

descends and rests tightly on the throat plate.

ii>

to the left and right.

® and

by

fix

loosening the nut

becomes 0.5 mm on condition that the presser toot

screw@.;!

and move the bracket

e

€il

and move

nut®

and rotate the screw

the collar i> so that the clearance between

€!1

and rotate the

of

screw~

the screw ~ and the

so

that

4».

th~

o If the position

not correct, and non-straight sewing. If the height of the presser

o

not correct, of

the spreader, the needle scratch

on

workpiece, defective sewing and

the lack of feeding force.

of

the presser toot is

it

will cause defective

it will cause breakage

loot

is

l!ll

IIL.--i!ll

@:J;:--'--.li""""~""~

o Loosen the

(i)

to the extreme right. Loosen the respective heights adjustment watching the actual stitching.

screw~

and fix the thread guide attaching base

.2

referring to the left table. Make the fine

0.5

mm

screw~

and adjust the

If

it is raised, the needle thread

o

tightened.

If

it is lowered, the needle thread

o

slackens.

o The tightened stitches of the right

needle

simply slackened holder is moved to the left.

and

left

needle

if

the thread guide

can

is

be

25

FS300

Standard Adjusbnent

® Needle

o When

figure

o

If

thread

o

If

touch it.

bar

needle thread release

the

loop

of

the needle thread is not

at

the time

the needle thread is a cotton thread, raise the right needle thread release so that the right needle

only

the needle thread is a spun thread, lower

of

touches

the lowest point of the

Lowest

at

the

time

of

the lowest point

Lowest

_,

_ _;)\

Lowest

easily

formed, raise the needle thread release as shown in the

needle

point

ohN~dle

/

point

the

point

of

bar.

of

needle bar

ba• eyelet

~Needle

of

the needle bar.

of

needle

needle bar

bar

needle thread release

thread release

Right needle thread release

so

that the needle thread does not

-!],

Needle

bar

balance

Needle thread release

•

® Spreader balance thread guide

h should be positioned that

the spreader has moved

when

the

top covering thread does not slacken and the spreader does not pull

to

the extreme left position.

out

the thread,

'

0

/Not

slacken

-K-~

Thread

guide

r

@ Needle thread nipper

All

the

26

through

the

cotton

needle

threads

the

needle thread

and teteron

are

type

to

be

threaded

nipper,

threads.

except

Adjustment Procedures

Resuhs

of

Improper

Adjustment

o Loosen

release

o Loosen

release

screw®

f)

up and down.

screw®

~

and

up and down.

and adjust by moving the needle thread

adjust by moving the right needle thread

o If it is raised, the loop of the needle

thread becomes

o

If

it is lowered,

thread becomes

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

stit(fhing

thread release.

occ~;~rs,

larger~

the

loop of the needle

smalfei::".

is

too large) and the skip

lower the needle

•

o Loosen

up

screw~

and

down.

and adjust by moving the thread guide

1!9

o

lf it is raised, the thread slackens .

If

it is lowered, the thread tightens.

o

o Use of the nipper

the

threads

Not

used

for tetoron thread. Used for wooly nylon thread and spun thread (stretching thread).

depenling

to

be

used

cotton thread and

on

..

27

(2) CS100

Standard Adjustment

1) Needle feed

FiJSt

screw 0

the

needle

bar

timing

in

operating direction

is

at

top

of

stroke.

on

double eccentric

0 0

49

of

feed

0

drive

assembly

must

be

straight

up,

when

2} Adjusting the timing

When

the

blade

the

needle, between and

B .

and

the

left side

point

the

of

the needle bar

of

the

looper

top

end

of

the

left needle

the

moves

hole of

and

looper

to

the

left needle aligns with the

the

(Synchronimtion) :

the

left

in

the

blade point

rear

of

the

of

Withcut

the needle

looper should

lower

and

part of

be

to

the

equal

Gauges

right in

looper,

to

the

front

the

distance

of

A

•

A=B

A

~

Move

to

the

Left

needle

left

Looper

Left needle

¢ Move to the right

28

Adjustment Procedures

Remove

• Loosen screws (C) of sprocket {D).

• Rotate lower main shaft in operating direction clockwise, until the first screw {A) on double eccentric (B)

• Holding pulley to prevent

main shaft

• Torque screw {C) to

Replace top cover, oil resevoir cover, gasket and

Note: Earlier machines have (4) screws.

• Turn handwheel

even

• Continue turning handwheel in operating direction until bottom

looper is even with needle. Note dimension (B)

•

If

--Loosen (C)

-Move

-Tighten

-Repeat

•

• If

-Loosen

-Move

-Tighten

-Repeat

top

cover, oil reservoir cover, gasket and cloth plate.

is straight up.

i1

until needles are at top

in

operating direction until bottom of looper is

wrth top of needle eye. Note dimension {A)

top

(A) is greater than {B)

in

connector (D).

connector {D) away from connector (E)

(C)

above

two

(A)

less than {B)

screw {C) in connector (D)

connector (D) toward

(C)

sbove two steps until

from turning, rotate handwheel of upper

of

their stroke.

45-46

in. lbs. {5.2-5.4Nm).

of

needle sye when looper

steps until

{A)

(E)

(A)=

= (B)

(B)

cloth plate.

is

in front of

Results of Improper Adjustment

• Needle breakage

• Looper missing needle thread

•

If

the timing is not set right, it is likely

occur skipping and tangling stitches.

of

to

)

29

CS100

Standard Adjustment

2)' Synchronizing looper

•

Set

looper

to its extreme right position.

• Rotate handwheel clockwise until looper

•

Set

indicator

• Move

• Continue rotating handwheel counterclockwise until looper

• Indicator point should return to

• Synchronization is correct when looper moves .400 {10 mm)

(Note) Synchronization can drive lever rocker

-{

looper

counterclockwise

.400" t end position

l..--~~~.::~

and

needle motions :

point

to

"OH

on

top

of

needle bar.

to its extreme right position

"0~

in that direction.

and

dial indicator

only

be

obtained

shaft

until synchronization

Looper at extreme right

____

1 I

on

after

With

Gauges

has

moved

by

turning handwheel counterclockwise.

needle

needle/feed timing has

.400"

bar

moves to zero in each direction.

been

obtained.

v---------~

Needles

Fig.1 ClockWise

(10

mm) from right to lett.

has

moved

has

back

been

.400~

set,

(1

0 mm) in that direction.

and forth (clockwise and

and

only

by

moving

looper

.400" t Looper

(

mm) end position

10

at

extreme right

j

~

1.'------~

\!}'----------

Needles

Fig. 2 Counterclockwise

•

9/64allen

"l=

t'

f:J

I

~

-

----

Fig.4

-----

Shorten if needed

•

Fig.3

__:!m'f--

~

0

I L.l

-"

I

'I

10

lid

~

0

o.

01

~~

0

F1g.S

30

Adjustment Procedures

ResuHs

of

Improper Adjustment

o Drain oil.

o Remove o Modify a standard o Flag indicator from TT146 may need to o Remove looper and mount modified

holder.

o With needle bar at bottom dead center adjust

so allen wrench is

o Tum machine

throat plate, assemble indicator

in

o

Tum

throat plate.

