UnionSpecial 43500 Series Instruction sheet

®
F INE ST QUALITY
ST YLES
435000
43500F
43500L
CATALOG
No.
134M
Second
Edition
C 0 L U M 8 I A®
CLASS 43500
HI- S TYLED HIGH SPEED
S INGLE CURVED NEEDLE
PLAIN FEED MACHINE S
INDUSTRIAL
SEWING
MACHINES
UNION SPECIAL CORPORATION
C H ICAGO
From the library of: Superior Sewing Machine & Supply LLC

C a t a 1 o g No. 1 3 4 M
INSTRUCTIONS
FOR
ADJUSTING AND OPERATING
LIST OF PARTS
CLASS 43500
Styles
43500 D 43500 F
43500L
Second Edition
@ 1969
By
Union Special Corporation
Rights Reserved in All Countries
UNION SPECIAL CORPORATION
INDUSTRIAL SEWING MACHINES
CHICAGO
Printed in U.S. A.
2
March, 1976
From the library of: Superior Sewing Machine & Supply LLC

IDENTIFICATION OF MACHINES
Each UNION SPECIAL machine is identified by a Style number on a name plat e
on the machine. Style numbers are classified as standard and special. Standard
Style numbers have one or more letters suffixed, but never contain the letter "Z".
Example: "Style 43500 F". Special Style numbers contain the letter "Z". When only
minor changes are made in a standard machine, a ''Z" is suffixed to the Standard
Style number. Example: ''Style 43500 FZ".
Styles of machines similar in construction are grouped under a Class number
which differs from the Style number in that it contains no letters. Example: "Class
43500".
APPLICATION OF CATALOG
This catalog applies specnically to the Standard Styles of machines as listed
herein. It can also be applied with discretion to some Special Styles of machines in
Class 43500. References to directions, such as right, left, front, back, etc., are
given from the operator's position while seated at the machine. Operating direction
of handwheel is away from operator.
STYLES OF MACHINES
Hi-Styled High Speed Plain Feed Single Curved Needle, Medium to Heavy Duty
machine, with Single Enclosed Reservoir for Automatic Lubrication.
43500 D For seaming canton flannel and jersey cloth gloves and similar operations
on medium to heavy weight materials. Seam specification 401-SSa-1. Stitch
range 6 to 12 per inch. Cam adjusted feed. Maximum recommended speed 6500
R.P.M.
43500 F For seaming trousers, coats, jackets, dresses and similar garments.
Seam specification 401-SSa-1. Stitch range 8 to 14 per inch. Cam adjusted
feed. Maximum recommended speed 6500 R. P.M.
43500 L For side seaming trousers, etc., with yielding section on left side of
presser foot. Seam specification 401-SSa-1. Stitch range 8 to 14 per inch.
Cam adjusted feed. Maximum recommended speed 6500 R. P. M.
OILING
CAUTION! Oil was drained from machine when shipped, so reservoir must be
filled before beginning to operate. Oil capacity of Class 43500 is six ounces. A
straight mineral oil of a Saybolt viscosity of 90 to 125 seconds at 1000 Fahrenheit
should be used.
Machine is filled with oil at spring cap in top cover. Oil level is checked at
sight gauge on front of machine. Red bulb on oil level indicator should show be-
tween gauge lines when machine is stationary.
Machine is automatically lubricated. No oiling is necessary, other than keeping
main reservoir filled. Check oil daily before the morning start; add oil as required.
The oil drain plug screw is located at back of machine near bottom edge of base •
It is a magnetic screw designed to accumulate possible foreign materials which
may have entered the crank case. It should be removed and cleaned periodically.
NEEDLE
Each UNION SPECIAL needle has both type and size number. The type number
denotes the kind of shank, point, length, groove, finish and other details. The size
number, stamped on the needle shank, denotes largest diameter of blade, measur ed
in thousandths of an inch, midway between shank and eye. Coll e ctively, type and
size number represent the complete symbol which is given on the label of a ll
needles packaged and sold by Union Special.
3
From the library of: Superior Sewing Machine & Supply LLC

li] Tcnslon Nul
IIT cnslon s,,r t n ~
[!)T ension PoRI
ll) sp rlng Shlt· ld
gT, •ns!on msc ~ ...,.. . ~~~~If}
IIT<>n sion P os t Slot ~ •..
