Reliable Sewing Machine 20U73 User manual

20U73
Industrial Sewing Machine
Instruction Manual
AV
3 RELIABLE
UN
1.APPLICATHON
This SINGER Artisan Zigzag Machine is for;
-Zigzag and ornamental stitching in a variety of width
and stitch fength.
-Perfect straight stitching.
-Superfine controi of stitch tength insures perfect
satin stitching.
Model 20U73/73B(9mm Bight)
201J83/83B(12mm Bight}
This machine is manufactured for alrisan zigzag sewing
and is suited for sewing light weight and medium
weight materials.
2.NOTES ON SAFETY
The machine must only be commissioned in full
knowledge of the instruction manual and operated by
persons with appropriate training.
Before putting into service, also read the safety notes
and the instruction manual. of the motor suppiier.
The machine must be used only for the purpose
intended. Use of the machine without the safety
devices belonging to it is not permitted.
When gauge parts are exchanged (e.g.needle,presser
foot, needle plate, feed dog and bobbin), during
threading, when the workplace is left unattended, and
during service work, the machine must be isolated
from the mains by switchingoff the main switch of
disconnecting the main plug.
On mechanically operated clutch motors without start
inhibitor, it is necessary to wait untii the motor has
stopped.
General servicing work must be carried ou only by
appropriately trained persons.
Repairs, conversion and special maintenance work
must only be carried out by technicians or persons with
appropriate training.
For service or repair work on pneumatic systems, the
machine must be isolated from the compressed air
supply system. Exceptions to this are only
adjustments and function checks made by
appropriately trained technicians.
Work on the electrical equipment must be carried out
onty by electricians or appropriately trained persons.
Work on parts and systems under electric current is not
permitted, except as spectified in regulations EN50110.
Conversions or changes to the machine must be made
only on adherence to all safety regulations,
For repairs, only replacement parts approved by us
must be used.
Commissioning of the sewing head is prohibited until
such time as the entire sewing unit is found to comply
with EC regulations,
Meanings of the symbols:
Danger spot!
Items requiring special attention
Danger of injury to operative or
service staff.
Be sure to observe and adhere to
these safety notes!
Earth
3.COMMISSIONING
To avoid disturbances or damages, it Is
& absolutely necessary to observe the
® following instructions:
Before you put the machine into operation for the first
time, clean it throughly and oil it well {see page 2).
Have the mechanic check whether the motor can be
used with existing mains voltage or not, and that
junction box is correctly connected. Do not start the
machine if the voltage is not correct!
When the machine runs, the balance wheel must rotate
toward the operator. If it does not, have the electrician
change the wires on the motor.
4.INSTALLING THE BELT GUARD
CAUTION
Switch off the machine.
Set sewing head upright again
useing both hands.
Danger of crushing between sewing
head and table top.
Do not run machine without belt
A
oil pad boy
вк
Pera
© 2
E = i = NS 0
pe = rr Г — A
— 4
\ e = -
Grease в
6 Fig.3.
guard! Danger of accidents!
Above table surface
Align the belt guard so that hand wheel and V-belt move
freely, then screw it down is this position (see Fig.1).
Below tabie surface
Install beit guard so that motor puliey and V-belt wiil rotate
freely without interference.
5.LUBRICATION
[ON
Switch off the machine.
Set sewing head upright again using
bothhands.
Danger of cruching between sewing
head and table top.
>» сео
rig.2.
Ö -Rotating hook and area under throat plate.
Turn hand wheel! over toward you untit oil hole in rotating
hook appearin sight.
Apply one or two drops of oil to the oif hole (see Fig.2)
Loosen and remove screws and remove face plate by
sliding it downward.
Remove screws and lift off arm top cover.
Clean and oil the piaces indicated.
Apply sufficient oil to all oil felt shown in Fig.3
Apply a small amount of grease to gear teeth indicated
with word ‘Grease’ in Fig.3.
Also apply a drop of oil to all other oiling points shown with
marks 0
Keep oli pad (A) under arm top cover saturated with oil.
CHOICE OF OL
(1) For (20U73/73B/83/83B) machines
Only use oil with à viscosity of 45.0 mmé/sec.at 38 °C
and a density of 0.888 g/cm? at 15 °С.
We recommend SINGER B-oil.
6.NEEDLE AND THREAD
Selection of the proper needle depends not only on the machine model, but also on the material and thread used. For
selection of proper needle and thread sizes to be used on the various machine models piease refer to the table below.
Model 73,73B,83, 838
For For
For light- medium- ¡um-
Application a at po
Wei wel eav
of class y J у
materials materials weight
materials
Max.thread size(Nm)-
| . 120 60 30
Synsthetic”
Needie size
10 12-10 18-19
(1/100mm)
( 80-100 ) (110-120)
Needle catalog 1910-05
(Needle system) ( 135x9)
*or an equivalent size of other types of thread
7.INSERTING THE NEEDLE
Fig.4.
CAUTION
Switch off the machine.
Do not operate without finger guard.
(2) (See Fig.4)
Danger of injury !
Use needle cat. No. 1910-05 needle system (135X9)
oniy.
Raise needle bar to its highest position by turning hand
wheel toward you.
Loosen needle set screw (1) (See Fig.4) Insert the needle
in the needle bar and push it up as far as it will go.
Make sure its long groove faces toward the front. Tighten
needle set screw (1) securely.