(Note)

Reading of indicator. If distance

• Loosen screw 0 (Fig. 7).

• Move drive lever crank

• Retighten screw

• Recheck indicator readings in both rotating directions, until they are the same,

• Torque screws

• If distance is more than

• Loosen screw G (Fig. 7).

• Move drive lever crank

• Retighten screw

• Recheck indicator readings

are the same,

•

• Torque screw 0 to 130

• Replace removed parts.

• Refill with UNION SPECIAL 175 oil. (Part No. 28604A)

oil pan.

9/64" allen wrench (Fig.4).

be shorten (Fig. 5).

allen wrench in looper

looper holder

.400" {10 mm) from throat plate (Fig. 6).

in

opera1ing

(Fig. 3) and set indicator point to

machine in opposite direction until allen wrench contacts

is

less than

direction until allen wrench contacts

to

top of machine

~a~.

4D

away from looper rocker lever

as

shown

0.

+1- 1 mark.

0.

~o·.

4D

towards looper rocker

lever@.

0.

in

both rotate directions. until they

+1-

1. in.

lbs. (15 Nm) .

8.

o Skipped stitches

0

)

31

CS100

3)

Returning amount

of

the

Standard Adjustment

looper

When the looper is center

of

the right needle is 4.8 ±0.1 mm.

at

the extreme right position, the distance between the

}

/Right

needle

V Looper

I

4.8±0.1

mm

blade

point of the looper and the

•

32

Adjustment Procedures

Results

of

Improper Adjustment

o Adjust the returning amount

binder screw e. skipping stitch and tangling stitch will

4.8±0,,

by

loosening the looper holder

mm

If

the

returning

occur.

And

the

to be sewn will be reduced.

It

the

returning

skipping stitch and tangling stitch will

occur.

amount

thickness of the material

amount

is

'\

~

16\

~

e

large,

small,

•

'

33

CS100

4)

Height

of

the

needle

When the looper moves by

1.0

±0.3

mm, the

Standard

bar

to

the left and the point

lower

part of the looper aligns with the top end

c

-r::-t-

II

Adjustment

of

the looper comes out from the lett side of the left needle

1.0

±0.3 mm

V

en:=

Looper

h

Left

¢:J

needle

of

Move

the hole

to

the

left

of

the lett needle.

5)

Position

Q)

of

the

needle

The

height

of

height

of

the contact surface of the rear needle guard when the blade point

right side

The pushing amount is 0 to

(The blade point

of

guard

the

rear needle guard is adjusted so that

the right needle.

of

the looper should not contact the respective grooves

0.1

mm

to

all needles.

Align

the

poin1

of

the

right needle comes to

of

the looper aligns with the

of

the all needles.)

the

1/2

•

I

J-o·~_:~::::~~~~~~:

....,,

® The height

The

face

2.0 ±0.1 mm

Contact surface

rear needle guard

of

the front needle guard

of

the

guard position is parallel to all needles having a clearance of 0.25 ±0.1 mm.

Looper

of

is

2.0 ±0.1 mm from the lower part

Pushing Oto0.1mm

0.25±0.1

:f:=;:;;;=;~~

[;l:V

r--

Front needle guard

amount

1

mm

_D

'I~

of

Needle

ph;

the looper.

6 0

Front

guard

needle

34

Adjustment

Procedures

Results

of

Improper

Adjustment

o Loosen the screw 0 of the needle bar binder bracket inside

the face cover and adjust the height

(Caution)

After

the adjustment, the needle head needles enter plate.

@

0

the

0

is

center

\\

right

check

and

of

0

of

the needle bar.

that

the

direction

that

the

holes

of

respective

the throat

)

0

~

0

~

0'-::

mm

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 Adjust the height of the rear needle guard by loosening the

screw

6B

and move the rear needle guard Adjust the pushing amount by loosening move the rear needle guard back and forth.

o Adjust the height

screw

~

and move the front needle guard ~ up and down. Adjust the inclination at the same time. Adjust the clearance for the needle

•

(Caution) Use a

Check sides

the screw

of

the front needle guard

by

loosening the screw ~ .

3132"

hexagonal wrench

that

there

is

no

looseness

of

the

rear needle

41)

•

guard

Q)

up and down.

the

screw

by

loosening the

for

the

on

the left/right

when

it

and

screw ® .

tightening

o

If the clearance between needle large, it causes the skipping stitch,

the damage

looper and needle breakage.

o

If the rear needle guard and

needle hits strongly, it will cause the

damage of the needle top.

o

If the clearance between the front

needle large, the loop becomes

the skipping stitch will occur.

o If the front needle guard and the

needle becomes large and the skipping stitch, the damage point and the damage

point of the looper

guard

of

the blade point

guard

hits

strongly,

and

will occur.

the

needle is

the

of

the

of

the

rear

of

the

needle is small and

the

loop

needre

the blade

35

CS100

6) Clearance Clearance between the blade point of the

mm.

(Clearance of the middle needle is a little larger.)

between

the

looper

and

needle

v Right needle

0 toO.OS

Top point of looper

7)

Adjusting

o The clearance between the blade point

be

amount

equal.

mm

of

the

longitudinal

amount {Ref. 1.54

of

mm)

looper-avoid

moving

looper

1

Standard

looper and the grooves of the right and left needles

Adjustment

DtoD.OSmm

looper

lj

==;;:!/~:::<:::::;~~~

I'

0

Needle

.

of

the looper, and the grooves

Left

needle Right needle

~Locus

of

the left and right needles should

ofloope'

L.

is 0 to

0.05

o When the looper moves to the right, the tip

position

of

213

from

the

upper side

of

the looper.

of

the left needle contacts the back

/Left

needle

of

the looper at the

•

)I

Needletipr

(Adjust when the needle is replaced with an excessively different sized needle. Check that the clearance

the

between posilion

of

looper

213

and

from the

the

needle

upper

side of the looper.)

Loope'

is

correct

and

the

needle

tip

contacts the back of

the

looper

at

the ,

36

Adjustment

Procedures

Results

of

Improper

Adjustment

o Adjust by loosening the looper base setscrew G and move

the looper holder back and forth.

<D

Adjustment of looper path

o

If

the clearance is large, skipping stitch of occurs. And needle point will occur due strong

o

If

damage looper and the occur. And, the skipping stitch will occur back of the .looper and the needle becomes large.

Left needle Right needle

the needle thread scooping

the

damage

hit on the back of the looper.

the

clearance

of

the-blade point of

as

the clearance between the

is

needle

small,

breS.kage

of

to

the the

the

the will

~st)~

Position

o Looper path between the engraved

lines

D and C is left upward.

clearance of the left needle is large

Loosen the setscrew

the engraved line D about 3 mm from the engraved line E and

rotate the cam rightlleft

equaL

®Adjustment

•

needles and the blade point of the looper should be

of avoid

Amount of avoid Amount

0 of the looper path shifting cam

8 to adjust so that the clearance between the

small t

of

avoid large

0.