OTcn slon Di sc Felt·.. •.- ~ -:.."'.:~
Iii Tension Thre ad G uide
fl1 Fran • Thre ad Gui de
IIJ Looper Thre a d E y elet
Iii Looper Thread Pull-off
CJ Needle-----
Fig. 1
THREADING DIAGRAM AND OILING INSTRUCTIONS FOR CLASS 43500
Only parts involved in threading are shown in the above diagram. Thread machine
as indicated.
It will simplify the threading to follow the recommended sequence of threading
the looper first and the needle second.
No oiling is necessary other than keeping the red bulb between the lines on the
oil gauge on the front of the machine. Machine is filled with oil at the spring cap in
top cover.
A straight mineral oil of aSaybolt viscosity of 90 to 125 seconds at 100° Fah-
renheit should be used.
4
From the library of: Superior Sewing Machine & Supply LLC

NEEDLE (Continued)
Class 43500 machines use a curved blade needle. The standard recommended
needle is Type 157 GJS. Below is the description and sizes available of the recom-
mended needle.
Type No.
157 GJS
Description and Sizes
Round shank. round point. curved blade. flat tapered blade. Class
A. double groove. struck groove. long spot. government point.
chromium plated and is available in sizes 080/032. 090/036.
100/040. 110/044. 125/049.
To have needle orders promptly and accurately filled, an empty package. a
sample needle, or the type and size number should be forwarded. Use description
on label. A complete order would read: ''1.000 Needles, Type 157 GJS, Size 100/040".
Selection of proper needle size is determined by size of thread used. Thread
should pass freely through needle eye in order to produce a good stitch formation •
Success in the operation of UNION SPECIAL machines can be secured only by
use of needles packaged under our brand name, ~ which is backed by a
reputation for producing highest quality needles in materials and workmanship for
more than three-quarters of a century.
G
A
CHANGING NEEDLE
Release pressure on presser foot by turn-
ing presser foot release bushing (A. Fig. 2) and
swing presser arm (B) out of position. With
needle at high position. loosen screw (C) and
withdraw needle.
To replace needle, leave needle holder at
high position and with the flat to the left. insert
the needle in the needle holder until it bottoms
against the needle thread eyelet (D). Tighten
screw (C). return presser arm (B) to position
and re-lock presser foot release bushing (A) •
PRESSER FOOT PRESSURE
Fig. 2 Sufficient presser foot pressure to feed
work uniformly should be maintained. Should
it be necessary to increase or decrease amount of pressure on presser foot, loosen
lock nut (E. Fig. 2) and turn adjusting screw (F). Adjusting screw has a right hand
thread. so tightening increases pressure. loosening decreases pressure. When
pressure adjusting screw (F) has been properly set. tighten lock nut (E). With
presser foot resting on throat plate. position locking nut (G) so that its under sur-
face is approximately 1/32 inch to 1/16 inch from the top surface of adjusting screw
(F). Set cap (H) against locking nut (G).
FEED ECCENTRICS
The feed eccentric used in these machines have been selected to produce ap-
proximately 10 stitches per inch on Styles 43500 F and L, while on Style 43500 D
the eccentric has been selected to produce approximately 8 stitches per inch. It
will be noted that the part number of the feed eccentric is No. 39540 B-10 on Styles
43500 F and L. while the part number of the feed eccentric is No. 39540 B-8 on
Style 43500 D. Minor numbers of the part symbol indicates approximately the
number of stitches produced when using that eccentric. Unless otherwise specified,
the machine will be shipped with above eccentric.
5
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FEED ECCENTRICS (Continued)
The following stitch number feed eccentrics are available under No. 39540 B-4,
-5, -6, -7, -8, - 9, - 10,-11,-12,-13,-14,-15,-16,-18,-20,-22.-24,-26,-28,-30,-32,
- 34,-36, - 40. Only one eccentric is supplied with each machine. Additional eccentrics
may be ordered separately. To order an eccentric, use No. 39540 B with a minor
number suffixed to indicate approximately the number of stitches desired. Example:
11
39540 B-10".
SETTING THE NEEDLE
With the throat plate (A, Fig. 3)
assembled in position, the needle arm
(B) should be set so that the needle
enters the center of the slot in the
throat plate and at high position, the
point of the needle should be set 7/ 16
inch above the top surface of the throat
plate (Fig. 3). This can be accomp-
lished by loosening screw (C), reposi-
tion needle driving a;rm as required
and retighten screw. Remove the
throat plate.