8.TO REMOVE THE BOBBIN CASE
Switch off the machine.
Do not operate machine with throat
plate left open.
1.0pen bed slide.
2 Raise latch (1) (see Fig.5).
3.Lift out bobbin case (2) (see Fig.5).
9.TO WIND THE BOBBIN
X
Fig.7.
CAUTION
Do not guide or hold thread when
winding the bobbin.
1.Stop motion of needie by toosening stop-motion screw
(1), Fig.6. Hold hand whee! with left hand and turn stop-
motion screw toward you with right hand.
2.Place bobbin on bobbin winder spindle (3), Fig.7,
pushing it on as far as it will go.
Pre-tension (1) (see Fig.7).
O More tension.
SI Less tension.
3.Push latch (2) in the direction indicated by arrow (A),
then start the machine (see Fig.7).
Bobbin winder spindie (3), rotate in the direction
indicated by arrow (8) (see Fig.7). Fig. 11.
To adjust the amount of thread on bobbin, toosen
screw (4) on latch (2) and swing the latch (2) away from t.Hold bobbin case so that thread unwinds in the
you or toward you, as required. direction shown in Fig.8, and put bobbin in bobbin
case.
For more thread on bobbin, swing latch (2) away from
you. 2.Puit thread into notch (1), and draw it under tension
spring (2) {see Fig.9).
For less thread on bobbin, swing latch (2) toward you.
If thread winds unevenly on bobbin, ioosen screw {5)
and move pre-tension (1) up or down, as required , and
tighten screw (5).
3.Draw thread out from siot(2) on end of spring (1),
(Fig.10) and pass it through bobbin case thread guide
(1),Fig.11. Allow about 4 inches of thread to hang
freely from bobbin,
NOTE: When straight stitching, a better result can be
obtained if bobbin thread is not threaded
through bobbin case thread guide (1),Fig.11.
10.THREADING THE BOBBIN CASE. 11.TO REPLACE THE BOBBIN CASE.
Fig 12.
CAUTION
Switch off the machine.
Do not run machine without closing
bed slide. Danger of injury!
Hold bobbin case by latch (1) and place it on spindle of
bobbin case hoider (2) so that position finger (3) enters
notch (4) at right of bobbin case holder (see Fig. 12).
Release latch and press bobbin case firmly in place to
assure proper position. Close bed slide.
Fig.9. rig.10.
12.THREADING THE NEEDLE 13.TO ADJUST STITCH LENGTH
Regulating the stitch length:
To regulate the stitch length, tum feed regulating dial (1)
Fig.17, toward left or right as required.
+...... 70 lengthen
-...... 10 shorten
Changing to reverse feed:
Push fever {2),Fig.17.down for reverse feed and release
for forward feed.
To regulate the reverse stitch length, tum thumb screw
{3)Fig.17, toward ‘eit or right as required.
+...... 10 lengthen
-...... To shorten
14.TO ADJUST PRESSER FOOT PRESSURE
+ Fig.16.
1
Switch off the machine.
Do not operate without thread take-
up guard.
Do not operate without finger guard
Danger of injury!
1.Lead thread from the thread unwinder through ali the
threading points A (Fig.14),B (Fig.15), C (Fig.13),
D {Fig.13}),E (Fig.13) and F (Fig.18) in the order shown. To regulate the presser foot pressure, turn knurled
2. Thread the needle from front to back, as shown in thumb screw (1), Fig.18, toward left ro right as required.
Fig. 16. +......More pressure
3.Draw about 3 inches of thread through eye of needle. -......Less pressure
15.70 ADJUST NEEDLE THREAD TENSION
Fig.19.
Regulate needle thread tension withn tension regulating
knob (1), Fig. 19.
+. More tension
-......L.ess tension
16.REGULATING THE TAKE-UP SPRING
Using a screwdriver in stot of stud (1}, Fig.20, regulate take-
up spring tension by turning stud (1), as required.
To adjust the amount of take-up spring movement, toosen
screw {2}, Fig.20, and set take-up spring height by turning
the entire tension assembly (3) toward left or nght, as
required. Securely tighten screw (2).
17.TO ADJUST BOBBIN THREAD TENSION
Fig.21.
Reguiate bobbin thread tension with tension regulating
screw (1), FIg.21.
Fun More tension
ee Less tension
18. NEEDLE POSITION SELECTOR
Fig.22.
CAUTION
Switch off the machine.
Left, Center and Right needie position settings are
available for placement of both straight and zigzag
stitching {see Fig.22).
To position, push lever in and move to desired setting.
Do not make any needle position adjustment while the
needle is in the fabric.
19.8TITCH WIDTH REGULATOR
Fig.23.
The width of zigzag stitch is controlled with the spring
biased stitch width regulating tever(1},Fig.23.
Maximum zigzag width;
20U73/738 0-9 mm
20U83/83B8 0-12 mm
Do not make any needie position adjustment while the
needle is in the fabric.
20.HOW TO CONTROL THE WIDTH OF ZIGZAG
STITCH
Y
fy
Fig.24.
21.NEEDLE BAR FRAME CLAMPING DEVICE
\ Release
Fig.25.
To obtain minimum to maximum width (20U73/73B:9mm.
20U83/83B:12mm) zigzag stitches, first toosen thumb
screw (2},Fig.24. to permit the stitch width regulator (3),
Fig.24 to return to its zero position (see A, Fig.24) and
retighten thumb screw (2).