Place

~~~

Loosen the screw 0 and nut 0 Then move the screw 0 back and forth to adjust. {Use a 3/8" spanner

forO.)

of

the looper

Needle Path of looper

cam

•••

'

/

guide

i)

.

and skipping stitch occurs.

o If the engraved line E

than

3 mm from

is left downward. The blade point

breakage occur.

o

If

the amount

clearance between the needle and

the

back

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 of the looper becomes strong. case, the damage of the needle top,

needle breakage and scratch on the back of the looper occur.

D,

the looper path

of

the looper and needle

of

avoid is large, the

of

the

looper

of

is

turned more

damage

becomes

In

D-C

The

of the

bac~

this

{Caution)

After

the

between

groove

Use a

1/8"

adjustment,

the

blade

of

the

needle.

hexagonal

check

point

wrench

of

again

the

for

the

looper

the

screw

clearance

and

the

0.

37

CS100

8) Position of

the

Standard Adjustment

feed dog

o The clearance between the slot on the throat plate and the leftlright sides

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

o Tilt of the feed dog is parallel

o Adjust so that the throat plate and the main feed dog do not contact each other even

is

in its maximum stroke end .

to

the throat plate when the needle bar

their

stroke.

of

the feed dog should be

is

in its highest position.

if

the main feed dog

•

o Adjust so that the throat plate and the differential feed dog do not contact each other even

maximized.

38

if

the stroke

is

Adjustment Procedures

o Loosen screw

feed dog

o Loosen

differential feed dog

o Loosen screw

to

adjust the longitudinal position of the main feed dog

o Loosen screw

longitudinal position of the differential feed dog

o Loosen

and the differential feed dog

o To adjust the maximum stroke of the main feed dog, loosen

screw

e and rotate spacing stop

@I

when the main feed dog has reached its maximum stroke

and while the throat plate does not contact the

dog.

o To adjust the maximum stroke of

•

loosen screw

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.

6

fj.

screw

'I)

f1)

screw@!)

til

to

adjust the left/right position of the main

@4

to

adjust

8).

and move the main feed dog back and forth

the

left/right

position

of

the

ti

and rotate the eccentric nut

to adjust the height of the main feed dog

f)

.

~so

that

the

differential feed dog,

and enter the stopper pin

to

adjust the

8)

.

it

contacts the pin

main-

~to

the end when

feed

.

fi

Results

If the lateral position of the feed dog

o

is

the feed dog and

will wear out. Heating

noise

feed quickly and looseness and bending of the components abnormal components

of

Improper Adjustment

not

correct, the left/right sides of

the

throat plate

and

abnormal

will be produced. Also, the

components

~ill

will

will occur. Also,

noise

from

be produced.

wear

o If the height.of the feed dog

the

stitch

length

sewing becomes smaller.

o

lithe

height

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 contact

breakage.

With

at

the

finish

o1

the feed dog

each other, it will cause

is

out

the

low,

of

high,

in

39

9)

Spreader

CD

Timing

2.5:!:

0.1

Just when the needle descends 2.5 mm from highest begins to return from its extreme left position.

Q)

Position of spreader

5.5:!:

0.1

Descend~

Highest

mm

C~~~~~~~~~~

point of the needle bar. the

point

.::::::>Return

II

mm

--r-*'1

~

Standard

the

spreader

Adjustment

®Stroke

.

:,

•.

_;;

'

,.

Direction

of

cloth

19±0.1mm

feeding;;

/

~

..

-~

...

;-t

...

''

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,

of

the distance between the center

and the top blade of the spreader

o

When

clearance between the spreader and the left needle is

the

spreader

0.3 to 0.5 mm.

returns

the left needle

is

5.5 ±

0.1

to

the

right,

mm.

the

@Fixing

Top

•

between middle

spreader thread guide

blade

of

left

the

should

be

side

and

groove.

Spreader

Extreme

right

Show extreme right when setting height

spreader at

position

o When the spreader is in the extreme right position,

the

lop

blade

of

left side groove.

o The height is

spreader.

and

the spreader

middle

of-

0.4

to

0.8 mm from the surface of the

..

should be between

the spreader thread guide

® Needle clamp spreader thread guide

Fixing spreader

thread

guide

o When the needle

clearance thread spreader thread guide

o

The with the left side of the fixing spreader thread guide groove.

guide

center

bar

between

and

ol

the

hole of the thread guide aligns

is

in

the lowest position, the

the

needle

the

upper

is 4.0 ± 0.5

clamp

face

of

mm.

spreader

the

fixing

Needle

thread guide

clamp

spreader

40

Adjustment Procedures

o

Adjust loosening the screw spreader eccentric cam t))

1~Fo~;;:::===E~

-b

0

and rotating the spreader

'

eccentric cam

o

Adjust loosening moving it back and forth. If

it

stroke becomes small. If it moved stroke becomes large.

o

Adjust spreader by loosening the screw

spreader e up and

o

Adjust

between the spreader and the left needle by loosening the

spreader f)- back

o

Adjust

position by loosening the

screws e and move the

spreader

right.

the

timing

@)

.

the

stroke

the

nut G and

is moved toward you, the

to

the

back,

the

height

81

and

move

tile

clearance

screw@ and

the

moving

and

extreme

@I

to the left and

by

Got

the

by

the

of

the

down._

the

forth.

left

Results

If

o

skipping stitch is likely to occur as

when

needle does not catch the covering thread.lf the timing is too retarded, the right as the resistance of the covering thread becomes strong passes the covering thread looper.

is

o If the movement amount of the

spreader is not set right, skipping stitch of the top covering thread occurs.

o

If

set right, skipping stitch of the top

.

covering thread occurs.

o

If

spreader and the needle is small,

the needle breaks. If it is large,

skipping stitch of the top covering

thread occurs.

o If

spreader

the top covering thread occurs.

is small, skipping stitch of the top covering thread occurs.

of

Improper

the

timing

the

needle decends,

needle

the height of the spreader is not

the

clearance

the

protruding amount

is

large, uneven stitch of

Adjustment

is

too

is likely to be

between

advanced,

the

broken

·when

the

of

the

If

it

If the height of the fixed spreader

o Adjust the fixed spreader

thread guide the

screws ~ .

Gl

by loosening

•

o Adjust the needle clamp

spreader thread guide loosening the screw

@;!

§iby

.

o

thread guide is set about 4

performance of the top covering with the spun thread is improved. But, for other threads, cause the defective pick-up of the thread.

o

If

the position of the fixed spreader thread skipping stitch of the top covering thread occurs.

If the position of the, needle clamp

o

spreader thread guide is not set

