191D-20 Industrial - Sewing machine SINGER - Free user manual and instructions

USER MANUAL 191D-20 Industrial SINGER

Instruction Manual and Parts List

High Speed Straight Lockstitch Sewing Machine

191D

20/20C

30/30C

70/70C

SINGER®

Contents

1 Safety Instructions 1

1.1 Important Safety Instructions 1

1.2 Safe Operation 2

2 Product Description and Machine Specification 3

2.1 Product Description 3

2.2 Machine Specification 4

2.3 Motor, Motor Pulley and V-Belt Specifications 4

3 Setup and Adjustment Instructions 5

3.1 Table Cut-Out Drawing 5

3.2 Oil Reservoir Installation 6

3.3 Belt Cover and Bobbin Winder Installation 7

3.4 Lubrication 8

3.5 ThreadTake-up Lever Oil Supply Adjustment 8

3.6 Rotating Hook Oil Supply Adjustment 9

3.7 Needle Attachment 10

3.8 Bobbin Case Attachment 11

3.9 Machine Threading 11

3.10 Stitch Length Adjustment 12

3.11 ThreadTension Adjustment 12

3.12 Thread Take-Up Spring Adjustment 13

3.13 Knee Lifter Height Adjustment 14

3.14 Presser Foot Lifter Adjustment 14

3.15 Presser Foot Pressure Adjustment 15

3.16 Feed Timing Adjustment 16

3.17 Feed Dog Height Adjustment 17

3.18 Needle to Rotating Hook Relation Adjustment 18

3.19 Presser Bar Height Adjustment 19

3.20 Thread Take-Up Stroke Adjustment 20

4 Maintenance 21

4.1 Machine Head Cleaning 21

4.2 Lubrication 21

4.3 Safety Inspection 21

5 Troubleshooting 22

Contents

6.1Frame and Cover Components 24
6.2 Arm Shaft and Thread Take-Up Lever Components 26
6.3 Needle Bar, Upright Shaft and Rotating Hook Driving Shaft 28 Components
6.4 Presser Foot Components 30
6.5Feed Mechanism Components 32
6.6 Lubrication Components 34
6.7 Oil Reservoir Components 36
6.8 Belt Cover, Bobbin Winder and Thread Stand Components 38
6.9 Machine Accessories 40

6Parts List 23

1.1

Important Safety Instructions

Important

When using the machine, basic safety procedures must be followed. Read with attention all instructions before using the machine. When using it, understand that all basic safety instructions are not limited to the following items. Read all instructions, take care of this manual, and use it as reference when necessary.

• Before running the machine, make sure all relevant safety specifications are adequate to specifications and technical standards in your country.
• The machine should not be run without its safety devices.
• The machine should only be operated by properly trained personnel.
• For your safety, goggles must be used while running the machine.
• Turn off or unplug the machine when the following situations arise:
• Passing the thread by the needle or replacing the bobbin or looper.
• Replacing the needle, presser foot, throat plate, feed dog and sliding plate.
• When the machine is in maintenance.
• When the operator is not running the machine.
• In case of lubricant oil contact with the eyes or skin, washed the surface with plenty of icy water with a generous amount of cold water. In case of ingestion, seek medical help immediately.

• Repair, fitting or maintenance should only be performed by properly trained personnel.

• Maintenance and repair on electric equipment should only be made by qualified personnel. If any electric device is damaged, the machine should be immediately stopped.

• Before starting the machine in full running, a test must be conducted to assure that machine and operator are able to perform the task.
• The machine should not be placed next to a sound source as an ultrasonic welding machine and other equipment.
• The machine should only be run with the proper electric cable and connectors, and also the adequate grounding.
• The machine should only be used to sew materials as indicated in its instructions manual, and indications of use should be followed.
  Singer will not be held responsible for any damage caused by unauthorized changes in the product.

1.2

Safe Operation

To avoid the risk of electric shock, do not open the motor wiring box and do not touch the components assembled inside the wiring box.
- To avoid injuries do not run the machine without the belt cover or in case any other safety device is removed.
- To avoid possible injuries keep fingers, head and clothes far from wheel, belt and motor when the machine is running. Nothing should be placed near those parts.
- To avoid injuries never put your fingers next to the rotating hook and the thread take-up lever cover when the machine is running.
- To avoid possible injuries be careful when putting down or lifting the machine head.
- To avoid accident in case of a sudden start of the machine always turn it off when laying it down, or remove the belt cover and the belt.

• If you machine is equipped with a servomotor, it does not make noises while being driven. To avoid a possible accident caused by an unexpected start, be sure the machine is turned off.
• To avoid electrical shock, do not run the machine without proper grounding.

- To minimize the risk of accidents or damage in electric components caused by electric discharge turn the machine off before unplugging it.

- Clean the machine periodically.

2.1

Product Description

High Speed Straight Lockstitch Sewing Machine

Silver SINGER sewing machine on a metal base, no visible text or symbols on the device body

Table 1 – Machine Specification

Singer Model	Application Maximum Speed [spm]	Stitch Length [mm]	Height of Presser Foot by hand / by knee [mm]	Needle Bar Stroke [mm]	Hook Type	Hook Origin	Needle Cat. Lubrication Lubrication
191D-20	Light to medium	5,000 5.0 5.5/13.0 30.7			Regular	Standard	1955-01 #14	Fully Automatic Lubrication
191D-20C						Koban/Hirose
191D-30	Medium to heavy	4,500 5.0 5.5/13.0 35.0				Standard	1955-01 #18
191D-30C						Koban/Hirose
191D-70	Heavy	3,000 7.0 5.5/13.0 35.0 Large				Standard	1955-01 #21
191D-70C						Koban/Hirose

2.3 Motor, Motor Pulley and V-Belt Specifications

• 1/2 HP (400W) 2-pole (high speed) clutch motor
• M type v-belt

Table 2 – Machine Speed vs. Motor Pulley Diameter

Machine Speed [spm] Motor Pulley Diameter [mm]
191C-20 / 20C 191C-30 / 30C 191C-70 / 70C 50 Hz 60 Hz
5,000	-	-	125	105
4,500	4,500	-	115	95
-	4,000	-	100	85
-	3,500	-	90	75
-	-	3,000	75	65
-	-	2,500	65	55

3.1

Table Cut-Out

Drawing

+1 181 - 0 2-R22.5 115 2-R30 130 50 2-R20 4-R10 2-R18 2-12.75 4-R10 2-R20 2-DEEP 17 2-80 2-DEEP 18 339.7 4-R10 28 130 66 33 Ø8.5 Ø24 DEEP 1 159 Ø16 DEEP 28 59 28 95 206 65 Ø18 65 [phone]

Figure 1

3.2 Oil Reservoir Installation

The oil reservoir should rest on the four corners of the machine table groove.