Then loosen thumb screw (1),Fig.24. turn stitch width
regulator {3) clockwise as far as it will go and while
holding the regulator (3) in this position {see B,Fig.24),
retighten thumb screw (1).
You can now regulate the stitch width reguiator within the
range of zero to maximum.
CAUTION
Switch off the machine,
When straight stitching, a better sewing result can be
obtained by locking the needle bar frame immovable with
the clamping device (see Fig.25).
A; Clamp
B: Release
22. FITTING FOR STRAIGHT AND ZIGZAG
STITCHING
606652(20U73/738)
606402(20U83/838B)
2
606688(20U73/73B)
606502(20U83/83B)
606650(20U73/73B) q
Fig.26.
606651(20U83/83B)
606695
606693 606697
Fig.27.
CAUTION
Switch off the machine.
1.Open bed slide, then remove throat plate. (Use
screwdriver (3) Fig.28, furnished with machine for
removal and replacement of throat plate and feed
dog.)
2.Using a screwdriver {2}, remove bed plate (1) and
remove feed dog (4) (see Fig.28).
3.To replace general prupose or straight stitch feed dog,
fasten feed dog to machine temporarily and replace
general purpose or straight stitch throat plate. Set
feed dog correctly in position so that it will not hit the
edges of feed dog slots in the throat plate.
4.Replace bed plate and press it firmly in place.
24.TO MOUNT THREAD UNWINDER
General Purpose Presser Foot (1). Throat Plate (2) and Feed
Dog (3) as shown in FFig.26, are used for straight and zigazg
stitching.
Straight Stitch Presser Foot (1), Throat Plate (2) and Feed
Dog (3) as shown in Fig.27, are used for straight stitching
only.
23.CHANGING THE THROAT PLATE AND FEED DOG
Fig.29.
Fasten thread unwinder (1) to table (2) with wood screws
(3) as shown in Fig.29.
25.TO USE THE SPOOL CAP
Fig.30.
When using a reel type thread spool fit the spool cap {1)
supplied with the machine onto the thread spool (3)
(see Fig.30).
Set height of spool rest so there is approximately 2 mm
clearance between top end of spool pin and the tip of the
slotted spigot of the spoot cap (see Fig.30).
The spool cap should never be fitted on the spool pin (5).
Forcing it onto the spool pin may result in breaking the
slotted spigot of the spool cap (see Fig.30).
26.TO USE THE ANTI-SPILL SLEEVE
Fig.31.
When using synthetic threads that easily spili off the cone
(1), slip the anti-pill sieeve (2} furnished with the machine
over the thread from the bottom of cone (1) leaving the
thread end to hang free at the top of anti-spill sleeve (2) as
shown in Fig.3*.
27.KNEE LIFTER
TO MOUNT KNEE LIFTER
145mm
Fig.32.
Fasten knee lifter bracket (1) to underside of table {2)
145 mm from table cut-out as shown in Fig.32.
KNEE OPERATING PRESSER FOOT LIFT
Switch off the machine.
Set sewing head upright again
using both hands.
Danger of crushing between sewing
head and table top.
‚10.
Beli.cranks (1) and (2) shown in Fig.33 are fastened to the
underside of the bed. Beli crank (1) is used for lifting and
lowering the presser foot with knee, and bell crank (2) is
used for controlling the stitch width (see Fig.33).
To raise or lower the presser foot with knee, loosen
screw {4) holding the knee ligter shaft arm (3) and move
knee lifter shaft arm (3) just under the bell crank (1), and
Hirmly tighten screw (4) (see Fig.33).
Loosen the iock nut holding screw (7} and turn screw (7)
as required, so that the bent end {6) of knee lifter shaft
arm (3) will be alomost horizontal when knee lifter knee
plate (5) is pushed as far as it will go in the direction
indicated with arrow (A), then firmly tighten the lock nut
(see Fig.33).
With knee lifter shaft arm (3) set in position as described
above, loosen screw (8) and move knee lifter shaft arm (3)
up op down as required, so that height {10} from its bent
end (6) to bracket (9) 1s 64 mm {see Fig.33).
Raise presser foot (12) with presser foot lifter (11). Then
toosen the lock nut holding screw {14) and turn screw (14)
as required, so that knee lifter knee plate (5) when pushed
in the direction indicated with arrow (B), will stop at a point
(presser foot (12) raised approx. mm from throat plate
(13) surface ) where presser bar lifter {11} will drop down
from its raised position when presser bat is lifted a little
higher than its normal up position, Then firmly tighten the
lock nut (see Fig.33).
When knee lifter knee plate (5) is pushed in ihe dirction
indicated with arrow {B), the presser foot {12) will rise and
when knee plate (5) is released, presser foot (12) will be
lowered (see FIg.33).
KNEE OPERATING STITCH WIDTH CONTROL.
12
‚11.
CAUTION
Switch off the machine,
Set sewing head upright again using
both hands.
Danger of crushing between sewing
head and table top.
Beli cranks (1) and (2) shown in Fig.34 are fastened to the
underside of the bed. Bell crank (1) is used for lifting and
lowering the presser foot with knee and bell crank (2} is
used for controlling the stitch width.
To contro! the stitch width with knee, ioosen screw (4)
holding the knee figter shaft arm (3) and move knee lifter
shaft arm (3) just under the bell crank (2) and firmly tighten
screw (4) (see Fig.34).