SETTING THE LOOPER
Fig. 3
The looper (A, Fig. 4) should be inserted in the looper holder (B) until its shank
contacts the looper bar (C) and should be set so the flat side of the blade is parallel
with the looper bar. Tighten screw (D). The looper holder (A, Fig. 5) should be set
· on the looper bar (B) so that the point of the looper
is 5/64 inch to the right of the centerline of the
needle when the looper is at its extreme right posi-
tion (Fig. 5). The point of the looper must barely
clear the back of the needle as it passes to the
left. This can be accomplished by loosening screw
( C, Fig. 5), reposition looper holder as required
and retighten screw.
The needle must also clear the backside of
the looper on the downstroke of the needle. The
setting as outlined in the first paragraph gives the
maximum amount of needle clearance behind the
looper. To decrease the clearance and eliminate
skipping, loosen screw (c. Fig. 5) and move
holder to the rear and then loosen screw (D, Fig.
4) and move looper point forward to just clear
the needle as it moves to the left. Retighten
screws.
SETTING FRONT NEEDLE GUARD
Fig. 4 The front needle guard (D. Fig. 5) should be
set as high as possible without interfering with the
looper and clear the closest contacting surface of the needle by approximately • 003
inch. This can be accomplished by loosening screws (E. Fig. 5), reposition front
needle guard (D) as required and retighten screws.
SETTING REAR NEEDLE GUARD
The rear needle guard (F, Fig. 5) should be set as high as possible without
interfering with the needle thread loop and deflect the needle • 002 to • 005 inch at
the point of con tact.
6
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SETTING REAR NEEDLE GUARD {Continued)
This can be accomplished by loosening nut (G, Fig. 5), reposition rear needle
guard (F) as required and retighten nut.
NOTE: Should ever the tilt angle of the feed dog
or stitch length require changing, always
recheck the rear needle guard settin g.
SETTING THE FEED DOG
The feed dog {A, Fig. 6) should be set so
that the tips of its teeth extend the depth of a
tooth above the throat plate at its high point of
travel. This can be accomplished by loosening
screw {E, Fig. 4), turn the feed dog height adjust-
ing screw {F) as required and retighten screw
{E). The feed dog must also be tilted so the end
closest to the operator is • 005 to . 010 inch lower
than the rear teeth. Loosen nut {B, Fig. 6) and
turn screw {C) as required to obtain the proper
tilt angle. Turning the screw clockwise will lower
the front of the feed dog, turning it counterclock-
wise acts the reverse. Recheck rear needle
Fig. 5 guard settin g and tighten nut {B).
SETTING THE STITCH LENGTH
Length of stitch is determined by feed eccen-
tric used. In assembling the feed eccentric {A,
Fig. 7), be sure the hub and oil g roove is to the
left. Beveled edge of feed eccentric spacer {B)
should also be to the left side, so the undercut on
the spacer will be over the hub on the feed eccen-
tric. Be careful not to da mage shaft or key. As s em-
ble washer {C) and ti g hten nut {D) securely.
To change feed eccentrics, remove nut {D) ,
washer {C) . and fe ed eccentric spacer {B). Turn
handwheel in operating direction until key slot in
eccentric is toward the front. With a suitable tool
reach behind the eccentric {A) and withdraw eccen-
tric. It may be necessary to move the handwheel
back and forth slightly during extraction. If eccen-
tric is unusually ti g ht fitting, it may be helpful to
remove nut {E) and feed driving connection {F). Then
continue as originally suggested.
Fig. 6
SETTING THE PRESSER FOOT
Fig. 7
Assemble the presser foot to the presser arm. With
needle in high position. swin g presser arm into s e wing
position and set the presser foot to align needle holes {back
and front) and flat on throat plate. The front edge of ne e dle
hole in presser foot must be aligned with front edge of
needle hole in throat plate. It is also important that the
bottom of the presser foot be flat on the throat plate. If
necessary, presser foot can be realigned with throat plate
slots by shifting the foot lifter lever shaft {A, Fig. 8).
7
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SETTING THE PRESSER FOOT (Continued)
To move the shaft, loosen collar screws (B) and clamp screw (C) and then shift the
foot lifter lever shaft to the left or right as required. Retighten collar screws and
clamp screw. The foot lifter lever arm (D) and the collar (E) secure the shaft. Be
sure the presser arm does not bind and rise when presser foot release bushing is
unlocked. Adjust lifter lever stop screw (F) so that presser foot can be raised no
higher than the head of the needle driving arm will permit, approximately 3116 inch
above the top surface of the throat plate, then lock nut (G). There should be from
1I 16 to 1I8 inch free motion of foot lifter lever before the presser foot begins to
rise. This adjustment should be made with screw (H) and locked with nut (J) •
EYELET SETTINGS
The needle thread eyelet (A, Fig. 9) should be set at position "3 "as a pre-
liminary starting point (See Fig. 9). Upon sewing, if a tight needle thread loop is
desired, loosen thumbscrew (B) and move needle thread eyelet (A) to a lower number
(towardsletter "T"). Movingeyeletinthereversedirection (towardsletter "L") will
produce a loose needle thread loop.