Two rubber seats '1' for supporting the head portion on the operator side 'A' are fixed on the extended

portion of the table by using nail '2', and the other two rubber cushion '3' on the hinge side 'B' are attached by nail too. Then, the oil reservoir '4' is placed (Figures 2 and 3).

Figure 2 Figure 3

Two hinges '1' fit into the hole in the machine bed, and the machine head fitted the table hinge's rubber '2', before the machine head is placed

to the cushions '3' on the four corners of the table (Figures 4 and 5).

Technical diagram of a sewing machine with numbered parts and exploded view showing internal components

Figure 4 Figure 5

3.3

Belt Cover and Bobbin Winder Installation

Caution

For safety, the belt cover should be installed. The left and right parts of the bobbin winder should be parallel to the plate belt slot on the machine table.

Drill four holes 'A', 'B', 'C' and 'D', in the machine table for screws (Figure 6).

Insert support '1' in the threaded hole in the housing.

Install the front belt cover '3' and get the hand wheel in the middle of the cover hole.

Install the back belt cover '2' at holes 'C', 'D'.

Fix the front belt cover '3' on the support with screws '4', '5' and

washers '6'. The tightening torque for the screw '4' is about 30 kgf×cm, and for the screw '5' is about 25 kgf×cm.

Move the back belt cover '2' backward, until its rubber touches the front belt cover '3', move it again for 0.5\~1.0 mm and fix it with screws and washers.

Fix bobbin winder '7' at hole A', 'B' with screws and washers.

Technical diagram of a mechanical assembly with numbered components and dimensional annotations

Figure 6

3.4

Lubrication

Precaution

When you first operate your machine after set up or after an extended period of disuse, run your machine at 2,000 to 2,500 spm for about 10 minutes for the purpose of bread-in.

Before turning the machine on, fill oil reservoir '1' with sewing machine oil up to 'MAX' mark 'A' (Figure 7).

When the oil level lowers below 'MIN' mark 'B', refill the oil reservoir with the specified oil.

When you operate the machine after lubrication, you will see splashing oil through oil sight window '2' if the lubrication is adequate.

Note that the amount of the splashing oil is unrelated to the amount of the lubricating oil.

Technical diagram of a mechanical device with labeled parts A and B, showing internal components and a close-up view.

Figure 7

3.5

Thread Take-up Lever Oil Supply Adjustment

Adjust the amount of oil supplied to the thread take-up and needle bar crank '2' by turning adjusting pin '1' (Figure 8).

The minimum amount of oil is reached when marker dot 'A' is brought close to needle bar crank '2' by turning the adjusting pin '1' in direction 'B'.

The maximum amount of oil is reached when marker dot 'A' is brought to the position just opposite from the needle bar crank by turning the adjusting pin '1' in direction 'C'.

A B C 1 2

Figure 8

3.6 Rotating Hook Oil Supply Adjustment

Unused machine should run idle for 3 minutes (Moderate intermittent operation).

The amount of oil confirmation paper must be inserted in the state when the machine is running (Figure 9).

Make sure the oil in the oil reservoir is within 'MAX' and 'MIN'.

The confirming time of the oil amount is 5 seconds (check the period of time with a watch).

① The amount of oil confirmation paper

25mm 70mm Rotating hook bush 3-10mm Machine bed The amount of oil confirmation Oil reservoir

Figure 9

Sample showing the appropriate amount of oil (Figure 10)

The amount of oil can be adjusted according to the different sewing process but it must be a suitable amount. Otherwise the hook will

generate heat or the sewing material will be contaminated.

Use the amount of oil confirmation paper for three times to observe the amount of oil. Adjust the screw until the mark on the paper unchanged.

Splashing oil from the hook 1mm Minimum Splashing oil from the hook 2mm Maximum

Figure 10

Adjusting the amount of oil supplied to the hook (Figure 11)

Turning the oil adjusting screw of the hook shaft bushing on bed toward '+' in direction 'A', the oil amount will be increased, and toward '-' in direction 'B', the oil amount will be decreased.

After adjustment the machine must be idling for thirty seconds. It can be confirmed the state of oil supplied.

Diagram illustrating magnetic field lines around a solenoid with labeled points A and B, showing rotational direction and magnetic polarity.

Figure 11

3.7

Needle Attachment

Caution

Choose a proper needle size according to the count of thread and the type of sewing material used. The power supply should be cut off before attaching the needle.

Turn the hand wheel until the needle bar reaches the highest point of its stroke (Figure 12).

Loosen screw '2' and hold needle '1' with its indented part 'A' facing exactly to the right in direction 'B'.

Insert the needle in the direction of the arrow until it will go no further.

Tighten the screw '2'.

Make sure the long groove 'C' of the needle is facing exactly to the left in direction 'D'.

Technical diagram of a sewing machine with labeled parts and a corresponding schematic showing force direction and component labels.

Figure 12

3.8 Bobbin Case Attachment

Fix the bobbin into bobbin case with that the thread open end is directed to the left as observed from you.

Pass the thread through thread slit 'A', and pulls it in direction 'C'. By doing so, the thread will pass un-

der the tension spring and come out from notch 'B' (Figure 13).

When pulling the thread 'C', the bobbin should rotate in the direction of the arrow.

Technical diagram of a mechanical component with labeled parts A, B, and C

Figure 13

3.9 Machine Threading

When threading the machine head, the needle bar should be at the highest point of its stroke.

Thread the machine in the order shown below. Leave thread approximately 4 cm long in the needle (Figure 14).

Technical diagram of a sewing machine with numbered parts and exploded view, showing thread positioning and assembly steps.

Figure 14

3.10

Stitch Length Adjustment

Turn stitch length dial '1' in the direction of the arrow, and align the desired number to marker dot 'A' on the machine arm (Figure 15).