Loosen the lock nut holding screw (7) and turn screw(7) as
required, so that the bent end (6) of knee lifter shaft arm (3)
will be aimost horizontal when knee lifter knee plate (5) is
pushed as far as it will go in the direction indicated with
arrow (А). Then firmly tighten the jock nut {see Fig.34).
With knee lifter shaft arm (3) set in position as described
above, loosen screw (8) and move knee lifter shaft arm (3)
up or down as required, so that geight (10) from its bent
end (6) to bracket is 67 mm (see Fig.34).
Loosen stitch width regulating plate thumb screws (11)
and (12) so that stitch width reguiator (13) can be moved
from zero to maximum stitch width.(20U73/73B:9mm,
20U83/83B: 12mm) (see Fig.34). Loosen the lock nu:
holding screw (14) and tum screw (14) as required, so that
knee lifter knee plate (5) when pushed in the direction
indicated with arrow (B), will stop at the maximum stitch
width position of stitch sidth regulator (13). Then firmiy
tighten the lock niut (see Fig.34).
Stitch width will become wider when knee lifter knee piate
(5) is pushed in the direction indicated with arrow (B} and
will become smaller when knee plate is released (see
Fig.34).
28.FITTINGS FOR BUTTONHOLE STITCHING
606652(20173/73B)
606402(20U63/83B)
| 606688(20U73/738) _,
606692(20U75/73B/83/83B) | 606502(20U83/838) iQ. 35.
CAUTION
Switch off the machine.
Buttonhole Foot {1),General Purpose Throat Plate (2) and
Feed Dog (3) as shown in Fig.35 are used for buttonhoie
stitching.
29.FITTING FOR HEM SEWING
410192 543979
541937-452
2
Fig.36.
CAUTION
Switch off the machine.
Hemmer Foot (1), Straight Stitch Troat Plate (2) and Feed
Dog (3) as shown in Fig.36 are used for hem sewing.
30. FITTINGS FOR ZIPPER AND CORD SEWING
606652(20U73738)
606402(20U83838)
2
606688(20U73/73B)
606502(20U83/83B)
A
606697
5
606691
Switch off the machine.
Zipper Foot {1}, General Purpose (2) or Straight Stitch (3)
Thorat Plate and General Purpose (4) or Stright Stitch (5)
Feed Dog as shown in Fig.37 are used for zipper and cord
sewing.
31.CARING FOR YOUR MACHINE
10 Fig.38.
CAUTION
Switch off the machine.
Set sewing head upright again using
both hands.
Danger of crushing between sewing
head and tabie top.
Your SINGER machine will serve you perfectly for many
years if you take a few moments of your time to keep it
clean. How often you will need to clean and lubricate the
machine will depend on how often you will use it.
When in regular use, the machine should be cleaned
periodically to remove tint and fluff which may have
accumulated around the working parts. A machine in
continuous use should be oiled frequently, especially when
the machine is operated at maximum recommended
speed,
With a soft cloth, clean; {See Fig.38)
{1)Thread retainer
{2)Take-up lever
(3)Thread guard
(4)Tension dises
{5)Needie bar
(6)Presser bar
(7)Machine arm and bed
With a lint brush, clean; {See Fig.38)
(9)Feed dog
(10)Rotating hook and area under throat plate.
Turn hand wheel! over toward you until oit hoie in
rotating hook appears in sight.
Apply one or two drops of oil to the oii hole.
12.
32. TROUBLESHOOTING CHART
Whenever sewing difficulty is encountered, check and make adjustments as follows.
Problem
Cause
Solution
Needle thread
breaks
1.15 machine properly threaded?
2.Are thread guides or tension disc area lint-free?
3.1s needle-thread tension too tight?
4.1s needle bent or have a biunt point?
5.1s needie inserted correctly?
6.1s needle the correct size for thread and fabric?
7.18 thread free of slubs and knots?
1.Correct needle threading
2.Remove lint and fluff in bobbin case and
hook
3.Adjust needle thread tension
4.Insert new needie
5.insert needle correctly
6.Select proper needle size and thread
7.Remove slubs and knots
Bobbin thread
breaks
8.1s bobbin threading correct?
9.1s thread tangled or caught?
10.1s thread tension correct?
11.Does bobbin rotate smoothly?
8.correct boobin threading
9 Untangie thread from bobbin case and
hook
10.Adjust needle and bobbin case thread
tension
11.Check whether bobbin thread is wound
correctly
Stitches skip
12.1s needle inserted correctly?
13.1s needle bent or have blunt needle point?
14.Is size of needle and thread suitable for fabric?
15.1s threading correct?
12.Insert needle correctly
13.Insert new needle
14.Select proper needle size and thread
15.Correct needie threading
Needle breaks
16.1s needie properly inserted?
1738 needie bent?
18.1s needle the correct size for the fabric?
19.1s needle clamping screw loose?
20.1s the fabric pulled while sewing?
16.Insert needie correctly
17.insert new needie
18.Select proper needie and thread for fabric
19.Tighten needle set screw
20.Do not pull fabric while sewing
Fabric faits to
feed
21.1s feed regulating dial properly adjusted?
22 1s presser foot pressure adjusted properly?
21.Lengthen stitch length by feed regulating
dial
22.Adjust correct presser foot pressure
Fabric puckers
23.1s needle threading correct?