right, skipping stitch

covering thread occurs.

guide

is

not

mm,

it is likely

set

of

the top

the

to

right,

41

CS100

10) Looper thread cam

G)

Timing of the looper thread cam

Standard Adjustment

When the needle bar descends and the needle looper thread

the looper cam.

aligns with the lower part of the looper, the

tip

can

be cast off from the highest point

of the left

of

•

® Position

of

the looper thread

Highest point

cam

thread

of

looper thread cam

Wooly

nylon

guide

1hread

The looper thread

center

of

the slot.

(In

case

of

wooly

slot.)

cam

thread guide

nylon

thread, at the upper end of the

is

to

be

set

in

the

42

Adjustment

o Loosen the screws

needle thread down.

guide@) and the thread control finger

i:lS

Procedures

and

liD

o

Timmg thread loosening the screw

and rotating the looper

thread cam At this time, set so that the In

adJUstment, loosen the

screw

and adjust on condition

that cam $ contacts collar

o Loosen the screw

the parallel and the

~

that the middle latch is parallel

thread guide base and

the clearance

. and adjust

of the looper

c:am

col!ar@i>

case

@»

of the collar

the

looper

€!).

lor

the clearance so

to

by

moving the lett

is adjusted by

EI9

~

.

contacts~

of

lateral

(i)

thread

the

I)

tor

screW

.

ED

the looper

is

4.0 mm.

E&

up

and

Results

o If the timing of the looper thread

cam

on the back of the looper occurs.

If

retarded. thread tightening is not well.

o If the looper thread cam

in the center, the cam is scratched. If the clearance between the middle

o

latch and the looper thread guide base thread suddenly slackens and skip stitching on the back of the

occurs.

If the thread guide

o

the looper thread after the sewing

is finished becomes tight.

If the thread guide is lowered too

o

much, the looper thread after-the sewing is finished becomes slack.

of

Improper Adjustment

is too advanced, skip stitching

the

timing

is

more

of

the

looper

t~an

4 mm, the looper

is

raised too high,

is_

is too

not set

looper

(Caution) Use a 3132" hexagonal wrench for

EEl

and

a>

.

the

screws$,

•

43

CS100

12)

Position

of

the presser

Standard Adjustment

bar

When the feed dog is under the lower part

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

O.Bmm.

13)

Position

When the presser foot is raised by 3.0 mm, the thread

tension

(!) point, the thread tension disc opens and there is

tension on the thread.

and

the upper end of the presser bar bushing is

of

the

needle thread

opening

, and when the presser foot is raised at its highest

pawl 8 contacts

tension

the

release

thread

of

tension

the throat

(without

disc

no

thread trimmer)

3mm

=~=-'

Throat

14)

Position

G)

•

® Adjust the height of the presser loot

and

height

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

presser foot when the needle bar is

of

the presser

foot

on

condition that the presser foot is set right to the presser bar .

so

that the needle top does not come out from the bottom face of the

in

its highest point.

Lower

Throat

plate

bushing

Spreader

Max.8.0mm

Note:

On

elastic

madrlnes

height

is

maK:iltun 7 .Omn

44

Adjustment

Procedures

Results

of

Improper

Adjustment

o Loosen the two screws

the presser bar

bracket~

4!l

and adjust the position by moving

up and down.

o Loosen screw

by moving the bracket

@.:,

and adjust

4»

o

If

the presser bar bracket and the presser bar bushing

of

face closely fitted on the throa1-plate.

If

the clearance is too large, the lifting amount becomes

Thread tension not being

.

No

tension during sewing.

clearance

is

too small, the bottom

the

presser

of

the presser foot

smcill.

between

foot

is

_released.

the

not

o Adjust the position by loosening the

lil

presser foot

o Adjust the height

~

and hit it to the

•

mm over from the lower part of the presser foot when the

needle is screws the collar and the lower bushing Adjust by loosening the nut the clearance between the top end of the screw lever(!) descends and seats tightly on the throat plate.

(i)

to the left and right.

by

loosening the

lever®

in

its highest point. At this time, loosen the two

and fix the collar

becomes 0.5

so that the needle tip comes 0.3

€!)

(ij

mm

on condition that the presser foot

screw~

nut

@)and

so that the clearance between

is

0.2

and rotate the

and moving the

rotate the screw

mm.

screw~

~

and the

so that

o

If

the position not correct, sewing and If the height

o

not correct, of

the spreader, needle scratch on workpiece, defective sewing and lack of the feeding force.

of

the presser foot

it

will cause defective

non·straight sewing.

of

the presser foot is

it

will cause breakage

is

45

CS100

15) Position

CD

Middle thread guide

-----------

Spun thread

Cotton thread Wooly Tetoron thread

@ Needle bar needle thread release

Lowest

of

the

thread

nylon thread

point

of

needle bar

~

point

of

needle

guide

and

thread guide attaching

Left needle

thread

16mm 16mm 16mm 16mm

Nee~::"

Needle thread release

bar

Standard

Middle needle

o When the loop

needle thread release as shown lowest point of

If

o

release

the lowest point

Adjustment

base

~

Right needle

of

the

needle bar.

of

the

thread

13mm

21

mm

21 mm

21

mm

ne_edle

thread is not easily formed, raise

needle bar.

in

the left figure

{Fix right

thread

14.5 mm

21

mm

21

mm

21

mm

the needle thread is a cotton thread, raise the right needle

so

that the right needle thread only touches

at

the

extreme

point

of

the

at

the time of the

at

the time

slot.)

the

thrE!ad

of

·~·if\.~·-·

release thread release

o

It

the

Lowest

point

of

needle

bar

~

Needle bar

•

rr -])

~Needle

balance

th,ead

release

needle

release

thread is a

so

that the needle thread does

spun

thread, lower

not

touch it.

the

needle

thread

® Spreader balance thread guide

be

..

-V~'·••en

r

@ Needle thread nipper

Thread guide

When the spreader moved to the extreme left position, it should 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 cotton

the needle

and

teteron

thread

type

nipper,

threads.

except

46

Adjustment Procedures

Results

of

Improper Adjustment

o Loosen the screw

~to

the extreme

Loosen the screw ~ and adjust the respective heights "

~referring

the actual stitching.

o Loosen

release

o

Loosen

release

to the left table. Make the fine adjustment watching

screw

f)

screw

~

61

and fix the thread guide attaching base

right

4D

and adjust by moving

up

and down.

i)

and

adjust

up and down.

by

moving

the

the right

needle thread

needle

I.

thread

o

If

it is raised, the needle thread is

tightened.

o If

it

is lowered, the needle thread

slackens.

o The tightened stitches

needle and slackened attaching base is-moved

o

If it is raised, the loop of the needle

thread becomes large.

o

If

it

is

thread becomes smalL If the loop