The indication of the dial is in millimeters.

When you want to decrease the stitch length, turn stitch length dial '1' while pressing feed reverse lever '2' in the direction of the arrow.

Diagram of a sewing machine mechanism with labeled parts and directional arrows indicating motion

Figure 15

3.11

Thread Tension Adjustment

Adjusting needle thread tension (Figure 16)

Adjust the tension of needle thread using tension adjusting nut '1' according to different sewing conditions.

Turn the nut '1' clockwise (in direction 'A'), the tension will increase.

Turn the nut '1' counterclockwise (in direction 'B'), the tension will decrease.

Adjusting the bobbin thread tension (Figure 17)

Turn the tension adjusting screw '2' clockwise (in direction 'C'), the bobbin thread tension will increase.

Turn the screw '2' counterclockwise (in direction 'D'), the bobbin thread tension will decrease.

Technical diagram of a sewing machine with labeled parts A and B, showing mechanical components and directional arrows.

Figure 16 Figure 17

Diagram illustrating a medical procedure with labeled steps C and D, showing hand positioning and rotation around a needle.

3.12

Thread

Take-Up Spring Adjustment

The adjustment of the stroke of the thread take-up spring (Figure 18)

Loosen setting screw '2'.

Turn the thread tension post '3' clockwise (in direction 'A'), the stroke of the thread take-up spring will be increased.

Turn the thread tension post '3' counter-clockwise (in direction 'B'), the stroke of the thread take-up spring will be decreased.

Adjusting the pressure of the thread take-up spring '1' (Figure 19)

Loosen setting screw '2' and take out thread tension assembly '5'.

Loosen setting screw '4' and turn the tension post '3'.

Turn the tension post '3' clockwise (in direction 'A'), the pressure of the spring will be increased.

Turn the tension post '3' counter clockwise (in direction 'B'), the pressure will be decreased.

• Usually, the thread take-up spring '1' has been properly adjusted before leaving the factory.

- Only when sewing special clothes or using special thread is readjustment necessary.

Technical diagram of a mechanical assembly with labeled parts and directional arrows indicating motion or flow.

Figure 18

Technical diagram of a mechanical component with numbered parts labeled 1 to 5

Figure 19

3.13

Knee Lifter Height Adjustment

When using the knee lifter, the standard height of presser foot is 10 mm.

You can adjust the presser foot lift up to 13 mm by turning the knee lifter adjusting screw '1' (Figure 20).

When the presser foot lifts to over 10 mm, be sure that the bottom end of the needle bar '2' in its lowest position does not hit the presser foot '3' (Figure 21).

Technical diagram showing mechanical assembly with labeled component 1

Technical diagram of a mechanical device with numbered components labeled 2, 3, and 4

Figure 20 Figure 21

3.14

Presser Foot Lifter Adjustment

Turn the presser foot lifter '1' in direction 'A' to lift the presser foot (Figure 22).

The presser foot will go up about 5.5 mm and stop.

The presser foot will go back to its original position when the lifter is turned down in direction 'B' (Figure 23).

Diagram showing a robotic arm interacting with a vertical surface, labeled with points 1 and A, and an arrow indicating rotation or movement.

Diagram showing mechanical components with labeled parts and directional arrow, likely illustrating a motion or assembly process.

Figure 22 Figure 23

3.15 Presser Foot Pressure Adjustment

Loosen the nut '2', and turn the presser spring regulator '1' clockwise (in direction 'A'), the pressure of the presser foot will be increased (Figure 24).

Turn the regulator '1' counter clockwise (in direction 'B'), the pressure of the presser foot will be decreased.

Tighten nut '2'.

For general sewing of the fabrics, the standard height of the presser spring regulator '1' will be around 33\~36 mm (5 kg).

33~ 36nm ① ② B A

Figure 24

3.16 Feed Timing Adjustment

Caution

If the feed eccentric cam is moved too far, the needle will be broken.

Loosen screws '2' and '3' in feed eccentric cam '1', move the feed eccentric cam '1' in the direction of the arrow or opposite direction of the arrow, and firmly tighten the screws '2' and '3' (Figure 25).

For the standard adjustment, adjust so that the top surface of feed dog and the top end of needle eyelet are flush with top surface of throat

plate when the feed dog descends below the throat plate.

To advance the feed timing in order to prevent uneven material feed, move the feed eccentric cam in the direction of the arrow.

To delay the feed timing in order to increase stitch tightness, move the feed eccentric cam in the direction from the arrow.

Figure 25

3.17

Feed Dog Height Adjustment

Caution

If the screw '2' is tightening too much, the crank '1' will be worn out.

When the feed dog 'A' is at its highest position, the teeth should be above the top surface of the throat plate 'B' as the below height for each machine variety (Figure 26).

Loosen screw '2' of crank '1'.

Move the feed bar up or down to make a correct height.

Securely tighten screw '2'.

See description below for height 191D-20 / 20C 0.70 ~ 0.80 mm 191D-30 / 30C 0.80 ~ 0.90 mm 191D-70 / 70C 1.15 ~1.25 mm

Figure 26

3.18

Needle to Rotating Hook Relation Adjustment

Precaution

If the clearance is too small, the rotating hook points will wear out, and too big, it will cause the skip stitch. When replacing the rotating hook, it should be using the original one.

Adjusting the height of the needle bar (Figure 27)

Turn the handwheel until the needle bar has been at the lowest point, loosen the setscrew '1'.

The line 'A' on the needle bar '2' align with the bottom end of needle bar lower bushing '3', then securely tighten the setscrew '1'.

Adjusting the position of the rotating hook

Loosen two rotating hook set-screws and turn the handwheel until the line 'B' on needle bar align with the bottom end of needle bar lower bushing '3'.

After the above adjustments steps, the rotating hook point '5' aligns with the center of needle '4', and make sure the clearance between the needle and the rotating hook '5' is 0.04\~0.1 mm.

Technical diagram of a sewing machine with labeled parts and exploded views

Figure 27

3.19

Presser Bar Height Adjustment

Loosen setscrew '1' (Figure 28) and adjust the height of the presser bar. When the presser foot rises to the highest, the distance between the throat plate and the presser foot is 5.5 mm (Figure 29).

Tighten the setscrew '1' after adjustment.