Moving the eyelet towards the "T "position tends to draw more thread on the up-
stroke of the needle travel and moving the eyelet towards the "L" position will tend
to draw more thread on the downstroke of the needle travel.
The looper thread take-up (C, Fig. 9) should be set so its leading edge is even
with the front edge of the needle driving arm (D). This can be accomplished by loosen-
ing screws (E), reposition looper thread take-up as required and retighten screws.
CAUTION: This take-up is also an oil seal for the needle driving arm shaft and
must be pressed to the right against the bed casting to seal and take-up end play.
Fig. 8
Fig. 10
Fig. 9
The looper thread take-up eyelet (A, Fig. 10) should
be set so the thread is in alignment through the very
top of the take-up (before cast-off) with the needle
in the up position and also in alignment through end
of slot of take-up with the needle in the down position
(See Fig. 10).
8
From the library of: Superior Sewing Machine & Supply LLC

EYELET SETTING (Continued)
Looper thread should cast-off when the point of the needle is at the top of the looper
for a preliminary setting. Loosen screw (B), reposition looper thread take-up
eyelet as required and retighten screw. Should more thread be required in the
stitch, move the looper thread take-up eyelet upward, to cast off later, moving it
downward acts the reverse.
THREAD TENSIONS
The looper thread tension should be set as light as possible and still control
the thread. The needle thread tension should be set to produce a reasonably well
pulled up stitch and still not pucker the material.
CLOTH PLATE REMOVAL
CAUTION: When removing the cloth plate (A, Fig. 11) loosen the cloth plate stud
locking screw (B) and lift upcloth plate with the cloth plate stud (C) and cloth plate
screw (D) assembled.
In assembly, the cloth plate screw and the cloth plate stud are tightened to the
point of removing all play and yet turn in the cloth plate. The cloth plate is then
assembled to the machine with the flat and ''V" slot of the cloth plate stud (C) towards
the rear. Stud locking screw (B) is tightened securely which collapses the body of
the stud to the screw (D) so that only the cloth plate will turn when opening or closing •
Fig. 11
9
From the library of: Superior Sewing Machine & Supply LLC

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From the library of: Superior Sewing Machine & Supply LLC

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MAIN
FRAME,
Part
No.
43564
22838
39557 A
43557
39556 A
39557
39557
F
39557 c
39557 E
39557 B
39582 AH
50-795 Blk.
22562 A
39582 w
51-103 Blk,
39582 AG
39582 v
39582 AF
22541
39582 AE
667 D-8
22571 E
39594 R
22569 D
80
43579
43568
A
22569 D
39501 K
22569
22565
F
660-234
43594
86 X
41071 G
39582 D
22657 D-12
43501 A
43501
90
39532 A
25 s
22824
39594 G
39594 H
22513 B
43568 B
39593 H
660-243
22894 AE
39582 F
22653 D-4
39593 D
395
93 c
39582 y
22569
39582 XD
39595
22586 R
MISCELLANEOUS COVERS, PLATES AND EYELETS
Description
Amt.
Req.