o

too occurs, release.

o If the

(the loop is too large) and the skip stitching occurs, lower the needle thread release.

iett

needle can be simply

if

·the

towered, the loop of the needle

is

not formed (the loop is

small)

raise

loop

and

the

is

excessively formed,

of

thread

to

skip

needle

the right

the left.

stitching

thread

guide

o Loosen

up and down.

screw~

and adjust

by

moving

the

thread guide

~

o

If

it

tightened_.

o

Use

is raised,

is

of

the

lowered,

the

nipper

thread slackens.

the

thread

for

the

threads

is

o

If

it

used

Not

used

for

cotton

tetoron thread.

for

•

Used spun thread (stretching thread}.

o Use

wooly

of

the nipper for the materials

thread

nylon thread

SAd

and

used

Not

used

for

the

light-weight

4.

OTHER

(1) Points

PRECAUTIONS

to

which Locklite

is

applied

Locldlla 222

materials

.

Used

materials

of

jersey,

for

the

of

jersey, knit and cloth.

knit

heavy-weight

and cloth .

47

•

5. TROUBLES AND CORRECTIVE MEASURES

!;;

Troubles Cause (1)

Cause

(2)

Corrective measures

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

I Thread caught fn thread guide, Incorrect

threading

Resistance ate. stitch

thread taka·up nipper, needle guide,

thread

Strong guard guard resulting In thread breakage.

Too thin

Needle number in thread breakage.

Poor quality and weakness

Too strong thread tension

Interference with feed dog, throat plate due

Ito

the Incorrect mounting height

Flaw plate, underside In presser

produced

around

needle

tongue,

looper,

tension disc etc.

contact

of

produces a sharp

needle

Is

ollabllcs,

produced In stitch

lead

needle against

lor

heated depending

sewing speed resulting

dog,

tongue

by

!law, burr, rust

entry

of

spreader,

edge In

the thread

on

of

tongue

In

presser

loot

throat plata,

needle

needle needle

used

Iabrie type,

thread

of

looper

In throat

foot,

Refer

to

threading diagram.

Remove

finish. However, replace throat plate

changed

-I'" case needle holder .,

out, replace it with

Replace II with

· [ Use thinner needle. Reduce the sewing speed. Use silicon oil lubricant device.

. I positioned

Mount it

the

flaw, burr etc.

etc.

wllh the new part because their shape

by

being polished

the

new

an

appropriate needle.

Replace

It

With

the thread

Reduce

thread

tension.

too

high making the thread tension

In the correct position.

Remove the flaw, burr etc.

and

polish

such

important parts

or

looper needle guard

part

ol

good quality.

Adjustable

the

thread guide

as

thread

too

looper or

Is

worn

guide

strong.

Is

l

Is

l

2.

looper

thread breakage Thread guide

H

looper

thread cam ad]uslment

~

Thread tension

To

the next

page

Resistance etc. In stitch longue In throat plate,looper, looper thread cam, thread guide, thread tension.

Excessive Incorrect liming, thread guide

Too

produced

disc

tension

position

strong tension

by

applied

of

looper

olloopar

flaw, burr, rust

due

to

the

thread

cam

thread

Remove the flaw, finish. However, replace such parts part because

Rater to stal'ldard ad]uslmenl.

Reduce the thread tension while checking

] balance against the needle thread. top

Its

burr

shape

etc. and

Is

changed

polish

as looper with the new

by

the

thread guide

being

polished

to

seethe

covering thread.

tension

•

I

3.

Needle breakage

Troubles

From

Cause (1) Cause (2)

the

previoc"~':,'c'o'<:':-------------,

-l

Thread

-J

Looper avoid

-J

Needle heat

entry

Needle

f--

H Spreader

H Interference

movement

H Needle guard

I

or

looper with scooping

or

needle

f--

H Needle thickness No.

Thread tension

Y Food heigh!, Needle height

Poor quamy and weakness of thread

Too strong contact of looper back with

needle

resu!llnyln

In case needle heat is generated Ioeper

thread's

contact

breakage, specialty at the time machine

Is

at rest

Needle hits

because

positioned

Too hnle clearance belween spreader and needle

Needle breakage. the correction

Too strong contact against

or

Incorrect

Too thin needle

Noodle thread tension

Feed too tow

-.to needle

the

hils

needle polnl hils needle guard due to

position.

dog

resu!llng

thread breakage

with

the

throat

needle

lor

the plate

looper

lor

Is too high

In

feed

needle

causes

thread

plate

or

,entry

fabric used Use thicker noodle.

needlo breakage due

presser loot

is

not

or

fool.

resulting In

needle guard

Is

too strong.

or

needle height Is

correctly

needle~

Replace II with good quality of thread.

looper contacts the needle at213 height

-----1

Refer to needle heat In needle breakaga

---1

~

r--------1

t--1

Align the needle entry

Refer to standard adjustment

Make adjustment so that looper does not hit the looper. For

moving amount, front and rear.

Refer

Reduce the

Refer

Corrective measures

Adjust moving amount, front and rear of looper so that I

lo

the needle.

of

the contact

to

standard adjuslmenl

needle thread tension.

to

standard adjustment vatuo.

at

looper's

of

top

olthe

back. I

back, adjust the

J

I

4.

Worn

out needle point

Needle guard

--1

Interference with looper

Jln?orrec-1 height

J balanced.

and

rear

Moving

or

Incorrect position, front J

amount,

front

and

rear

Is

Ill r -

J Check to eee the

belwean fl6edla guard and needle.

Adjust

n\oving incorrect position returns.

height

of

neodte

amount,

front

of

looper's back and the contact when n

and

guard

rear

and

clearance

correct

the

•

Troubles{1)

l

S!llch

skipping

Troubles(2) Cause (1) Cause (2)

1--n Looper does

right needle thread. looper disables scooping a loop.

><;,

k

kC

k:

k

,

..

Right

not

scoop the I

--

,,.

-

Right

Corrective measures

Looper

----j Needle

-j

Nipper

--1

Adjustable

, thread guide Too high _ _t-----t Correct the

I Incorrect

Needle

shape

bent.

ol pointed

incorrscl

end

needle

I mounting direction, w10ng needle

Not

used.

ol Replace it with the genuine part.

J

r--1

Replace the needle with new one, Correct the

mounting direction,

GBS F$300.

Use

nipper.

height

--1 Needle height Needle bar position is too high. Refer to standard

-[

Threading Incorrect threading Refer

--i

Needle guard Not used.

---1

Spreader

--1 Needle

---1

looper

heat

adjustment

Spreader

Stitch

I

breakage

Incorrect

thread tension Is too strong. Reduce the tension.

skip

occurs

before

produced

clearance

bv

thread

needle heat.

adjustment,

to

threading diagram.

Use

needle

guard.

Same

described

needle

hear

Reier

to standard adjustment.

I incorrect returning amount adjustment

--t.

Needle guard. front end rear I

Incorrect height

contact

amount,

lncor.rect r

Reier to standard adjustment.

Use

UY121GJS

to appropriate

adjustment

in

page " Thread

CSIOO,

height

breakage

I

UY128

I

by

I I

~~

looper

does

not

middle needle thread. J

scoop

./,

~

,

..

Righi

Loh