24.18 needle point blunt?
25.15 thread tension too tight?
23.Correct needle threading
24.1nsert new needle
25.Adjust needle tension property
Rotating heavy
Noisy
26.15 there any lint or fluff on feed dog?
27.18 there any lint in rotating hook?
26.Remove lint and fluff from feed dog
27. Remove lint and fluff from rotating hook
Machine fails to
start
28.Are electrical plugs properly eonnected?
29.1s power and light switch turned on?
28.Turn on power switch
23.Connect plug to power source
if you still have difficulty in sewing even after making adjustments,
‚13.
contact your nearest Service Center.
33.SPECIFICATIONS
Machine class 73/738 83/838
For sewing Light to medium
Stitch type 301 (lock stitch), 304 (Zigzag lock stitch)
Max. speed” 2,500 r.p.m. 2,000 r.p.m.
Max.stitch bight 9.0mm 12.0mm
Max.stitch length 5.0mm 5.0mm
Needle bar stroke 34.8mm
Presser bar lift (manual) 6.35mm
Presser bar lift 9.0mm
(knee lifter)
Needie catalo
J CAT.1910-05 (135X9)
(needle system)
Needle size See page 3 table “NEEDLE AND THREAD”
Machine puiley
74mm effective dia. for V-belt
Oil SINGER “B” Oil
Workispace width 211mm
Workspace height 130mm
Bedplate dimensions 399mm X 178mm
Net weight (head only) 19.5Kg 20.0Kg
Gross weight
9 21Kg 21.5Kg
(with accessories)
Noise”* n=1,600 r.p.m. <76 dBA
* Mzximum speed will vary depending on fabric, threads and sewing condition.
** Noise mesurment according to DIN 4563-45-A-1.
Relationship between zigzag bight and maximum speed
Machine class 73/73B 83/83B
Zigzag bright Omm-5mm 5mm-9mm Omm-5mm 5mm-12mm
Max. speed 2,500 r.p.m 2,000 r.9.m 2,000 r.p.m 1,800 r.p.m
Part No. 606625(1100)
Printed in China
‚14.
FACE PLATE, ARM TOP COVER, ARM SIDE COVER
AL
4
6 2
NO. | PART NO. | U73 |JU73B| U83 (US83B | QTY. DESCRIPTION
1 554113-383 * * * * 1 Thread Take-up Guard
2 606407 * * e % 1 Take-up Guard Screw
3 606395 * + 1 Face Plate Comp.
606395-460 * * |
4 606632 * * + * i Thread Guide
5 606633 * + E * Ï Thread Guide Screw
6 606634 * * * * 2 screw
7 554118-385 * * } ВасК Соуег
554118-362 * * }
8 606635 * * * * 4 Screw
9 606433 + * 1 Arm Top Cover Comp.
606433-460 + + 1
10 606636 + E % * 1 Thrust Washer
11 606454 + * * * 1 B/W Bracket Comp.
12 606637 * * Е * 1 Spring
13 606638 * * + * 1 Friction O-ring
14 606452 % * * * 1 B/W Regulating Plate
15 606453 + * * * I Spring
16 606449 * * E * I Spring
17 606451 * * + * 1 Hinge Stud
18 606439 * * * * I Set Screw
19 550032 * * + * I B/W Lever Comp,
20 544208-005 * * * * I B/W Lever Set Screw
21 606447 * * # + 1 B/W Lever Stud
22 606448 * * * + 1 B/W Lever Stud Ring
23 606446 * * * * 1 B/W Regulator Comp.
24 544208-005 * * * * 1 B/W Regulator Screw
25 606639 * * * + 1 B/W Tension Comp.
26 606440 * * * * 1 Bobbin Winder Tension Stud
27 606442 * + * * I Bobbin Winder Tension Spring
28 606441 * * * + 2 Bobbin Winder Tension Disc
29 606443 * * * x 1 Tension Nut
30 606439 * * * + 1 Screw
31 606602 * * * * 2 Arm Top Cover Screw
32 606398 * + * * 1 Eccentric Lock
33 606397 * * * * 1 Eccentric Screw
34 554128 * * * * 1 Stopper pin
35 554144 * * * * 1 Stopper Spring
36 544212-001 + * + * 1 Stopper Screw
37 606555 * * * * I Screw (Earth)
38 606571 * * * * 1 Washer (Earth)
THREAD TAKE-UP, ARM SHAFT, HAND WHEEL
5
10
de. g 16
Tel || P=.
eo”
NO. PART NO. | U73 U73B; U83 {U83B| QTY. DESCRIPTION
1 606640 * * + * 1 Take-up Comp,
2 606475 + * * * 1 Take-up
3 606474 * * + * 1 Take-up Eyelet
4 606641 + * * + 1 Take-up Lever Link
5 606471 * * * * 1 Conn.Link Cap Screw
6 606642 * * * 1 N/B. Connecting Link Comp.
7 606472 * * * * 1 N/B. Connecting Link
8 606466 + * + * 1 Connecting Stud Comp.
9 606468 * * * * 1 Set Screw
10 | 606464 * * + * 1 Hinge Pin Screw
11 606467 * * * * 1 Hinge Pin
12 606465 + + * + 1 Pin Washer
13 606473 * * * * I Take-up Crank
14 : 606643 % % * * 1 Hinge Stud
15 606420 * * * * 1 Set Screw
16 | 606469 * * * + 1 Guide
17 | 606444 + + * * 2 Screw
18 | 606644 * * * + 1 Arm Shaft and N/B Crank Comp.
19 606484 * * * * } Arm Shaft
20 696478 * % * * 1 N/B. Crank Comp.
21 600477 * * * + 1 N/B Crank Posn.Screw
22 504066 * * * * 1 Position Screw
23 | 504101 * * * * Ï Crank Posn, Screw
24 606480 * * * + 1 Bushing Set Screw
25 | 606481 * * * * 1 Front Bush
26 | 541606 * * * * 1 Bevel Gear Comp.
27 504066 * * * 2 Bevel Gear Set Screw
28 | 541607 * * * + 1 Worm Gear Comp.
29 504028 * * * + 2 Worm Gear Screw
30 606483 * * * * 1 Feed Eccentric Comp.
31 606482 * * * * 1 Feed Eccentric Screw
32 606482 * * * + 1 Feed Eccentric Serew
33 606645 * * * * 1 Retaining Ring
34 | 606480 * * * * 1 Arm Shaft Bushing Screw
35 1 606485 % * * * 1 Arm Shaft Bushing, back
36 | 606487 * * * * } CSM Flanged Bushing
37 1606488 * * * * Ï CSM Bushing Set Screw
38 505009 * * * + 1 CSM Ciamp Washer
39 | 415763-383 * * * * 1 CSM Clamp Screw
40 154756 * * * * 1 CSM Clamp Stop Screw
43 606489 * + * * 1 Handwheel
42 | 606712 * + * * 1 Retaining Collar comp.
43 | 606713 * + * * 2 Rectaining Collar screw
no
NEEDLE BAR, PRESSER BAR, THROAT PLATE
33
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NO. | PART NO. | U73 U73B U83 [U83B| QTY. DESCRIPTION
{ 606640 + % 1 Needle Bar
2 606461 + a 1 Needie Bar
3 606463 * * * + 1 Needle Clamp Screw
4 606647 * + * 1 Needle Bar Frame Comp,
5 600456 + * * % 1 Needie Bar Frame
6 606458 % * + # i Indicator Plate
7 606459 * * E * 2 Indicater Plate Screw
8 606457 + Es + * 1 Ecc. Pin Set Screw
9 606516 # + + * 1 Set Screw
10 606460 * % ES * ] N/B Frame Pin
11 600462 x + + * 1 Needle Bar Tread Guard
12 N1910-0514 + % # * 1 Needle(size #14)
13 606648 x + * * ] P/B Thumb Screw & Nut Comp.
14 606592 > * * e 1 Presser Bar Thumb Screw
15 600049 * * = * I Presser Bar Thumb Screw Nut
16 606594 * % * # 1 Presser Bar
17 606593 * * * * 1 Presser Bar Spring
18 606666 + + * + 1 Presser Bar Bracket Comp.
19 606599 * * * * 1 Screw
20 606601 + + * + 1 Presser Bar Lifting Bracket
21 606650 + + 1 Presser Foot Comp,
606651 * + I Presser Foot Comp.
22 606444 * + * È Presser Foot Screw
23 606652 # Æ 1 Needie Plate
606402 + 1 Needle Plate
24 606403 * * * * 2 Needle Plate Screw
25 606653 + * % > 1 Bed Plate Comp.
26 606404 * * * ] Bed Plate
27 606405 * * + * i Bed Plate Spring
28 606401 * + * e 2 Bed Plate Screw
29 606654 * * * + 1 Slide Plate Comp.
30 606399 * * * * I Slide Plate
31 606400 * * * * 1 Slide Plate Spring
32 606401 + + + + 2 Slide Plate Spring Screw
ZIGZAG TRIANGULAR CAM, HOOK ADVANCING CRANK
23
>18 > 47
NO, PART NO. | U73 |U73B| U83 |U83B| QTY. DESCRIPTION
1 606420 * + + * } Set Screw
2 606539 + * * * 1 Cam Shaft Comp.
3 606655 * * * * 1 Cam Shaft
4 606656 * * * * 1 Cam Shaft Oil Wick
5 410031 + * 1 Zig Zag Cam and Gear Comp.
410056 * * i Zig Zag Cam and Gear Comp,
Ó 606542 + * * * I Cam Shaft Collar Comp.
7 606541 * + + 2 Collar Set Screw
8 606444 + * + + 2 Screw
9 606590 * * * * 2 Spring Washer
10 606589 + * * * 2 Washer
Н 606588 * * * 1 Qil Feit
В 696657 + + 1 Oil Reservoir Comp.
606586 * * 1 Oil Reservoir Comp.
13 606658 + * 1 Oil Wick
606587 * + 1 Oil Wick
14 606659 * + i Oil Reservoir Bracket
Es 606660 * + 1 Set Screw
16 606584 + * 1 Set Screw(Fron1)
17 606661 * + 1 Hook Advancing Bracket Comp.
18 606581 * * 1 Hook Advancing Crank Bracket
19 606559 + + 1 Set Screw
20 606580 + + 1 Hook Advancing Crank Shaft
21 606579 * * } Hook Advancing Crank
22 606578 * * 1 Snap Ring
23 606662 * * 2 Sef Screw
24 606584 * * 1 Spring Support
25 606544 * * 1 Hook Advancing Crank Link
26 606550 * * 1 Hinge Screw
27 606543 * * 1 Hinge Screw
28 606663 + * 1 Zig Zag Stitch Reg. Fork
606538 + * i Zig Zag Stitch Reg. Fork
29 606545 + * * * i Fork Eccentric Connection Pin
30 606664 + * Î Slide Block Cap Screw
BIGHT AMPLITUDE, BIGHT AND L-C-R POSITION
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37 27
NO. PART NO. | U73 U73B! U83 !US3B | OTY DESCRIPTION
i 606511 * * + * 2 Screw
2 606571 + * * * 2 Washer
3 606569 * + * + 2 Stop Plate
4 606554 * * * * 2 Lever Arm Reg. Screw Nut
5 606553 * + + * 2 Lever Arm Reg.Screw
6 606572 * * * * 2 Screw
7 606577 # + * * ] Spring
8 606575 * + * * ] Regulating Plate, left
9 606576 * + * * ! Regulating Plate, right
19 606574 # + * * ] Reg.Plate Holder
1} 606573 * + * * 2 Thumb Screw
12 606556 * + + * ] Spring
13 606665 * + ] Bight Amplitade Control Mech, Comp.
606666 * * ! Bight Amplitude Control Mech. Comp.
14 606667 + * ] Slide Block & Guide Comp.
606665 * * | Slide Block & Guide Comp.
15 606546 * * + * | Slide Block
16 606669 * # ] Slide Block Guide Comp.
606547 * + ] Slide Block Guide Comp.
17 606670 * * * | Guide Stud Set Screw
18 606557 * * + + | Slide Block Crank Comp.
19 606555 * * * * 2 Slide Block Crank Set Screw
20 606549 * * * * } Slide Block Crank Link
21 606671 + * * * 2 Hinge Screw
22 606551 + * * * i Position Lever Arm
23 606552 * * * * | Guide Stud
24 606560 + * * * | Collar Comp.
25 606518 + * * * 2 Collar Set Screw
26 606562 * * * * 1 Crank Shaft Bushing
27 554139-383 * * * * } Crank Shaft Knob Comp,
28 606564 * * * * 2 Position Block Screw
29 606568 * * * * 2 Position Block Screw Washer
30 606673 + * ] Position Block
606563 * * ] Position Block
31 600674 * + * * 2 Position Lever Screw
32 606566 * + * * ] Position Lever Comp.
33 606565 * + * * 1 Position Lever Screw Pin
34 606675 + + + * Position Lever Screw Pin Nut
35 606675 * * * * | Thumb Stud Nut
36 606676 + * * * | Thumb Stud Spring Washer
37 554140-383 * *” * * 1 Thumb Stud
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ARM SHAFT (UPRIGHT), ROTATING HOOK DRIVE SHAFT
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NO. [PART NO. | U73 |U73B] U83 |U83B | QTY. DESCRIPTION
1 541610 * 1 Bevel Gear Comp.
2 504101 * * 2 Bevel Gear Set Screw
3 606677 * * i Arm Shaft Bushing, upper
4 606678 * * H Arm Shaft (Upright)
5 606527 * * * * 1 Upright Bushing, lower
6 541609 * * 1 Bevel Gear Comp.
7 504101 + * 2 Bevel Gear Set Screw
8 606585 + * 1 Connection Screw
9 606536 * * ] Hook Advance Crank Connecting Rod
10 606535 + * 1 Bevel Gear
i1 606533 + + 1 Upright Bushing, upper
12 606534 * + * * 1 Bushing Set Screw
13 606679 + * 1 Clutch Sleeve Comp.
14 504101 * * 2 Clutch Sleeve Screw
15 504101 * * 2 Clutch Sleeve Screw
16 606528 + * 1 Connecting Stud
17 606523 * * 1 Retaining Collar Comp.
18 504101 * * 2 Retaining Collar Screw
19 543914 * * 1 Screw Gear Comp.
20 504101 * + 2 Gear Set Screw
21 606537 * * 1 Arm Shaft (Upright) Comp.
22 606680 * * 2 Arm Shaft Oil Wick
23 541684 * * 1 Bevel Gear Comp.
24 543944 + * 1 Screw Gear Comp.
25 504101 * * * + 2 Screw Gear Set Screw
26 606681 * * 1 Hook Drive Shaft Bushing
606525 * 1 Hook Drive Shaft Bushing
27 606420 * * * ‘1 Set Screw
28 606523 * * 1 Retaining Collar Comp.
606523 + + 2 Retaining Collar Comp.
29 504101 * * 2 Retaining Collar Screw
504101 * * 4 Retaining Collar Screw
30 606682 * * 1 Hook Drive Shaft
606526 * * 1 Hook Drive Shaft
31 606522 He + * * 1 Hook Drive Shaft Bush
32 606420 + * * * 1 Set Screw
33 541685 * * * * 1 Bevel Gear Comp.
34 504101 * * * * 2 Bevel Gear Screw
35 006523 * * 1 Arm Shaft (Upright) Collar Comp.
36 504101 * * 2 Arm Shaft (Upright) Collar Screw
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HOOK, BOBBIN CASE
16
15
NO. PART NO. | U73 |U73B | U83 {U83B| QTY. DESCRIPTION
1 606517 * * * * 2 Hook Shaft Collar Comp.
2 606518 * + * * 4 Hook Shaft Collar Screw
3 606516 * * + * 1 Set Screw
4 606519 * * * + 1 Hook Shaft Bush, short
5 541689 * * * * 1 Bevel Gear Comp.
6 504101 * * * * 2 Bevel Gear Screw
7 606516 * * * * 1 Set Screw
8 606515 * + * * 1 Hook Shaft Bush, long
9 606520 * * * * 1 Hook Shaft
10 606410 * * * * 1 Gear Shield
11 606444 * * * * 1 Screw
12 606513 + * * * 1 Bobbin
13 606683 * * 1 Rotating Hook Comp.
606514 * * 1 Rotating Hook Comp.
14 606684 * * * * 2 Rotating Hook Set Screw
15 606512 * * * * 1 Bobbin Case Comp.
16 606510 * + * * 1 Hook Position Finger
17 606511 * * * * i Position Finger Screw
PRESSER BAR LIFTER, TENSION
8 — A
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23
PA 18.
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6
NO. [PART NO. | U73 (U73B! U83 |U83B| QTY. DESCRIPTION
1 606598 * * * * 1 Hand Lifter Lever
2 600597 + * * * 1 Hand Lifter Lever Pin
3 606599 * * * * 1 Screw
4 606413 * + * * 1 Tension Release Lever
5 606412 * * * * 1 Tension Release Lever Screw Spring
6 606411 * * + * Tension Release Lever Screw
7 410413 * * * * 1 Thread Retainer
8 606518 * * * * 1 Thread Retainer Screw
9 606416 * * * * } Thread Guide
10 606444 * * * * } Thread Guide Screw
11 606414 * * * * 1 Thread Guard Pin
12 606689 * * * * } Tension Comp.
13 606425 * * * * 2 Tension Disc
14 606426 * * * * 1 Tension Releasing Disc
15 606418 * * * * } Tension Release Pin
16 606427 * * * * 1 Tension Spring
17 606422 * * * * 1 Thread Take-up Spring
18 606419 * * * * 1 Tension Base Comp.
19 606421 * * * * 1 Tension Securing Screw
20 606424 + * * * 1 Tension Stud
21 606429 * * * * i Thumb Nut
22 606428 * * * * 1 Thumb Nut Washer
23 600420 * * * * 1 Set Screw
24 606607 * * * * I Lifting Lever
25 606608 * * * * 1 Hinge Screw
26 606605 * * * * 1 Connecting Rod
27 606604 * * * * 2 Connecting Rod Pin
28 606606 * * * + 1 Connecting Rod
29 606604 * * * * | Connecting Rod Pin
30 606603 * * * * i Bell Crank Comp.
31 606602 * * * * 2 Screw
—
D
ACCESSORIES AND ATTACHMENT 1
NO. [PART NO. | U73 \U73B| U83 |U83B | QTY. DESCRIPTION
1 6060990 * * * * 1 Accessory Box
2 N1910-0514 * * * * 3 Needle (Size #14)
3 606691 * * * * 1 Zipper Foot
4 606692 * * * * 1 Presser Foot Comp. (for Button Holing)
5 606693 * * * * 1 Presser Foot Comp. (for Straight Stitching)
6 600694 * * * * 1 Hemmer Foot Comp.
7 606095 * * * + 1 Needle Plate (for Straight Stitching)
3 606696 * * * * 1 Needle Plate (for Embroidery)
9 606697 * * * * 1 Feed Dog (for Straight Stitching)
10 606513 * * * * 2 Bobbin [|
il 606698 + * * * 1 Oiler
12 606699 * * * * 1 Machine Rest Pin
i3 606700 * * * * 1 Screw Driver{large)
14 606701 * * * * 1 Screw Driver(Smail)
15 606702 * * * * 1 Screw Driver(for Needie Plate)
16 606703 * + * * 2 Thread Unwinder Spool Cap
17 606704 * * * * 2 Thread Unwinder Spool Net
i8 606705 * * * * i Thread Unwinder Comp.
19 606766 * * * * 1 Drip Pan
20 606707 * * * x 4 Drip Pan Nail
21 606708 * * * * 1 Knee Lifter Comp,
22 606709 * * * * 2 Machine Hinge
23 686710 * + * * 2 Machine Hinge Cushion
24 666711 * * * * 4 Machine Cushion
25 606707 * * * * 6 Nail
11.
PARTS AVAILABLE AT EXTRA CHARGE
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14
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NO. ¡PART NO. | U73 ¡U73B| U83 ¡US3B | QTY. DESCRIPTION
1 281840-383 * * * * 1 Belt Guard Comp.
2 281833-383 * * * * 1 Belt Guard (Upper)
3 281834-383 * * * * 1 Belt Guard (Upper) Cover
4 549116 * * * + 1 Belt Guard (Upper) Screw
5 504063-451 + * * * 2 Belt Guard (Upper) Screw
6 543875-104 * + * * 2 Belt Guard (Upper) Screw Washer
7 544241 * * * * i Belt Guard (Upper) Screw Stud
8 281835-383 * * * * 1 Belt Guard (Lower)
9 549398 * * * * 2 Belt Guard (Lower) Wood Screw
10 543803-003 * * * * 2 Belt Guard (Lower) Wood Screw Washer
H 541515-001 * * * + 1 Cloth Guide
12 504030 * * * * 1 Cloth Guide Thumb Screw
13 281822 * + + * 1 Finger Guard
14 410076 * * 1 Needle Plate Comp. (for Embroidery)
12.
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