Adjustable Needle Thread Control Eyelet ------- 1
Thumbscrew, for adjustable needle thread
control eyelet - - ---------------------------- 1
Presser Spring Plunger----------------------- 1
Presser Spring Spacer------------------------ 2
Presser Foot Release Bushing----------------- 1
Presser Spring ------------------------------ 1
Lock Nut, for plun g er adjusting screw---------- 1
Presser Spring Plunger Adjusting Screw-------- 1
Presser Spring Plunger Lock Nut-------------- 1
Presser Spring Plunger Cap Nut--------------- 1
Top Cover-------------------------- - -------- 1
Presser Foot Release Bushing Guide Pin --- 1
Screw, for hin ge bracket------------------ 1
Oil Guard ---- - -------------------------- 1
Hinge Pin ------------------------ - ------ 1
Hinge Bracket --------------------------- 1
Spring, for oil filler cover---------------- 1
Oil Filler Cover ------------------------- 1
Screw, for top cover ------------------------- 8
Top Cover Gasket---------------------------- 1
Dowel Pin, for top cover---------------------- 2
Magnetic Oil Drain Plug ---------------------- 1
Oil Collector Plate--------------------------- 1
Screw, for oil collector plate------- - ---------- 1
Screw, for supplementary cloth plate----------- 1
Supplementary Cloth Plate -------------------- 1
Looper Thr ea d Take-up Eyelet ---------------- 1
Screw, for looper thread take-up eyelet -------- 1
Cloth Plate Stud------------------------------ 1
Screw, for cloth plate stud------------------- - 1
Screw, for feed ad j usting pin------------------ 1
Coupling, for needle driving arm bushing oil
tube--------------------------------------- 1
Needle Drivin g Arm Bushing Oil Tube---------- 1
Screw, for feed mechanism cover-------------- 1
Nut, for feed mechanism cover screw---------- 1
Feed Mechan i sm Cover----------------------- 1
Screw, for cloth plate ------------------------ 1
Cloth Plate, for semi or fully-submerged
installation--------------------------------- 1
Cloth Plate, for non-submer g ed installation----- 1
Screw, for cloth plate latch spring------------- 2
Cloth Plate Latch S pr ing ---------------------- 1
Screw, for mountin g attachment --------------- 2
Screw, for oil filt er screen ------------------- 2
Oil Filter Screen----------------------------- 1
Oil Strainer-- - ------------------------------ 1
Screw, for looper thread frame eyelet --------- 1
Looper Thread Fr a me Eyelet------------------ 1
Oil Sight Gau ge ------------------------------ 1
Oil Gauge Seal Rin g -------------------------- 1
Screw, for looper lever shaft------------------ 2
Bottom Cover a nd Base Plate Extens i on -------- 1
Screw , for bottom cover and ba se plate
exten s ion ---------------------------------- 2
Oil Gau ge Indicator--------------------------- 1
Oil Gau ge Float------------------------------ 1
B
ottom Cover Ga s ket------------------------- 1
Screw, for bottom cover---------------------- 14
B
ottom Cov e r-------------------------------- 1
Mountin g Iso la tor, rubber--------------------- 4
Screw , f or bottom cover---------------------- 1
11
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A-NEEDLE DRIVE BEARING
B-PI V OT SHAFT BEARING
C-LOOPER DRI VE BE ARING
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CRANKSHAFT MECHANISM AND BUSHINGS
Part
No.
22569
660-219 E
43534 E
39590
43555 A
39573 K
39555 N
39573
AA
43552 B
39552 p
39644 c
39590 T
39644 s
666-94
39690
660-443
22894 D
39591 H
39591 L
39590 J
39590 G
660-268
39590 R
39590 s
39590 H
22541 A
39521 G
95
39521 D
22769 B
29477 JV
258
40-46
C0-67 E
30-106 Elk.
39541 A
51-228 Elk.
29477 MD
22768 c
22596 H
22587 M
39690 A
39690 B
97 A
39590 N
39691
22747 B
39591 K
87 u
39594 N
Amt.
Description
Req.
Screw. for feed bar thrust washer --------------- 3
Roll Pin. for feed bar thrust washer ------------- 2
Feed Bar Thrust Washer and Needle Driving
Arm Bushing. left ---------------------------- 1
Crankshaft Bushing, left------------------------ 1
Foot Lifter Shaft Bushing. left------------------- 1
Pivot Shaft Bushing, left------------------------ 1
Foot Lifter Shaft Bushing. right ----------------- 1
Pivot Shaft Bushing. right----------------------- 1
Needle Arm Bushing. left----------------------- 1
Needle Arm Bushing. right---------------------- 1
Looper Drive Shaft Bushing. right --------------- 1
Crankshaft Bushing. inner left------------------- 1
Looper Drive Shaft Bushing. left----------------- 1
Oil Wick and Spring ---------------------------- 1
Crankshaft Bearing. inner right ----------------- 1
"O" Ring. for crankshaft bearing. inner right----- 1
Screw. for fan collar--------------------------- 2
Chamber Cooling Fan Collar-------------------- 1
Char.nber Cooling Fan--------------------------- 1
ThrustWasher--------------------------------- 1
Crankshaft Ball Bearing Housing----------------- 1
Crankshaft Ball Bearing ------------------------ 1
Ball Bearing Stop Collar------------------------ 1
Spacer Collar---------------------------------- 1
Crankshaft Ball Bearing Retainer Plate----------- 1
Screw. for ball bearing housing------------------ 3
Pulley ---------------------------------------- 1
Screw. for pulley--------------------------- 2
Pulley Cap ------------------------------------ 1
Screw. for pulley cap--------------------------- 1
Crankshaft and Needle Driving Crank------------- 1
Nut.