the

Righi

looper

---1

Needle

:-1

Nipper

~-Adjustable

H Needle

thread guide

height

H Threading

"

To

the next

To

the

page

I

Incorrect looper disables scooping a loop.

Needle

\mounting

Being used.

Height

Needle bar

Incorrect

shape

bent,

direction,

Is

1oo

low.

height

ttlreadlng.

of

pointed

incorrect

wrong

Is too low.

needla

end

needle

ol

I

Replace II with the genuine

Replace mounting direction, GBS

Do

Correct height

Reier

tha

naedle

FS300

not use nipper.

to

standard adjustment.

to threading diagram.

Use

posi11on

with

UY12JGJS

to appropriate height.

part

naw

one,

Correct

CSIOO,

the

UY128

J

•

Troubles(1) Troubles(2) Cause (1) Cause (2)

From

lh&

prevlou

..

,,

,p

••

From

the previous page

o.,g,"o

I Needle thread guard

H Spreader

~

Baing

used.

Spreader thread tension

H Needle heat Stitch skip occurs before thread

I

H Looper adjustment

breakage

Incorrect

produced

clearance

by

I Jncorrectratumingamountadjustmeni I

Needle

guard,

Iron!

and

~~

Looper needle thread.

~

LoH

does

not

scoop

~

:/

~

k::: k::: k:

Right LoH Right

the

rear

left

~

r-1 Looper

H Needle

H Nipper

H Intermediate thread guide Height H Needle height H ThreadlniJ H Needle guard H Spreader H Needle heal

I Incorrect contact amount, Incorrect I

height

I Incorrect shape ol pointed end of I Replace it with

looper disables scooping Needle

I mounling dlrecllon, wrong needle . J

Being used.

Heigh!

Incorrect threading Being used. Too near to

SUtch

I breakage produced by needle heat. . j

bend,

Incorrect

Is

too

low. Correcl height position

Is

loo low.

the

len needle Reier

skip

occurs

before

Is

too

strong.

needle

heat.

adjustment,

a loop.

needle

thread

~

- I

Corrective measures

Oonotuse.

Reduce

the

tension.

I Same described

neadla heat"

Refer to standard adjustment

Refer to standard adjustment.

Replace the needle wlth new one. Correcl the mounting direction, GBS

FSJOO.

Do

not

use

Refor to slandard adjustmonl. Refer to lhreadlng diagram. Do

not use.

to

standard adjustment

Same doscrlb&d In page "Thread breakag& by

I.

needla heal"

the

nipper.

In

page "Thread breakage by

genuine part.

Use

UY

121

GJS

CS

1 00,

UY12B

lo

appropriate height.

I

I I

I I I I

H Looper adjustment '--I

Needle guerd, front and rear

To

the next

page

!Incorrect

Incorrect ralumtng amounl . I

clearanca

adjustm&nl.

I Incorrect contact amount, Incorrect I

height

Refer lo

slanderer

Refer

to

standard adjustment.

adjustment.

I I

•

Troubles(1) Troubles(2)

From I he

Needle does not scoop the looper

thread.

skip)

Mlddta

needle

Stitch

tklp

Slack

Stitch aklp by left needle

(Triangla stitch

needle

by middle needle

ollooper

Loll

thread

Cause (1)

looper

---1

Needle

---1

Needle height

--1 Threading

ad]uslment

Looper

--i

Looper thread tension

---1

Looper thread cam liming

Cause (2)

shape

is

incorrect. Replace

Needle

bent

Needle

bar

position

is

too

high.

Incorrect threading Reier to threaa'ing diagram.

Incorrect

ltncorrect

Tension is

Looper thread com timing

claarancil

returning amount

too

weak. Increase tension.

adjustment,~

Is

too

fast.

Correcllve measures

II

with

the

genuine

Replace

Refer to standard adjustment.

Rater to standard adjustment.

the

Refer

to

standard adjustment.

needle

with

the

part.

new

one.

I

I I I

I I

I

Slack of looper thread

To

the

'

•

Troubles(1)

From tho previous page

Troubles(2) Cause (1) Cause (2) Corrective measures

--jr:S~k~lp~p~loogQi;o;l.!o>Jp>Cooo'"'"'"'"""''""'

I (righl) I spreader disables scooping a thread: I

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

H Needle H Spreader adjustment

Stationary spreader thread

guide

H

H Needle height H Threading

H Needle holder I I

thread

guide

spreader

H Spreader thread tension Spreader thread tension

Spreader

drawing-in amount

take-up

Skipping

~

r------1

thread

In

top covering stitch by right needle

Needle

bent.

Incorrect height, protruding amount, - Refer position, front

Incorrect height,

Needle

bar

posiUon

----4

Incorrect threading

Incorrect height, position, front and I

rear

Incorrect drawing-in amount of thread

Riight

n1eedle

wrong needle Replace the needle

and rear J

position

Is too

tow.

}--------1

Is

too

weak.

UY121GJS

Refer

Reier to standard adjustment

Refer

Increase tension. Reier

Skipping Slmulblneoua

CStOO,

to

standard adjustment.

to

standard adjustment

to

threading diagram.

to

standard adjustment.

to

standard adjustment.

In

top covering stitch by right needle

skip

by

UY128 GBS FS300.

left

with

!he

and

middle needle

new

one,

Use I

I I

I

~¢

~::1'

needle

Right

To

the

Middle Right

Lett

'

covering

thread.

.().

"'

does

not

Stride over

\'~

Right needle

the

top

b-ro

-"-

~

Spreader

does

not fetch the top covering thread.

~

catching thread

··""''~t=

•

Troubles(1}

From !he previous page

Troubles(2)

~~

Skipping

in

top

covering

(Middle) I UY121GJS CSIOO, UY128GBS F$300.

stitch Needle Needle

----j Spreader adjustment Incorrect height, protruding amount, r Reier to standard adjustment.

--j

~

---l

Cause (1) Cause (2) Corrective measures

bent.

wrong

needle

[ position, front

Needle height

Threading Incorrect threading Refer

Spreader thread tension

Spreader

Stationary spreader thread I

guide

pull-oH

~

ll=IIO

~

Incorrect needle bar position

Spreader

Incorrect drawing-in amount of thread lnconect height

Skipping In Middle needle doea

~~

~

;,/

and

rear

f-----1

thread

tension

Is

too

weak.

I-

r--1

and

position Refer

top

covering

Middle Middle needle needle

not

alllch

scoop

by

middle

top

covering thread.

~

¢

lf''LV

v---:::::

Replace the needle with the new

Refer

to

standard

to

threading diagram. Increase tension.

Refer

to

standard adjustment.

to

sll:mderd adjustment

needle

l

---"

'I

l~v

v---::::

adjustment.

J.

Left

~te

Right

Middle needle strides over

Middle needle

top

covering thread.aometlmes.

Middle needle

one.

Use I

I I

I

To

the

~

/£¢

.._-

~

~~

~

a?

-..;;

•

Troubles(1)

From

the

previoos

11

Troubles(2) Cause (1) Cause (2)

page

Skipping in

(Lett)

top

covering

sHtch

J

----1

Spreader

---j

Needle Needle

----1

Spreader adjustment Incorrect height, protruding amount.

~

Stationary spreader

guide

---j

Needle height Needle bar posilion is too low. Refer

---j

Threading

-j

Spreader thread tension Spreader tension is too weak. Increase tension.

Spreader pul!·olf drawing-in amount ol thread

Skipping

left

needle

in

top

does

thread

covering

not

scoop

etlteh

top

Ltncorrect shape

I position,

I

by

left

needle

covering

disables

Incorrect height and

scoopi!!g_~

bent,

l10nt

lnCOHBCI

Incorrect drawing-in amount ol thread

threading Reier to threading diaglam.

thread.

ol

pointed

thread.

wrong needle

and rear - I

posl1ion

en~-~

~