Pure technical diagram of a mechanical component with no text, numbers, or symbols

5,5mm

Figure 28 Figure 29

3.20

Thread Take-Up Stroke Adjustment

When sewing for heavy weight material, the thread guides '1' move to the left (in direction 'A') to increase the length of thread pulled out by the thread take-up.

When sewing light weight material, the thread guides '1' move to the

right (in direction 'B') to decrease the length of thread pulled out by the thread take-up.

When marker line 'C' on the thread guide '1' is aligned with the center of the screw that is standard (Figure 30).

Technical diagram showing mechanical assembly with labeled parts A, B, and C, including directional arrows and a magnified inset view.

Figure 30

4

Maintenance

4.1 Machine Head Cleaning

Clean the machine periodically with a soft and dry cloth to remove the excess of dust on the machine head. Do not use any kind of lacquer thinner to wipe the surface.

4.2 Lubrication

If the machine was idle for a long time, lubricate the machine according to the instructions of topics 3.4 to 3.6.

4.3 Safety Inspection

Check periodically if all safety devices are properly installed and adjusted. Check if all fixing and supporting screws of the machine head are adequately tighten.

Check if the v-belt is not excessively worn and if it has the right tension. Check if there is no overheating in the electrical motor and check if the power cord and plug are not damaged.

Problems Possible Causes Possible Solutions
Needle break	1. Needle is installed wrong	1. Install needle correctly
	2. Wrong needle type or size	2. Use proper needle for fabric and thread
	3. Needle is bended	3. Replace needle
	4. Wrong relation with rotary hook	4. Readjust the rotary hook
	5. Needle doesn't center the needle hole of throat plate or presser foot	5. Readjust the needle plate and presser foot
Thread break	1. Low quality thread	1. Change the thread
	2. Thread is thicker than needle hole	2. Use proper needle for fabric and thread
	3. Wrong threading	3. Rethreaded the machine correctly
	4. Thread tension is too strong	4. Readjust the thread tension nut
	5. Needle is installed wrong	5. Install needle correctly
	6. Thread stand installed wrong	6. Install thread stand correctly
	7. Thread tension disc, thread guide, needle, hook point and needle plate are burred	7. Grind off, polish or replace by a new parts
	8. Wrong relation with rotary hook	8. Readjust needle and hook point relation
Skip stitches	1. Wrong relation of needle and hook point	1. Readjust needle and hook point
	2. Wrong threading	2. Rethread the machine correctly
	3. Needle is installed wrong	3. Installed needle correctly
	4. Inadequate thread tension	4. Readjust the thread tension nut
	5. Hook point is damaged	5. Replace by a new part
	6. Needle is bended	6. Replace needle
Loosen stitches	1. Wrong threading	1. Rethread the machine correctly
	2. Thread is thicker than needle hole	2. Use proper needle for fabric and thread
	3. Inadequate thread tension	3. Readjust the thread tension nut
	4. Wrong setting of needle and hook point	4. Readjust needle and hook point
Wrinkled stitches	1. Thread tension is too strong	1. Readjust the thread tension nut
	2. Take-up spring is too strong	2. Readjust the take-up spring
	3. Inadequate pressure of presser foot	3. Readjust the presser foot pressure
	4. Inadequate height of feed dog	4. Readjust the feed dog
	5. Needle is too thick	5. Use proper needle for fabric and thread

6

Parts List

6.1

Frame and Cover

Components

1 ver nts 47 54 7 8 9 48 49 52 50 51 15 5 6 5 46 53 10 11 44 45 29 17 13 15 30 28 26 25 24 23 22 21 20 41 38 39 40 37 35 36 35 14 1 2 3 4 5 6 5 32 43 42 31 37 34 33

No. Part No.	Description	Qty.
		20	20C	30	30C	70	70C
1 10101034 Face plate	1 1 1 1 1 1
2 10122096 Face plate	gasket 1 1 1 1 1 1
3 101S11010 Screw SM1/8x44 L=4 1 1 1 1 1 1
4 10112024 Arm oil shield assembly	1 1 1 1 1 1
5 10122005 Rubber plug	2 2 2 2 2 2

6.1

Frame and Cover Components

No. Part No. Description			Qty.
			20	20C	30	30C	70	70C
6	10122003 Rubber plug 1 1 1 1 1 1
7	101S11001 Screw SM3/16x28 L=9 8 8 8 8 8 8
8	10112063 Side plate 1 1 1 1 1 1
9	10122097 Side plate gasket 1 1 1 1 1 1 1
10	10122006 Rubber plug 1 1 1 1 1 1
11	10122007 Rubber plug 1 1 1 1 1 1
12	100017 Frame	1 1	1 1	1
13	10113003 Two-hole thread eyelet guide	1	1	1	1	1	1	1
14	J900112-001 Singer "S" cameo	1 1	1 1	1
15	101S11004 Screw SM3/16 x 28 L=6	2	2	2	2	2	2	2
17	10113004 Right arm thread guide	1 1	1 1	1
18	101S11007 Screw SM11/64 x 40 L=6	1	1	1	1	1	1	1
19	1011301500 Thread tension regulator assembly	1	1	1	1	0	0	0
	400597 Thread tension regulator assembly	0 0	0 0	1
20	101S16001 Tension adjusting nut	1	1	1	1	1	1	1
21	10112007 Tension disk stopper	1	1	1	1	1	1	1
22	10127002 Tension spring	1 1	0 0	0
	10127017 Tension spring	0 0	1	1	1
23	10112006 Tension disk holder	1	1	1	1	1	1	1
24	10112005 Thread tension disk	2	2	2	2	2	2	2
25	101S30002 Tension post	1 1	1	1
26	10127001 Thread take-up spring	1	1	1	1	1	1	1
27	10103011 Tension post socket	1	1	1	1	1	1	1
28	101S15005 Screw SM9/64x40 L=5.5	1	1	1	1	1	1	1
29	101S15006 Screw SM15/64x28 L=7	1	1	1	1	1	1	1
30	10126002 Tension releasing pin	1	1	1	1	1	1	1
31	10115001 Throat plate	1 1	0 0	0
	10115005 Throat plate	0 0	1	0
	10115014 Throat plate	0 0	0	0	1
32	101S17002 Screw SM11/64 x 40 L=8.5	2	2	2	2	2	2	2
33	10113005 Left arm thread guide	1	1	1	1	1	1	1
34	101S11007 Screw SM11/64x40 L=6	1	1	1	1	1	1	1
35	10122003 Rubber plug 2 2 2 2 2 2
36	101S11001 Screw SM3/16x28 L=9	3 3 3 3 3 3 3
37	1011500200 Slide plate assembly	1	1	1	1	1	1	1
38	10115002 Slide plate	1 1	1	1	1
39	10127009 Slide plate spring	1	1	1	1	1	1	1
40	101S11019 Screw SM3/32x56 L=1.9	2	2	2	2	2	2	2
41	101S12001 Screw stud	4	4	4	4	4	4	4
42	10112002 Scale base plate	1	1	1	1	1	1	1
43	101S11002 Screw SM11/64 x 40 L=5	2	2	2	2	2	2	2
44	J900191-xxx Model plate	1 1	1	1
45	R03001 Model plate rivet	2 2	2 2	2
46	10112062 Thread take-up lever cover	1 1	1	0
	10112064 Thread take-up lever cover	0 0			0 0	1
47	11237003 Safety label	1 1	1	1
48	1011300700 Thread guide rod assembly	1	1	1	1	1	1	1
49	10112008 Thread guide rod	1	1	1	1	1	1	1
50	10112009 Tension disk 2 2 2 2 2 2
51	10127004 Tension spring	1 1	1	1
52	101S30003 Hinge screw 1 1 1 1 1 1
53	J900112-002 Singer logo resin plate (front)	1	1	1	1	1	1	1
54	J900112-004 Singer logo resin plate (back)	1	1	1	1	1	1	1

6.2

Arm Shaft and Thread Take-Up Lever Components

Exploded view diagram of a mechanical assembly with numbered parts for identification

6.2 Arm Shaft and Thread Take-Up Lever Components

No.	Part No. Description		Qty.
			20	20C	30	30C	70	70C
1	10126001 Thread take-up crank shaft 1 1 1 1 1 1
2	101S15001 Screw SM15/64 x 28 L=10.5 1 1 1 1 1 1
3	101S3001 Screw 1 1 1 1 1
4	10105001 Thread take-up lever link 1 1 0 0 0 0
10	10105006 Thread take-up lever link 0 0 1 1 0 0
	1223800300 Thread take-up lever link assembly	0 0 0	0 1	1
6	10124001 Needle bearing	2 2 2 2 2 2
7	1011000100	Needle bar crank	1	1	0	0	0
	1011000400	Needle bar crank	0	0	1	1	0	0
	1221000100	Needle bar crank	0	0	0	1
8	10105002 Needle bar crank rod	1 1 1 1 1 1
9	101S15007 Screw SM9/64 x 40 L=4.8	1 1 1 1 1 1
10	101S15004 Screw SM9/32 x 28 L=16	1 1 1 1 1 1
11	10104001 Counter weight	1 1 1 1 1 1
12	101S15002 Screw SM1/4 x40 L=6	2 2 2 2 2 2
13	10122010	Rubber ring	1	1	1	1
14	101S11003	Screw SM9/32 x 28 L=6	1	1	1	1	1	1
15	10110003	Feed drive eccentric cam 1 1 1 1 0 0
	400058	Feed drive eccentric cam	0	0	0	1
16	101S11013	Screw SMI/4 x 40 L=11	2	2	2	2	2	2
17	10103001 Arm shaft bushing (rear)	1 1 1 1 1 1
18	10122008 Oil seal	2 2 2 2 2 2
19	H03002	Snap ring	1	1	1	1
20	10108001 Thrust collar	1 1 1 1 1 1
21	101S15007	Screw SM1/4 x 40 L=6	2	2	2	2	2	2
22	10103004 Arm shaft bushing (front)	1 1 1 1 1 1
23	10112003	Oil adjusting collar	1	1	1	1	1	1
24	10103003 Arm shaft bushing (middle)	1 1 1 1 1 1
25	101S15006	Screw 1 1 1 1 1 1
26	10112017	Thrust collar	1	1	1	1	1	1
27	10135007	Hand wheel	1	1	1	1
28	101S15008	Screw SM15/64 x 28 L=15	2	2	2	2	2	2
29	10102001 Arm shaft	1 1 1 1 1 1
30	10122012 Roller felt	1 1 1 1 1 1
31	101S11005	Oil amount adjusting pin	1	1	1	1	1	1

6.3

Needle Bar, Upright Shaft and Rotating Hook Driving Shaft Components

Exploded view diagram of a mechanical assembly with numbered parts for identification

No. Part No. Description			Qty.
			20	20C	30	30C	70	70C
1	10122013 Cap 1 1 1 1 1 1
2	10103009 Needle bar bushing (upper) 1 1 1 1 1 1
3	10102002 Needle bar 1 1 0 0 0 0
	10102012 Needle bar 0 0 1 1 0 0
	10102021 Needle bar 0 0 0 0 1 1
4	10138002 Needle bar connection	1 1 1 1 1 1
5	101S11005 Screw SM9/64 x 40 L=6		1	1	1	1	1	1
6	10109001 Slide block	1 1 1 1 1 1
7	10113001 Needle bar thread guide	1 1 0 0 0 0
	10113009 Needle bar thread guide	0 0 1 1 1 1
8	10103010 Needle bar bushing (lower)		1 1 0 0 0 0
	10103023 Needle bar bushing (lower)	0 0 1 1 1 1

6.3

Needle Bar, Upright Shaft and Rotating Hook Driving Shaft Components

No.	Part No. Description		Qty.
			20	20C	30	30C	70	70C
9	101S11006 Screw SM 1/8 x 44 L=4.5	1 1 1 1 1 1 1
10	10113002 Needle bar thread guide 1 1 1 1 1 1
11	1955-01 Needle #14	1 1 0 0 0 0
	1955-01 Needle #18	0 0 1 1 0 0
	1955-01 Needle #21	0 0 0 0 1 1
12	10125004	Gear	1	1	1	1
13	101S15009	Screw SMI/4 x 40 L=8	8	8	8	8	8	8
14	10125003	Pinion (upper)	1	1	1	1
15	10125002	Gear large	1	1	1	1
16	10125001	Pinion (lower)	1	1	1	1
17	10102007	Upright shaft	1	1	1	1
18	10118003 Bobbin	1 1 1 1 0 0
	10818501	Bobbin	0	0	0	1
19	10103017	Upright shaft bushing (upper)	1	1	1	1	1	1
20	101S15006	Screw SM3/16 x28 L=9	1	1	1	1	1	1
21	10103016	Upright shaft bushing (lower)	1	1	1	1	1	1
22	10103015	Hook shaft bushing (rear)	1	1	1	1	1	1
23	10118504 Rotating hook	1 0 0 0 0 0
	10118001 Rotating hook	0 1 0 0 0 0
	10118505 Rotating hook	0 0 1 0 0 0
	10118509 Rotating hook	0 0 0 1 0 0
	11018001 Rotating hook	0 0 0 0 1 0
	10818001	Rotating hook	0	0	0	0	1
24	10108002	Thrust collar	1	1	1	1	1	1
25	101S11012	Screw SM I 1/64x 40 L=4 .8	2	2	2	2	2	1
26	10112016	Position finger	1	1	0	0	2
	10112032 Position finger	0 0 1 1 0 0
27	101S11011	Screw SM11/64 x 40 L=9.5	1	1	1	1	1	1
28	1010000000	Hook shaft bushing (front)	1	1	1	1	1	1
29	101S15008	Screw	1	1	1	1
30	10122015	Thrust collar	1	1	1	1	1	1
31	10123002	Screw SM 11/64 x40 L=3.5	2	2	2	2	2	2
32	10102006	Hook shaft	1	1	1	0
	12202003	Hook shaft	0	0	0	1
33	10118501	Bobbin case	1	1	1	0
	10118517 Bobbin case	0 0 0 0 1 0
	10818502	Bobbin case	0	0	0	0	1
34	10123003	Oil wick	1	1	1	1
35	101S30005	Oil seal screw	1	1	1	1
36	101S15006	Screw SM3/16 x 28 L=12	1	1	1	1	1	1
37	10109002	Needle bar slid block guide	1	1	1	1	1	1
38	101S11008 Screw SM11/64x40 L=8		2	2	2	2

6.4

Presser Foot

Components

Technical diagram of a mechanical assembly with numbered components for identification

6.4

Presser Foot Components

No. Part No. Description			Qty.
			20	20C	30	30C	70	70C
1	10111001 Hand lifter	1 1 1 1 1
2	101S11010 Screw SM9/64 x 40 L=9.5	1 1 1 1 1 1
3	O01004 Rubber ring	1 1 1 1 1
4	1011000200 Hand lifter cam assembly	1 1 1 1 1 1
5	1011201100	Hand lifter link assembly	1	1	1	1
6	H05009	Snap ring	1	1	1	1
7	101S20001	Link screw stud	2	2	2	2
8	1011600100	Presser foot assembly	1	1	0	0	0
	1011600400 Presser foot assembly		0	0	1	0
	1011600800 Presser foot assembly		0	0	0	1
9	H05009	Snap ring	3	3	3	3
10	10112010	Lifting lever 1 1 1 1 1
11	H05009	Snap ring	1	1	1	1
12	101S20004	Screw	1	1	1	1
13	101S20003	Screw	1	1	1	1
14	10112014	Lifting lever link	1		1	1	1	1
15	10126003	Connecting rod vertical	1		1	1	1	1
16	10112013	Lifting lever connection rod	1		1	1	1	1
17	H05009	Snap ring	2	2	2	2
18	10127008	Tension release return spring	1		1	1	1	1
19	10127003	Tension release pin spring	1		1	1	1	1
20	10126003	Tension release supporting pin	1		1	1	1	1
21	10112012	Tension release plate	1		1	1	1	1
22	101S20002	Tension release screw stud	1		1	1	1	1
23	101S30004	Presser spring regulator	1		1	1	1	1
24	101S16002	Presser spring regulator nut	1		1	1	1	1
25	10102003	Presser guide bar	1		1	1	1	1
26	10127005	Presser spring	1	1	0	0
	10127018	Presser spring	0	0	1	1
27	10109003	Presser bar guide bracket	1		1	1	1	1
28	10102004	Presser bar	1	1	1	1
29	10113008	Presser bar thread guide	1		1	1	1	1
30	101S15007	Screw SM 1/4 x 40 L=8	1		1	1	1	1
31	101S11005	Screw SM 9/64 x 40 L=8.5	2		2	2	2	2
32	10103012	Presser bar bushing (lower)	1		1	1	1	1
33	101S11009	Screw SM9/64 x 40 L=10.5	1		1	1	1	1
34	10128002	Washer	1	1	1	1
35	10122034	Presser bar oil protection bushing	1		1	1	1	1

6.5

Feed Mechanism

Components

Exploded view diagram of a mechanical assembly with numbered parts for identification

No.	Part No. Description		Qty.
			20	20C	30	30C	70	70C
1	10105005 Feed regulator connecting rod 1 1 1 1 0 0
	12212003 Feed regulator connecting rod 0 0 0 0 1 1
2	10126016 Feed regulator pin 1 1 1 1 1 1
3	10101004 Feed regulator 1 1 1 1 1 1
4	10103020 Feed regulator bushing	1 1 1 1 1 1
5	10126014 Feed regulator screw	1 1 1 1 1 1
6	10127010 Spring	1 1 1 1 1 1
7	10126015 Pin	1 1 1 1 1 1
8	10111052	Feed dial	1	1	1	1	0	0
	12211001 Feed dial	0 0 0 0 1 1
9	101S11022	Screw SM3/16X28 L=18	1	1	1	1	1	1
10	10105003 Feed rock shaft crank connecting rod	1 1 1 1 0 0
	400083	Feed rock shaft crank connecting rod	0 0	0 0 1 1
11	10126006	Pin	1	1	1	1	1	0