for crankshaft ------------------------- 1
Washer. for crankshaft---------------------- 1
Cork Plug. for crankshaft ------------------- 1
Wood
Plug --------------------------------- 1
Feed Drive Eccentric Key ------------------- 1
Vent Plug. for crankshaft ------------------- 1
Needle Driving Arr.n Crank and Connecting
RodAsser.nbly----------------------------- 1
Screw. for needle driving arr.n connecting
rodpin-------------------------------- 1
Screw. for needle driving arm crank ------ 1
Screw. for needle driving arr.n connecting
rod----------------------------------- 2
Stud.
for crankshaft bearing--------------------- 1
Crankshaft Split Bearing------------------------ 1
Screw. for split bearing--------------------- 2
Stud.
for split bearing-------------------------- 1
Crankshaft Counterweight. right----------------- 1
Screw. for counterweights ---------------------- 4
Crankshaft Counterweight. left ------------------ 1
Screw. for oil splasher ------------------------- 1.
Oil Splasher----------------------------------- 1
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NEEDLE GUARD. FEED DOGS. FEED MECHANISM
AND NEEDLE DRIVE MECHANISM
Part
No.
39536 K
39536 E
22565 F
39535 c
39535 J
39535
53634 c
22569
43534 D
43535
53634 c
22569 B
538
39536 J
39538
258 A
43534 c
43525 B
43525 A
22863 c
43534 B
39540 B-10
39540 B-8
39536 AF
39540 K
40-46
258
93 A
9205 E
56305
43505
87 u
43552 A
43552
28 c
22596 E
157 GJS
43568
88
660-207
39552 c
39543 y
22782 A
39552 R
39594 N
87 u
Amt.
Description
Req.
Feed Bar Driving Connection Bushing --------------- 1
Nut. for feed bar driving stud ---------------------- 1
Screw. for feed adjusting pin----------------------- 1
Feed Adjusting Pin-------------------------------- 1
Feed Bar Guide Block ----------------------------- 1
Main Feed Bar Guide. left ------------------------- 1
Washer. for feed bar guide screw------------------- 2
Screw. for left main feed bar guide ----------------- 2
Main Feed Bar------------------------------------ 1
Main Feed Bar Guide. right------------------------ 1
Washer. for feed bar guide screw------------------- 2
Screw. for right main feed bar guide---------------- 2
Feed Dog Height Adjusting Screw ------------------- 1
Feed Bar Driving Stud----------------------------- 1
Feed Lift Block----------------------------------- 1
Nut. for feed dog holder --------------------------- 1
Stabilizing Washer. for feed dog holder-------------- 1
Clamp Washer. for rear needle guard--------------- 1
Needle Guard. rear ------------------------------- 1
Tilting Screw. for feed dog holder ------------------ 1
Feed Dog Holder---------------------------------- 1
Main Feed Driving Eccentric. for Styles 43500
Fand L ----------------------------------------- 1
Main Feed Driving Eccentric. for Style 43500 D ------ 1
Feed Bar Driving Connection----------------------- 1
Feed Eccentric Spacer----------------------------- 1
Washer. for feed driving eccentric------------------ 1
Nut. for feed driving eccentric --------------------- 1
Screw. for feed dog ------------------------------- 1
Feed Dog. 16 teeth per inch. for Style 43500 F ------- 1
Feed Dog. 16 teeth per inch. for Style 43500 L ------- 1
Feed Dog. 12 teeth per inch. for Style 43500 D------- 1
Screw. for needle driving arm thread eyelet --------- 1
Needle Driving Arm Thread Ej>;elet------------------ 1
Needle Driving Arm. marked 'H
11
------------------ 1
Screw. for needle----------------------------- 1
Screw. for needle driving arm------------------ 1
Needle------------------------------------------- 1
Looper Thread Take-up---------------------------- 1
Screw. for looper thread take-up --------------- 2
11
0
11
Ring. for looper thread take-up ---------------- 1
Take-up Lever Thrust Washer---------------------- 1
Needle Lever Drive Shaft Thrust Collar ------------- 1
Screw. for needle drive shaft thrust collar------- 1
Needle Lever Drive Shaft -------------------------- 1
Oil Splasher -------------------------------------- 1
Screw. for oil splasher ---------------------------- 1
15
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SA
BB
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
36A
37
37A
37B
37C
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
THROAT PLATE, THROAT PLATE SUPPORT, LOOPER AND LOOPER DRIVE MECHANISM
Part
No.
43580
43 578 B
22784 E
660-334
43580 A
22656 A-6
87
43524 A
43524
0112
22564 D
43508
22503 F
39543 E
39644 L
39644 w
22775
22781
41336 c
43544 A
98
43544
39573 A
39573 E
55235 D
6042 A
55235 E
39673
22587 E
39644 M
22565 c
22565 L
39644 v
39644 p
98
39644 E
22653
J-4
43578
43578 c
43503 c
43503 B
43503 A
25 c
22542
43578 A
22585
4352 5
14077
22892 B
22653
B-12
39580 F
39644 A
39543 p
39644
39644 N
660-206
39543 1VI
22562 A
39644 u
22729 D
22729 E
39644
R-2
39644 R-5
39644 X
538
482 c
22894 c
Description
Amt.
Req.
Throat Plate Support Bracket -------------------------------------- 1
Fabric Guard Position ing F ing er ----------------------------------- 1
Screw, for fabric guard po s itioning fin g er--------------------------- 2
Retainin g Rin g, for pivot shaf t ------------------------------------- 1
Throat Plate Support Plate----------------------------------------- 1
Screw, for throat plate suppor t plate-------------------------------- 2
Screw, for throat plate-------------------------------------------- 2
Throat Plate, for Style 43500 F ------------------ - ----------------- 1
Throat Plate, for Style 43500 L ------------------------------------ 1
Throat Plate, for Style 43500 D ------------------------------------ 1
Screw, f or looper------ - ------------------------------------------ 1
Looper, marked "CT
11
-------------------------------------------- 1
Screw, for cam follower lockin g clamp------------------------------ 1
Cam Follower Lockin g Clamp-------------------------------------- 1
Cam Follower------------------------------------------- - -------- 1
Looper Bar Sleeve------------------------------------------------ 1
Screw, for looper avoid link--------------------------------------- 1
Screw, for looper avoid link pin------------------------------------ 1
Looper Avoid Link Pin -------------------------------------------- 1
Thrust Collar, for pivot shaft-------------------------------------- 1
Screw, for thrust collar--------------------------------------- 2
Looper Avoid Pivot S haft------------------------------------------ 1
Washer, for pivot shaf t -------------------------------------------- 1
Pivot Shaft Drive Lever ------------------------------------------- 1
Locking Stud, for drivin g lever--------------------------------- 1
Washer, f or drivin g lev er ------------------------------------- 1
Nut, for drivin g lever----------------------------------------- 1
Looper Avoid Connectin g Rod -------------------------------------- 1
Screw, for connectin g rod------------------------------------- 2
Looper Avoid Link------------------------------------------------ 1
Set Screw, for bushin g and cam gu ide------------------------------- 1
Spot Screw, for bushin g an d cam g uide------------------------------ 1
Bushing and Cam Guide-------------------------------------------- 1
Thrust Collar ---------------------------------------------------- 1
Screw, for thrust collar--------------------------------------- 2
Looper Holder---------------------------------------------------- 1
Screw, for looper holder-------------------------------------- 1
Fabric Guard, for Style 43500 F------------------------------------ 1
Fabric G ua rd, for S ty le 43500 L-------------------------------- - --- 1
Edge
Guide, for St yles 43 500 F a nd L------------------------------- 1
Ed ge Guide Bracket, fo r Style 43 5 00 D ------------------------------ 1
Ed ge Guide, for Sty le 43 500 D-------------------------------------- 1
Sc
rew, for No. 43 503 A on St yle 43500 D---------- - ----------------- 1
Scr ew, for fa bric gua rd a nd edge guide No. 43503 C ------------------- 2
Pivot Sh af t, for fa br ic gua rd-- - ------------------------------------ 1
Screw, for fron t needl e g uard--- - ---------------------------------- 2
Needle Guard, front----------------------------------------------- 1
Nut, f
or lockin g scr ew -------------------------------------------- 1
Lockin g Screw , for cloth pla te la t ch s prin g -------------------------- 1
Screw, for t hroa t plate s upport br a cket----------------------------- 2
Wa
sher---------------------------------------------------------- 2
Looper Ba r --- - -------------------------------------------------- 1
Thrust W as her, f or looper ba r------------------------------------- 2
Looper Drive Le ver----------------------------------------------- 1
Looper Driv e Lever Sh af t------------------------------------------ 1
11
0' Rin g, fo r looper driv e lever shaft ------------------------------ 2
Clamp Collar----------------------------------------------------- 1
Screw, for clamp collar--------------------------------------- 1
Looper Drive Lever Connectin g Rod -------------------------------- 1
Screw, for connecting rod-------------------------------- - ---- 2
Screw, for connecting rod-- - ---------------------------------- 2
Shim, for ball joint guide fork, . 002 in ch thick----------- - --- as required
Shim, for ball joint guide f ork, . 005 inch t hick---------------as required
Ball Joint Guide Fork ------------ - -------------------------------- 1
Screw, for ball joint g uide fork----- .. ------------------------------- 2
Looper Drive Lever Shaft Collar ----------------------------------- 1
Screw, for collar----------------------- - --------------------- 2
17
From the library of: Superior Sewing Machine & Supply LLC

18
From the library of: Superior Sewing Machine & Supply LLC

Ref.
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
PRESSER FEET, FOOT LIFTER PARTS AND THREAD TENSION PARTS
Part
No.
43556
22791 H
258 A
43555
12865
88
39555 c
627
12538
22597 E
39555 F
660-142
39555 D
39555 B
39855
43520 A
604
56330 AR
61430 BT
43530 D
22799 G
43530 B
56330 B
43530 c
22566 B
43520
43530
22799 H
43530 A
51330 w
43530 F
43556 A
22585 B
39592
AB
39592 AC
39592 AK
39592 AR-2
43592-8
39592 AJ
39592 AD
39592 AF
39592 AL
39592 AG-3
8372 A
39592
AM
22847 B
22806 A
652-16
39592 AH
43520 B
43530
43530 G
22799 H
Amt.
Description Req.
Presser Arm ----------------------------------- 1
Screw, for presser arm-------------------------- 1
Nut, for presser arm screw---------------------- 1
Foot Lifter Lever Shaft -------------------------- 1
Thrust Collar, for foot lifter lever shaft----------- 1
Screw, for thrust collar---------------------- 2
Foot Lifter Lever Arm--------------------------- 1
Screw, for lever arm------------------------ 1
Lock Nut, for lever arm --------------------- 2
Screw, for lever arm------------------------ 2
Foot Lifter Lever Connecting Link ---------------- 1
Cotter Pin, for connecting link-------------------- 2
Foot Lifter Intermediate Lever ------------------- 1
Foot Lifter Lever Spring------------------------- 1
Foot Lifter Lever ------------------------------- 1
Presser Foot Assembly, for Style 43500 L --------- 1
Screw, for spring --------------------------- 1
Spring, for yielding section------------------- 1
Spring, for chaining section ------------------ 2
PresserFootShank-------------------------- 1
Hinge Screw, for presser foot bottom---------- 1
Presser Foot Bottom ------------------------ 1
Chaining Section----------------------------- 1
Yielding Section----------------------------- 1
Screw, for foot lifter lever----------------------- 1
Presser Foot Assembly, for Style 43500 F --------- 1
PresserFootShank-------------------------- 1
Hinge Screw, for presser foot bottom---------- 1
Presser Foot Bottom ------------------------ 1
Spring, for chaining section ------------------ 1
Chaining Section----------------------------- 1
Chain Cutting Knife------------------------------ 1
Screw, for chain cutting knife and presser foot ----- 1
Looper Tension Nut, blue ------------------------ 1
Needle Tension Nut, red ------------------------- 1
Tension Spring Ferrule -------------------------- 2
Looper Tension Spring------------ .... -------------- 1
Needle Tension Spring --------------------------- 1
Spring Shield------------------------------------ 2
Thread Tension Disc----------------------------- 4
Tension Disc Felt ------------------------------- 2
Thread Tension Post ---------------------------- 2
Tension Post Mounting Bracket ------------------- 1
Washer, for thread tension post------------------- 2
Tension Post Bar-------------------------------- 1
Screw, for tension post mounting bracket ---------- 1
Screw, for tension post mounting bracket ---------- 1
Washer, for bracket scr e w---------- - ------------ 2
Shoulder Nut, for thread tension post-------------- 2
Presser Foot Assembly, for Style 43500 D--------- 1
Presser Foot Shank-------------------------- 1
Presser Foot Bottom, marked "BX
11
---------- 1
Hinge Screw -------------------------------- 1
19
From the library of: Superior Sewing Machine & Supply LLC

20
b
~
29
From the library of: Superior Sewing Machine & Supply LLC