~~~

12

~

Corrective measures

Replace it with the genuine part.

I Replace needle with new one, Use UY121GJS I

CSIOO,

UY128GBS FS300.

Reier

to

standard adjustment

Refer

to

1---1

Loft

nHdle

standard

to

standard adjustment

ROier

to standard adjustment.

adjustment

~

¢

Loft

needle

~

I I I

I

1.::

To

the

~

Troubles(1)

From the previous page

Troubles(2)

~~ Single chain thread cast·ofl I

(Right, Middle.Left)

Cause (1) Cause (2)

Needle Needle

bent,

wrong needle

Corrective measures

I

Replace UY121GJS CSIOO. UY128GBS FS300.

the

needle

with

the

new

one,

Use

I

H Needle height

H_

Threading

Needle bar

Incorrect threading

H Throat plate A of stilch tongue in throat plata

small.

position is too high.

Refer

to

standard adjustment.

Aelarlo

threading diagram.

Is

too Increase A. Polish correctly.

lD.7(

R

Incorrect polishing

A of

H

t-i..

looper

adfustmenl

r--

looper's large and ridgellna is nolstJaght which needle thread is likely !rom looper.

Too lUIIe

lrooper's

body

section Is

conlact

back and needle ]

amount

too

lor

to

slip

between

Replace lt with the genuine

to

standard adjustment.

Refer

W Thread tension Thread tension Is too weak. Increase tension.

,

thread

g1.1ide

11_

Adjustat-.e position In too large needle thread loop

I I

H Threatt guard posillon

low

position of thr8illd guard results I

Thread guard position Is too high. Refer

•.

H Nipper J Use of nipper could easily generate J

this

trouble.

Looper

thread

guide position

cam

thread

I

Drawlng·ln amount of looper thread Is I

]too

much.

Lift thread guide position.

10

standard adji.IS!mant.

Do

not

use nipper.

Reduce drawlng·ln amount ol thread.

part

I

I I

J

I

_j

To

the

neKt

page

101

stitch

by

right needle

-

(

101

-

stitch

by

middle needle

l

by

left

needle

(

~

f-.

-

~

-

;::=

~

Right needle thread

•

Middle needle thread

miss

,___,

(

r---

-

miss

"

n :::

57

•

Troubles(1)

From the previous page

Troubles(2)

H~D~o~"~'~"~b~o~o;;diiloogg'''"'""""~rJT-{~T~h~m~o~t

I I (Middle, Lett) large. Stitch tongue

-j

Right needle enters middle

needle loop.

-1

--1 Needle height

~

Middle needle enter• left

needle

loop.

-j

--j

---j Adjustatle

1 position

---1

Cause (1) Cause (2)

p~I!••~·=====:J---J:R~ot~':i"~"~h~to~"~'~"'~'"~'"~'~oo~t~p~lo~to~l;;-,;;,oo~r---L

l(\)JC

.£('

R Length ol stitch tongue

Needle

Looper

Threading

Needle thread tension

thread

Nipper

guide

I

Worn out needle point, needle

I

wrong

needle

Fiaw

in

looper's body section, r-----1 Replaca tho looper

I

incorrect polishing I

Needle bar position

tnoorrectthreading Reier

Tension is

Thread guide position

Use

too

ol

nipper is likely

Is

too

short.

bent,

'::;'":'~"='~'d=.too~m="~':"·';:::::::::=======~

Is

too low.

weak. Increase tension.

is

too

low. Ult the thread.

to

generate this

I trouble. I

Corrective measures

Replace

11

with

the

genuine

part.

Replace needle with naw one, Use UY121GJS 1

CS100,

UY12BGBS

Reier

to

standard

to

threading diagram.

Do not use nipper.

FSJOO.

when

modified or its shape

adjustment

_I

Is

I I

I

I I

I

~

To

lhe

•

Troubles(1) Troubles(2)

lrregular slilches

l

u:l'c'c"c·

c"o"o'o''c·

c"'''c""J

__

From the previous page

1

HI-tensed

seam

Cause (1) Cause (2)

J--

rl

Throat plate

_JI

H Spreader adjustment Stroke of spreader is

----1

Incorrect polishing Polish correctly. I

~~~~~~~~~~~~==~~~~~~~~~~~~~~t==~~~~~~~~~~~~~~~~~~~

H Looper

H

Top

covering

thread

take-up

H Needle thread tension H Threading H Top covering thread tension

looper

thread cam thread

guide

position

Throat plate

H Needle H Looper

lWorn

r------1

t---------1

....

Incorrect

Drawing-in amount of top covering

thread

Needle !hread tension

lncorrec11hreading

Thread lension is

Drawing-in

100

Incorrect longue

Worn out needle point, needl& wrong needle

Worn

I Incorrect polishing

Corrective measures

too

large. Refer

out

looper's pointed end and I IAeplace the looper when modified

polishing

stllch

bent,

end,_

is

1

r

---1

Is

too

much. 1

amounl of looper lhread

much.

polishing,

out

looper's

loo

is

loo

weak.

Too

polnled

weak.

long

to

standard adjustment.

chemged

Refer to standard

Increase lension.

Refer

Increase tension.

Reduce drawing-In amounl

Correcl

Replace

CSIOO,

Replace !he

chenged too much. I

too

much.

adjustment

lo

lhreading diagram.

or

replace

part

needle

UY128GBS

with

looper

or

l!s

shape Is I

of

thread.

new

one,

Use

FS300. I

When

modified

UY121GJS

or

Its shape

is

I

I I

I

I I

I

I I

H Needle helghl

1--

Threading

H Needle thread tension

--j

Adjustalje

thread

guide

I position

--j

looper

thread tension

looper

thread

cam

thread

To

the

nellt

guide position

page

I

bar

Needle

lncorrecl threading

Tension Is too weak.

Thread guide position

Tension

Ore.wlng·ln amount

position

Is too strong.

I too lillie.

Is

too low.

Is too low.

ollooper

thread

is

Refer to standard

Refer

to

threading diagram.

Increase tension.

Ufl

the position

Reduce tension.

Increase drawlf!Q·In amount

adjustment

of

lhread.

I

I I

I

•

Troubles(l) Troubles(2) Cause (1) Cause (2)

0

"'

From the previous

page

H~l

~~~~•29~"~''~':;:'';U~Ic~h;;,;;,;t,,;;-;,;;,;;,~

I I covering stitches obstrucls smooth thread threading.

Bulge

~-~{~SEP'~'~'~'~'~'

H Spreader adjustment H Thread guide

H

Top

Needle thread hmsion

c-1

Threading

1--l

r-{

Top covering thread tension

t----1

looper

I I guide position

y Stitch tongue

Throat plata

=======f----j~F~Io~w:,:io;:<p~o~io~l~o~d~o~o:d~o~I~'!P~'~'~'~';'~'

Spreader stroke Is

Flaw,

covering

thread

take-up

cam

or

presser fool

thread

I

f---1

f

J

Drawing-in amount of top covering

j

thread

Needle thread tension

I

Incorrect lhreading

1st thread tension is too weak.

Drawing-in amount of looper thread too much.

!

Thread

j

to

incorrect shape

Stllch tongue

burr

in

Is

too

threading

"'=+=

Flaw

too

slot

much

or

is

of

Is

too short.

1~

large.

too

JitUe.

is

too weak.