6.5

Feed Mechanism Components

No. Part No. Description			Qty.
			20	20C	30	30C	70	70C
12	101S11005 Screw SM9/64x 40 L=6 1 1 1 1 1
13	10105004 Feed lifting rock shaft crank connecting rod 1 1 1 1 1 1
14	10122016 Rubber ring 1 1 1 1 1 1
15	10127012 Spring 1 1 1 0 0
	12227001 Spring 0 0 0 0 1 1
16	H05009 Snap ring	1 1 1 1 1 1
17	1010400500	Feed reverse arm assembly	1	1 1 1	1 1
18	101S17003	Screw	1	1 1 1	1 1
19	H05009 Snap ring	1 1 1 1 1 1
20	101S11005 Screw SM9/64x 40 L=6 2 2 2 2 2 2
21	1012007	Pin	2	2 2 2	2 2
22	10109005 Link	2 2 2 2 2 2
23	10109004 Link	2 2 2 2 2 2
24	1010100200	Feed adjust link assembly	1	1 1 1	1 1
25	10126009	Feed adjust link shaft	2	2 2 2	2 2
26	101S15010 Screw SM15/64x28 L=7	2 2 2 2 2 2
27	101S11005 Screw SM9/64x40 L=6	2 2 2 2 2 2
28	10126013 Feed bar shaft	1 1 1 1 1 1
29	H03001	Retaining ring	1	1 1 1	1 1
30	10114001	Feed dog	1	1 0	0 0	0
	10114004	Feed dog	0	0 1	1 0	0
	10114012	Feed dog	0	0 0	0 1	1
31	101S11018	Screw SM1/8X44 L=6	2	2 2	2 2 2
32	1010700100	Feed bar assembly	1	1 1	1 1
33	10112018	Feed spring hook plate	1	1 1	1 1
34	10102008 Feed rock shaft	1 1 1 1 1 1
35	10126011	Pin	1	1 1	1 1
36	101S11005 Screw SM9/64x 40 L=6 1 1 1 1 1
37	101S16003	Nut SM9/32X 28	1	1 1	1 1
38	10104002 Feed rock shaft crank	1 1 1 1 0 0
	12204003 Feed rock shaft crank	0 0 0 0 1 1
39	101S11016	Screw SM3/16 X 28 L=15.5	1	1 1	1 1
40	10104004 Feed lifting rock shaft crank (back)	1 1 1 1 1 1
41	101S11021	Screw SM3/16 x 28 L=15.5	1	1 1	1 1
42	101S20005	Screw	1	1 1	1 1
43	10102009 Feed driving shaft	1 1 1 1 1 1
44	10108003 Thrust collar	1 1 1 1 1 1
45	101S15002	Screw SM1/4 x 40 L=6	2	2 2	2 2
46	10103018	Feed rock shaft bushing	1	1 1	1 1
47	101S11023	Screw SM3/16 x 28 L=7	1	1 1	1 1
48	101S11025	Screw SM11/64 x 40 L=7	1	1	1	1	1	1
49	H03001	Retaining ring	1	1 1	1 1
50	10101003	Feed bar driving crank	1	1 1	1 1
51	101S11016	Screw SM3/16 x 28 L=14	1	1 1	1 1
52	10128003	Washer	1	1	1 1	1
53	10104003 Lifting fork	1 1 1 1 1 1
54	101S11020	Screw SM11/64 x 40 L=10.5	1	1	1	1	1	1
55	10103018	Feed driving shaft bushing	1	1 1	1 1
56	10108003 Thrust collar	1 1 1 1 1 1
57	101S15002	Screw SM1/4 x 40 L=6	2	2 2	2 2
58	10122017 Rubber ring 1 1 1 1 1
59	10102010	Feed reverse shaft	1	1 1	1 1
60	10103021 Feed reverse shaft bushing	1 1 1 1 1 1
61	10101005	Reverse feed control lever	1	1 1	1 1
62	101S15007	Screw SM1/4 x 40 L=8	1	1 1	1 1
63	101S15011	Screw SM1/4 x 40 L=10	1	1	1	1	1	1
64	10112019	Adjusting link spring guide	1	1 1	1 1
65	10127011	Reverse feed spring	1	1	1	1	0	0
	12227002 Reverse feed spring	0 0 0 0 1 1
66	101S11025	Screw SM1 1/64 X 40 L=5	2	2 2	2 2 2
67	10126010	Screw	0	0 0	0 1
68	GT0569	Washer	0	0 0	0 1
69	GT0570	Feed adjusting shaft	0	0 0	0 1

6.6 Lubrication Components

Technical diagram of a sewing machine with numbered parts for identification and assembly reference.

6.6 Lubrication Components

No. Part No. Description			Qty.
			20	20C	30	30C	70	70C
1	10111004 Oil sight window 1	1	1	1	1	1
2	10122019 Rubber ring 1	1	1	1	1	1
3	10121002 Arm shaft oil tube 1	1	1	1	1	1
4	101S30008 Oil pump support 1	1	1	1	1	1
5	101S11026 Screw SM15/64 x 28 L=9		1	1	1	1
6	101S11004 Screw SM3/16 x 28 L=6		1	1	1	1
7	10127015 Oil felt clip		1	1	1	1
8	1012701500 Oil return tube assembly		1	1	1	1
9	10112023 Oil return tube holder		1	1	1	1
10	10123001 Oil wick		1	1	1	1
11	10121003 Oil tube		1	1	1	1
12	10112022 Oil tube holder (lower)		1	1	1	1
13	101S11026 Screw SM15/64 x 28 L=9		1	1	1	1	1	1	1
14	10127014 Spring		1	1	1	1
15	101S30009 Oil adjusting screw		1	1	1	1
16	1012000100 Oil pump assembly		1	1	1	1
17	10112020 Oil pump installing base		1	1	1	1
18	101S11011 Screw x 8		3	3	3	3	3
19	10120001 Oil pump		1	1	1	1
20	10111003 Oil pump impeller		1	1	1	1
21	101S30006 Screw		3	3	3	3	3
22	10111007 Oil pump cover		1	1	1	1
23	10112021 Oil pump impeller cover		1	1	1	1	1	1	1
24	10122018 Plunger		1	1	1	1
25	10127013 Plunger spring		1	1	1	1
26	101S30007 Plunger screw		1	1	1	1
27	10121001 Hook driving shaft oil tube		1	1	1	1
28	101S11011 Screw SM11/64 x 40 L=9.5		1	1	1	1	1	1	1
29	10136001 Oil tube joint		1	1	1	1
30	101S11010 Oil wick set plate screw		2	2	2	2	2	2	2
31	10112025 Oil wick set plate assembly		1	1	1	1	1	1	1
32	10112026 Presser plate		1	1	1	1
33	101S11033 Screw		1	1	1	1

6.7

Oil Reservoir

Components

Technical diagram of a mechanical assembly with numbered components and exploded views

6.7 Oil Reservoir Components

No. Part No. Description			Qty.
			20	20C	30	30C	70	70C
1	10111005 Knee presser lift rod 1	1	1	1	1	1
2	1010100600 Oil reservoir assembly 1	1	1	1	1	1
3	10101006 Oil reservoir 1	1	1	1	1	1
4	10122020 Gasket 1	1	1	1	1	1
5	10122031 Rubber cushion		1	1	1	1
6	101S11028 Screw			4	4	4	4	4
7	10122021 Rubber ring		1	1	1	1	1
8	101112027 Knee lifter connecting rod			1	1	1	1
9	10127016 Spring			1	1	1	1
10	H05010 Snap ring			1	1	1	1
11	10101008 Bracket		1	1	1	1
12	101S12003 Screw SM9/32x 20 L=20			1		1	1	1	1
13	101S16004 Nut SM15/64 x 28			2		2	2	2	2
14	101S15012 Screw SM15/64 x 20 L=30			2		2	2	2	2
15	101S12002 Screw			2	2	2	2
16	10102011 Knee lifter shaft		1	1	1	1
17	1011202800 Knee lifter plate assembly		1	1	1	1
18	10122024 Knee lifter plate cover		1	1	1	1
19	10112028 Knee lifter plate rod		1	1	1	1
20	10122025 Knee lifter plate rubber		1	1	1	1
21	10112029 Knee lifter plate		1	1	1	1
22	10112030 Knee lifter plate holder		1	1	1	1
23	101S12004 Screw SM15/64 x 28 L=15			1		1	1	1	1
24	10122022 Oil reservoir felt cushion		2	2	2	2
25	10122023 Oil reservoir rubber cushion		2	2	2	2
26	101S30010 Nail			4	4	4	4	4

6.8

Belt Cover, Bobbin Winder and Thread Stand Components

6.8

Belt Cover, Bobbin Winder and Thread Stand Components

No. Part No. Description			Qty.
			20	20C	30	30C	70	70C
1 1011100600 Belt cover assembly 1 1 1 1 1 1
2 10111006 Belt cover 1 1 1 1 1 1
4 1011100900 Belt cover back assembly 1 1 1 1 1 1
5 10111009 Belt cover back 1 1 1 1 1 1
6 1011101000	Belt cover back latch		1	1	1	1
7 101S30012	Belt cover support		1	1	1	1
8 101S11029	Belt cover screw		2	2	2	2
9 101S11030	Screw		1	1	1	1
10	10128007	Washer	1	1	1	1
11	101S30011	Screw	2	2	2	2
12	10128006	Washer	2	2	2	2
13	1011203200	Bobbin winder assembly	1	1	1	1	1	1
14	10112037	Thread tension bracket	1	1	1	1	1	1
15	S04006	Screw SMI 1/64 x 40 L=7	1	1	1	1	1	1
16	10112038	Tension disk	2	2	2	2
17	10127018	Tension spring	1	1	1	1
18	101S16005	Tension nut	1	1	1	1
19	S04006	Screw SMI 1/64' x 40 L=5	1	1	1	1	1	1
20	10112035	Rubber brake bracket	1	1	1	1	1	1
21	10122027	Rubber brake	1	1	1	1
22	10112036	Bobbin winder spring	1	1	1	1	1	1
23	10120006	Hinge screw SMI/Sx44 L=12.5	1	1	1	1	1	1
24	S04017	Screw	1	1	1	1
25	S04006	Screw	1	1	1	1
26	10128001	Washer	1	1	1	1
27	10112032	Bobbin winder base	1	1	1	1	1	1
28	10101010 Bobbin winder pulley		1	1	1
29	10102012	Bobbin winder post	1	1	1	1	1	1
30	101S30014	Screw	2	2	2	2
31	10128008	Washer	2	2	2	2
32	1013100900 Thread stand assembly		1	1	1
33	10122028	Rubber cap	1	1	1	1
34	10131008	Spool post (lower)	1	1	1	1	1	1
35	10131009	Spool post (upper)	1	1	1	1	1	1
36	10112039	Spool post joint	1	1	1	1	1	1
37	10112040	Spool arm (upper)	1	1	1	1	1	1
38	10112041	Spool arm (lower)	1	1	1	1	1	1
39	S04013	Screw	2	2	2	2
40	10113010 Thread guide		2	2	2	2
41	10131010	Spool pin	2	2	2	2
42	10128009	Spring washer	2	2	2	2
43	10128002	Washer	2	2	2	2
44	101S16006	Nut	2	2	2	2
45	10111013	Spool rest	2	2	2	2
46	10111014	Spool retainer	2	2	2	2
47	10128010	Washer	2	2	2	2
48	10128006	Spring washer	1	1	1	1
49	N02003	Nut	1	1	1	1
50	10104003	Screw	2	2	2	2
51	101S11020	Nut	2	2	2	2
52	10102009	Spool rest cushion	2	2	2	2	2	2

6.9

Machine Accessories

5 6 7 12 1 3 2 4 8 10 SINGER 11

Simple line drawing of a rectangular box with dashed lines and a numbered label '9' on the right side (no text or symbols on the box itself)

6.9

Machine Accessories

No. Part No. Description			Qty.
			20	20C	30	30C	70	70C
1	1011203100 Machine hinge plate 2 2 2 2 2 2
2	10122026 Machine hinge rubber cushion 2 2 2 2 2 2
3	101S30010 Nail Set 4 4 4 4 4 4
4	1955-01 Needle #14 3 3 0 0 0 0
	1955-01 Needle #18	0 0 3 3 0 0
	1955-01 Needle #21	0 0 0 0 3 3
5	10131002 Screw driver (large)		1	1	1	1
6	10131003 Screw driver (medium)		1	1	1	1
7	10131004 Screw driver (small)		1	1	1	1
8	10118003 Bobbin		3	3	3	3	0
	10818501 Bobbin	0 0 0 0 3 3
9	IP07042-001 Dust cover		1	1	1	1
10	10111011	Machine rest pin	1		1	1	1	1	1
11	1011105500	Oil container	1	1	1	1
12	10131001	Oil reservoir magnet	1		1	1	1	1	1