· I

1--1

Is

not smooth

stitch tongue. I

due

f---1

I

Corrective measures

Replace

when

modified

or

its

shape

is

shape

changed

is

changed

Is

changed too j

IL:'m:":'""c·

_______________

Refer to standard adjustment.

Replace

when

to

stand!ud

when

modified or its

adjustment

amount

modified

or

Its shape

of thread.

j

much.

Refer

Increase tension.

Refer to threading diagram,

Increase tension.

Reduce drawing-In

Replace

much. . I

!

Usa

throat plate provided with tong slltch tongue. 1

too

I

j

I

---1

Threading

---j

Needle thread tension

---j

looper

thread tension

looper

thread

cam

thread

To

the next

guide position

page

I

Incorrect threading

Tension

Is too strong.

Tension

Is

too strong.

Drawing· In

too tittle.

!

amount

of

upper

thread

is

Refer

to

threading diagram.

Reduce tension.

Increase drawing-in

amount

I I

•

Troubles(1) Troubles{2) Cause (1) Cause (2)

From the previous page

Detective chain-oil thread

(with

top covering stitch)

Stitch skip & stitch missing at

1-

of

sewing

start trimming sawing covering smch)

(thread

machine.

alter

>---

thread

trimmer

boltom

Throat plate

H Spreader adjustment H

looper

adjustment

l Thread threading Is not smooth due Replace

to

incorrect polishing

1---

Stitch skip

I

to

Incorrect adjustment

Stitch

in

top covmlng stllch due

skip

due to incorrect adtustment

H Top covering thread take-up Drawing-in amount

I thread

is

too much or

H Needle thread tension H Threading

1-1

Top covering thread tension

-

S1itch

tongtJe

ot presser

~

Needle

Feed dog

rl

Double cutting

H Looper thread clamp H Pulting..jn of thread

loot~

Needle thread tension Incorrect threading

t stthread

Thread threading is not smooth due to

Worn out

wrong needle . I

Flaw on surface In feed dog Modify

Remaining

tension is too weak.

Incorrect shape of stitch tongue. J

needle

point

thread

I double cutting. . I

Clamping

Pulling-In at

force Is too weak. Increase clamping force.

amount of thread Is too little I

lima of thread trimming.

in

of

too

is

Is

stitch tongue.

r--;

lop covering r

littla.

too weak.

needle

bent,

too

shorl

by_

Corrective measures

when

much.

Refer to

Reier

Refer to standard adjustment.

Increase tension.

Reier to threading diagram.

Increase tension.

Replace when its shape is modified or changed

polished or its shape

standard adjustment.

to

standard adjustment

Is

changed too I

I much.

Replace

needle

with

new

one,

Use

'UYI2tGJS

I CS100, UY128GBS FS300. .

or

replace.

Refer

to

standard adjustment.

Increase pu!llng-in amount.

I I

I

too.l

I

H Mechanical wiper Clamping force H Pneumatic wiper

Presser loot

'

To

the next page

Is

Needle Is entangled with

ltncorrect

~

FaDing automatic

direction of air blow ouHet.

speed of presser Is too stow In

Utter.

too

weak. Increase clamping force.

thread

bY

l

Correct direction so that remaining thread flows

presser bar

Increase

side.

falling

I movement etc.)

speed.

(to

get

rid

ol

shaky

to

I I

•

Troubles(1)

~

D_erective

tnmmer

thread I

Troubles(2)

From the previous page

I Unable

to

trim

needle

looper thread

Unable

to

thread I

trim top

thread.

covering

Cause (1)

0

til

~r!:,

,',c,c,c"c;,cgclohc,.c,c,c,c.,,cm=p-.r----!

Pulling-in

I

Returning

~nile

H Stationary knife H Timing of thread trimming

of

covering

position

thread

ol

movable

~

Clamping

Pulling-in amount of covering thread Increase pulling·ln amount

Is too little

Insufficient relurnlng amount of

movable with stationary knife.

Worn

sharp cutting. I

lncorrecllooper

-

knife disables engagement

out

edge,

H Movable knile stroke Inappropriate stroke

~~

Clearance between movable knife and looper

Engaging pressure (Movable Engaging pressure is too weak. Refer to standard

and

stationary knife)

Intermediate

thread

~

guide

Incorrect posillon, tront and rear, movable backposition

Thread guide position is too

l position

Cause (2)

force

Is

too

weak.

at

lime of thread trimming.

nicked

edge

disables

stopping position Refer

knife

against

looper's

tow-.

~

of

Corrective measures

Increase clamping Ioree.

Refer to standard adjustment.

Sharpen

Refer to standard adjustment.

or

to

standard

replace edge.

adjustment

lilt the position.

I

I I

I

H Stationary knife Worn

f--1

Initial position I

--t

Spreader stopping position Incorrect

Engagement movable knives

~

Opening amount knife

and

between

stetlonary

of

movable

--1 Clamping pressure

out

sharp cutt!ng.

Incorrect spreader

(Sewing machine

lnsufflc!ent engaging amount disables I

cutting

lnsufliclenl

movable

thread.

Clamping

edge, nicked edge disables I Sharpen

posiUon

spreader

of

thread.

knife

pr&ssure

of

knife

stopping position \

Is

at

rest)

opening

disables

Is

too week.

amount

against

catch

of of

or

replace edge.

I

Refer to standard adjustment.

I Make adjustment so that sewing machine Is brought..J

to.

rest

at

the tpp deed point

Reier

to

standard adjustment.

Refer to standard

j-

-j_

Refer

to

standard adjustment.

adjustment

of

needle bar.

I

NOTES

•

WORLDWIDE

SALES

AND

SERVICE

Union Special Corporation maintains soles throughout the

right sewing

the

world.

These

equipment

offices will for your particular

Special Corporation representatives

factory

trained

and

ore

able

to

serve efficiently. Whatever your location. there tative

to

serve you.

Corporate Office:

One Huntley,

Phone: 847•669•5101

Fax:

•

European

DistJibution

Center:

Union Special Raiffeisenstrasse 3

D-71696 many

Tel:

Fax:

Union

Special

in

der

gonzen Welt.

fUr

lhren speziellen Bedorf. Union Special Vertreter

sind

in

unseren Werken ousgebildetworden.

zu

bedienen.

unterh61t

Diese

Verkaufs-

helfen Ihnen in

und Kundendienst-Niederlassungen

and

service facilities

old

you in

the

selection

operation.

and

service technicians are

your

needs

is

a qualified represen-

Union Special Plaza

IL

847•669•4454

promptly

60142

GmbH

M6glingen,

49•07141•247•0

49•07141•247•100

der

Auswohl

um

Sie

der

richtegen Moschine

und

Kundeniensttechniker

schnell

und

of

Union

and

Ger-

fochmOnnisch

Brussels, Charlotte. Hong Huntley. Leicester. England Lille, France Miami, Milan, ttaly M6glingen, Montreal. Osaka, Santa Suwanee, Wayne.

Other

parts

Weitere Vertretungen in allen T ellen Welt. '

Belgium

N.C.

Kong,

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FL

Germany

Quebec

Japan

Fe

Springs,

GA

NJ

Representatives

of

the

world.

CA

throughout

all

der

Finest

Quality

Union Special FS300, CS100 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual