coverlock 4872 - Sewing machine PFAFF - Free user manual and instructions

USER MANUAL coverlock 4872 PFAFF

Exterior view of a PFAFF coverlock 4872 machine with control panel and digital display (no visible text or symbols on the device itself)

Instruction Manual

Labeled diagram of a mechanical device with numbered components for identification

Labeled mechanical assembly diagram with numbered components for identification

Parts of the coverlock 4872

1 Upper needle-thread tension
2 Upper needle-thread tension
3 Carry handle
4 Thread tension/upper looper thread
5 Thread tension/lower looper thread
6 Thread tension/two thread chainstitch looper/cover stich looper
7 Tension keys + and -
8 LCD display
9 Slide for sewing speed pre-selection
10 Tension release key
11 Program selection keys ⊕ and ⊖
12 Memory key M
13 Memory selection key P
14 Looper cover
15 Blade guard
16 Looper disengaging lever
17 Standard presser foot
18 Needle plate
19 Swivel plate
20 Adjusting knob for seam width
21 Seam width viewing window
22 Needle holder
23 Sewing light cover
24 Adjusting knob for the pressure foot pressure
25 Upper overedge looper
26 Lower overedge looper
27 Swiveling stitch width latch
28 Two-thread chainstitch looper
29 Threading aid for the two thread chainstitch looper/cover stitch looper
30 Movable upper blade
31 Fixed lower blade
32 Clamp spring for serging thread chains
33 Needle plate disengaging lever
34 Handwheel for lowering the upper blade
35 Tweezers
36 Converter
37 Allen key

For easier understanding of this instruction book please fold out this and the last page when reading.

Safety rules

For the United Kingdom only

The leads must definitely not be connected to the safety lead terminal I nor to a plug with three pins.

The wires in the mains lead are colored according to the following code:

Blue: Neutral

Brown: Live

As the colors of the wires in the mains lead of this appliance may not correspond with the color coding of the terminals in your plug, proceed as follows:

The wire which is colored blue must be connected to the terminal which is marked with the letter N or colored black. The wire which is colored brown must be connected to the terminal which is marked with the letter L or colored red.

Cut-off mains plugs are definitely not to be used, but disposed of immediately. Defective mains leads must be replaced completely.

Only 3 A spare fuses must be used as approved by ASTA according to BS 1362 and the fuse cover must be marked 3 A or with the corresponding color code.

The plug must never be used without fuse cover. Spare fuse covers are available from electrical suppliers or the PFAFF agencies.

Please also observe the general safety notes on page 2.

Important safety instructions

For Australia only

- If the supply cord is damaged, it must be replaced by the manufacturer or its service agent or a similarly qualified person in order to avoid a hazard.

The appliance is not intended for use by young children or infirm persons without supervision.

● Young children should be supervised to ensure that they do not play with the appliance.

Switch off or unplug the machine when leaving it unattended.

● Before servicing the appliance or replacing lamps, unplug the machine.

You will find the contents on page 4 and 5.

Simple triangular warning symbol with no text or labels

Simple geometric triangle shape with no text or symbols

Important safety instructions

For the United States only

This sewing machine is designed and manufactured for HOUSEHOLD use only. When you use an electric appliance, the following basic safety precautions should always be adhered to: Read all instructions before using this sewing machine.

DANGER To reduce the risk of electric shock:

1. The sewing machine should never be left unattended when plugged in. Always unplug this appliance from the electric outlet immediately after using and before cleaning.
2. Always unplug before relamping. Replace bulb with same type rated 5 water.
3. Do not reach for a sewing machine that has fallen into water. Unplug immediately.
4. Do not place or store a sewing machine where it can fall or be pulled into a tub or sink. Do not place in or drop into water or other liquid.

WARNING To reduce the risk of burns, fire, electric shock, or injury to persons:

1. Do not allow to be used as a toy. Great care is necessary when this sewing machine is used by or near children.
2. Only use this sewing machine for its intended purpose as described in this manual. Only use attachments recommended by the manufacturer as contained in this manual.
3. Never operate this sewing machine if it has a damaged cord or plug, if it is not working properly, if it has been dropped or damaged, or dropped into water. Return the appliance to the nearest authorized dealer or service center for examination, repair, electrical or mechanical adjustment.
4. Never operate the sewing machine with any air openings blocked. Keep ventilation openings of the sewing machine and foot control free from the accumulation of lint, dust and loose cloth.
5. Never drop or insert anything into any opening.
6. Do not use out of doors.
7. Do not operate where aerosol (spray) products are being used or where oxygen is being administered.
8. To disconnect, turn all controls to off ("0") position, then remove plug from socket.
9. Never operate on a soft surface such as a bed or couch where the air openings may be blocked.
10. Do not unplug by pulling on cord. To unplug, hold the plug, not the cord.
11. Keep fingers away from all moving parts. Special care is required around the sewing machine needle.
12. Always use the proper needle plate. The wrong plate can cause the needle to break.
13. Do not use bent or blunt needles. Only use needles recommended by the manufacturer.
14. Do not pull or push fabric while stitching. It may deflect the needle, causing it to break.
15. Switch the sewing machine off ("0") when making any adjustments in the needle area, such as threading needle, changing needle, threading bobbin, or changing presser foot, etc.
16. Always unplug sewing machine from the electric outlet when removing covers, lubricating, or when making any other user servicing adjustments mentioned in the instruction manual.
17. Hold plug when rewinding into cord reel. Do not allow plug to whip when rewinding.
    Please also observe the general safety notes on Page 2.

KEEP THESE INSTRUCTIONS IN A SAFE PLACE

Notes on safety

Notes on safety for domestic sewing machines according to EN 60335-2-28 or IEC 335-2-28.

1. The user must exercise adequate caution with regard to the up-and-down movement of the needle and constantly observe the sewing area during work.
2. When leaving the machine, during maintenance work or when changing mechanical parts or accessories, always disconnect the machine from the main power by unplugging the lead cord from the wall outlet.
3. The maximum permissible wattage for the sewing lamp is 5 watts.
4. The tension of the belt drive must only be adjusted by a PFAFF mechanic.
5. The machine must be put into operation according to the indications on the specification plate.
6. Do not place any objects in openings on the machine.
7. Do not use the sewing machine if:
8. there is visible damage,
9. its function is defective,
10. it is wet, e.g. with condensation which can occur when a cold machine is brought into a warm room.
11. Do not pull the mains plug out of the socket by its cord.
12. If this appliance is used for another purpose than that intended or if it is wrongly operated, we cannot accept any liability for any damage caused.
13. To avoid the risk of electric shock, do not open the machine. There are no parts inside the machine which the user can repair. This is the exclusive responsibility of our qualified service staff.
14. Be sure to use only original PFAFF parts.
15. The machine is designated for a mains

supply with a nominal voltage of +/- 10 % and a rated frequency of +/- 4 %.

1. When used properly, the temperature of the outer components of a non-electronically controlled foot control can reach up to 85°C. Constant use at a low speed is therefore not permitted in order to avoid damage.

Environment

The recommended environment is: Ambient temperature 50^ F ( 10^ C) to 104^ F ( 40^ C)

Humidity 20 % to 80 %.

Storage temperature - 13° F (- 25° C) to + 140° F (60° C).

The machine is insensitive to interference, but it should not be used in the direct vicinity of electronic appliances such as radios, televisions, PCs, radio transmitters, etc. This machine is a high quality electronic-mechanical appliance, it is a machine for supervised use in the home. It should be operated in such a way that it is not subjected to: dust, severe dampness, direct sunlight, static electricity, heat-producing objects, corrosive chemicals or liquids. To permit adequate ventilation the machine must be kept unblocked and used on a firm and even surface.

Treatment

Always make sure not to damage your machine by knocking or dropping ist.

Cleaning

Housing and display:

To clean the housing, use a dry, clean and soft cloth which is free of lint. To remove any stubborn dirt, use a soft cloth with alcohol or paraffin.

Please Note!

Never use insecticides or chemical products such as petrol (gas) or thin chemicals to clean the housing.

Simple, up-to-date sewing

Congratulations! You have bought a high-quality product that provides unique advantages. Your new coverlock 4872 can take any material in its stride and will sew through thick and thin for you.

Your PFAFF coverlock features the very latest in design and technology, and it is just as easy to use as this instruction manual is to follow.

If you now take a bit of time to study the instruction manual nothing can go wrong.

It is certainly time well spent, since it is the only way to find out just what your machine can do and make full use of all its features.

If you have any further questions, just ask your PFAFF dealer. He is happy to be of service with any help or advice.

So now let's get started! We wish you many enjoyable hours creating your very own fashion ideas!

Contents

Page
Accessories 6
Accessories, special 68, 69
Accessory box....6
Adjusting the machine to Prog. 1, 2, 3, 4 .... 36, 37
Changing a spool on a threaded machine 24
Clamp spring....30
Cleaning the machine....65
Cone thread adapter....10
Converter, attaching 33
Cover stitch, important notes on sewing 51, 52
Differential feed....38, 39
Differential feed setting, changing and storing 42
Electrical connection....7
Electrical power master switch 7
Error 44
Foot control, connecting....7
Key functions....40
Language, choice 41
LCD Display 40
Light bulb (sewing lamp), changing 67
Looper cover 8
Lubricating the machine....65
Machine cover....6
Maintenance 65 - 67
Needle holder 13
Needle inserting tool 13
Needle plate disengaging lever 64
Needle plate, removing 64
Needle position....12
Needle threader....25
Needle, changing 13
Power table 37
Presser foot 11
Presser foot lifter....10
Presser foot pressure 29
Presser foot, changing 29
Program overview. 46 - 48
Programmable memories, deleting all 44
Programmable memories, notes on storing....44

Contents

Page

Rubber feet, cleaning 65

Safety instructions 1,2

Seam width adjusting knob 34

Seam width viewing window....34

Seam width, setting 34

Sewing light cover 67

Sewing problems and their solutions....70, 71

Sewing speed pre-selection....29

Specifications 72

Spool disc 10

Spool holder 7

Stitch formation correction measures....49-62

Stitch length adjustment knob....35

Stitch length setting, changing and storing 42

Stitch length, adjusting....35

Stitch programs programmable memories, activating 41

Stitch width latch, swiveling 32

Telescoping thread guide 9

Tension settings, changing and storing 43

Thread chain cutter....30

Thread chart 63

Thread guide, Clip-on....10

Thread net 9

Thread tension, setting....45

Thread unreeling disc....9

Threading aid for the two thread chainstitch looper/cover stitch looper....19,21

Threading paths/overview 26 - 28

Threading the lower overedge looper (yellow) 16, 17

Threading the needle(s) 22, 23

Threading the two thread chainstitch looper cover stitch looper (violet) ... 18 - 21

Threading the upper overedge looper (pink) 15

Threading, important note....24

Threading/Thread guides....14

Upper blade, changing....66

Upper blade, disengaging 31

Upper blade, securing 35

Waste container....8

Collection of medical or laboratory tools including surgical instruments, clamps, and test tubes arranged on a plain surface (no visible text or labels)

Accessory box

Open the accessory box 56 by gently pressing the bottom of the box inwards. The following accessories can be found in the box:

1 Overlock needle system EL X 705, cat. no. 2002

2 Thread nets (5)

3 Thread unreeling discs (5)

4 Screw driver

5 Needle threader

6 Wrench

7 Needle inserting tool

8 Replacement upper blade

9 Clip-on thread guide

10 Transparent presser foot (F) for cover stitch and two-thread chainstitch

11 Machine oil

12 Cleaning brush

13 Edge guide

Further accessories

The following accessories can be found behind the swivel plate 19:

1 Converter

2 Tweezers

3 Allen key

Technical diagram of a mechanical device with numbered components labeled 1, 2, and 3

PFAF coverlock

Machine cover

The machine cover protects the machine from dust and dirt. When the sewing process is finished, push the telescoping thread guide 39 together. The spool stand 41 must be pushed to its full extent into the machine, regardless of whether a spool is attached. Place the cover over the machine. The accessories should be stored in the accessory box or compartments behind the swivel plate.

Close-up of a white portable radio with ventilation grilles and a black plug, placed on a surface (no visible text or symbols)

Operating instructions
Electrical connection

Connect the lead cord between the socket 45 of the machine and the wall outlet.

Close-up of a white electronic device with a circular button and connected cables (no visible text or symbols)

Connecting the foot control

Connect the plug of the foot control to the connection socket 47 of the machine.

The pre-selected sewing speed range (see page 29) is regulated by pressing the foot control.

Close-up of a white portable air conditioner with ventilation grille and circular buttons (no visible text or symbols)

Master switch

When you turn on the master switch 46 the sewing lamp is illuminated.

The machine is now operational.

Notes on safety

This appliance has a polarized plug (one blade wider than the other).

To reduce the risk of electric shock, this plug is intended to fit in a polarized outlet only one way. If the plug does not fit fully in the outlet, reverse the plug. If it still does not fit, contact a qualified electrician to install the proper outlet.

Do not modify the plug in any way.

For control sewing machine, foot controller type F 8 YC-485 has to be used.

G E G E G F G E D E PTASS revenues d87

Looper cover

Push the looper cover 14 fully to the right and then swivel it down. Five types of stitches and their threading paths are portrayed in color on the inside of the looper cover.

Note: The electricity supply of the machine is cut off as soon as the looper cover or swivel plate 19 is opened, for safety reasons, i.e. sewing with the machine is no longer possible.

PFAFF conmarkock 1072

PFAFF coverlnck 4972

Waste container

Insert the upper latch of the waste container 53 into the upper slot of the looper cover 14.

Apply pressure to the lower part of the container until the lower latches click into place in the lower slots of the looper cover.

To remove the waste container, repeat this procedure in the reverse order.

Illustration of a mechanical device with three circular components and a central rod, no visible text or symbols.

Spool holder

Before placing thread cones/spools on machine you must pull the spool holder 41 fully away from the back of machine.

Person operating a sewing machine with a hand adjusting the top component (no visible text or symbols)

Telescoping thread guide

Pull the telescoping thread guide 39 upwards to its highest position.

To ensure optimum thread feed, turn the telescoping parts slowly until you hear the locking balls click into place.

Close-up of a hand holding a textured, paper-like object with no visible text or symbols

Thread net

Synthetic threads generally unwind too quickly from the thread spool. Thread nets have been included to allow easy use of these threads. Pull the thread net (located in the accessory box) over the spool from below. Place the spool on the spool holder catching the bottom of the thread net with the spool pin.

Mechanical testing setup with four circular components and a central cylindrical component (no visible text or symbols)

Thread unreeling disc

The thread unreeling disc (in the accessory box) is used for small spools/spools with notched or rough ends. Place the spool on the spool pin 42. Place the thread unreeling disc on top of the spool. Make sure the spool disc 44 is used under the spool.

Hand operating a precision testing machine with a tool inserted into a component (no visible text or symbols)

Spool disc/cone thread adapter

It is advantageous to use the thread unree-ling disc 44 when sewing with large spools (5,000 - 10,000 m). To do this, place the cone thread adapter 43 onto the spool pin 42. With synthetic threads, the spool discs take up any play or surplus in the thread and guarantee excellent thread feed.

Close-up of a textile machine with spools and a coiled spool, no visible text or symbols

Clip-on thread guide

Use the clip-on thread guide accessory when sewing with decorative thread. Clip this onto the telescoping thread guide 39 and thread the machine as shown in the illustration. Use the thread net and the thread unreeling disc.

PFAEF powerlock 4073

Presser foot lifter

The presser foot can be raised and lowered using the presser foot lifter 51. The maximum vertical lift of 6.5 mm for the presser foot for particularly thick fabrics can be achieved by pressing the presser foot lifter towards the rear.

Close-up of a hand using a sewing machine to cut electrical components (no visible text or symbols)

Once an initial thread chain has been created, the presser foot lifter no longer needs to be raised if you continue working with the same thread and presser foot. It is sufficient to gently lift the front part of the presser foot using your thumb. Slide the fabric under the raised part of the presser foot. The fabric is automatically taken up and fed into the machine when you activate the foot control.

Three mechanical components with no visible text or symbols

Presser foot

With the standard presser foot 10 use the setting "A" of the spring-loaded presser foot latch for the cover stitch programs (Progs. 1, 2, 3), the two-thread chainstitch (Prog. 4), the 4-thread safety-stitch seam (Prog. 19) and the 5-thread safety-stitch seam (Prog. 20).

The transparent presser foot F from the accessories can also be used for the cover stitch (Prog. 1, 2, 3) and the two-thread chainstitch (Prog. 4).

For all other programs use the standard presser foot 10 and the setting "B" for the spring-loaded presser foot latch.

Close-up of a hand using a sewing machine to cut a printed object (no visible text or symbols)

Changing the presser foot

Switch off the electrical power

To remove: Raise the needle(s) to the highest position by turning the handwheel towards you. Raise the presser foot and press the lever A at the rear of the presser foot holder. Pivot the presser foot clockwise until the front half of presser foot clears holder and remove by sliding foot away from you towards back of machine.

Mechanical assembly with gears and housing (no visible text or symbols)

To attach: Place the presser foot behind and perpendicular to the sewing foot holder. Pivot the presser foot counterclockwise until the pin of the foot is directly under the presser foot holder clamp. Lower the presser foot lever and press lever A, if necessary, until the foot then clicks into place.

Check: Please lift the presser foot lever to ensure that the presser foot is properly locked into place.

R1 R2

Needle position

This machine has 5 needle positions and can sew with a maximum of three needles at any one time. The needle positions concerned are L0, L1, L2, R1 and R2. The tightening/fastening screw is located directly above the corresponding needle.

0 1L2 1R2 0 1L2 1R2 0 1L2 1R2

The different needle positions are depicted in a schematic drawing in the instruction manual. Also refer to the examples above and below. Insert the needle(s) as shown on the LCD display.

Note: If both the needles R2 and R1 have been inserted, the left needle will be somewhat higher than the right needle.

L1 L0 L2

Note: If the needles L0, L1 and L2 have been inserted, the left needle will be the lowest of the three.

0 1L2 1R2 0 1L2 1R2 0 1L2 1R2 0 1L2 1R2 0 1L2 1R2

If the needles L1 and L2 have been inserted, the left needle will be somewhat lower than the right needle.

If the needle L0 and L2 have been inserted, the left needle will also be lower than the right needle.

Mechanical device with mounted components and a base plate (no visible text or symbols)

Changing the needle

Switch off the electrical power

To remove: Lower the presser foot and move the needle(s) to the highest position by turning the handwheel. Push the needle inserting tool (from the accessory box 56) from below upward fully over the needle. Loosen the fastening screw of the needle (without removing it) with the Allen key and pull the needle down to remove.

Simple 3D-rendered white object with a pointed base and small protrusions, no visible text or symbols.

To insert: Insert the needle into the hole E of the needle inserting tool, so that the flat needle shank K faces the flat side L of the inserting tool. Now insert the needle fully into the holder and tighten the fastening screws. Remove the needle inserting tool.

Two identical dental screw-like devices with no visible text or symbols on the body

Overlock needle types EL X 705, cat. no. 2002 are required for this machine.

Laboratory equipment setup with digital display and mechanical components (no visible text or symbols)

Threading the thread guides

Place the spools on the spool pins 42. You will find information on the thread net, thread unreeling disc, reel disc and cone thread adapter on pages 9 and 10. Thread through the thread guides 38 from the back to the front following the colored threading paths.

Black-and-white photo of a sewing machine with visible spools and base (no text or symbols)

Pull the carry handle 3 upwards. Thread through the underside of the carry handle and through the rear thread guides 52 using both hands to pull the thread down until it slips under the thread guide. Guide the thread through the tension discs and pull it down until it is positioned firmly between the tension discs. Return the carry handle to its original position.

Diagram of a mechanical or electrical component with numbered parts labeled ① to ⑤

Note:

Thread in a sequence of 1 to 5.

Technical diagram of a sewing machine with numbered components and labeled parts

Threading the upper overedge looper (pink)

Turn the handwheel towards you until the upper overedge looper 25 is in its highest position. Thread in a sequence of 1 to 9.

Note:

To make this task easier, use the tweezers which can be found behind the swivel plate.

Technical diagram of a mechanical device with numbered components, likely an electrical or machine assembly.

Thread through the thread guides 1 to 8, which are marked with a pink dot.

Technical diagram of a mechanical device with numbered components labeled 7, 8, and 9

Thread from the front through the eye of the upper overedge looper 9. Pull approximately 4" (10 cm) of thread through the looper and place it to the left under the presser foot.

26

Threading the lower overedge looper (yellow)

Turn the handwheel towards you until the lower overedge looper 26 is on the extreme right.

Labeled diagram of a sewing machine with numbered parts for identification

Thread in a sequence of 1 to 10.

Note:

To make this task easier, use the tweezers which can be found behind the swivel plate.

5 6 7 8

Thread through the thread guides 1 to 8, marked yellow.

Close-up of a sewing machine needle stitching fabric, with hands operating the mechanism (no visible text or symbols)

Press the lever A downwards and hook the thread into the guide B. Please also refer to the drawing below.

Note:

The lever returns automatically to its position as soon as you start sewing.

B A C

Thread from the front through the eye of the lower overedge looper C (= threading point 10).

Black-and-white photo of a mechanical device with visible components and wiring (no text or symbols)

Pull approximately 4" (10 cm) of thread through the looper and place it to the left under the presser foot.

Black-and-white photo of a mechanical device with visible components and no readable text or symbols

Threading the two thread chainstitch looper and cover stitch looper (violet)

Turn the handwheel towards you until the two thread chainstitch looper 28 is on the extreme right.

Technical diagram of a sewing machine with numbered components for identification

Thread in a sequence of 1 to 11.

Note:

To make this task easier, use the tweezers which can be found behind the swivel plate.

Technical diagram of a machine tool with numbered components and control panel

Thread the thread guides which are marked with a violet square in a sequence of 1 to 9.

Interior view of a spacecraft or spacecraft with labeled components (A, B), no visible text or symbols beyond labels

Push the lever A upward and hook the thread into the slot B. Also refer to the drawing below.

Note:

The lever returns automatically to its position as soon as you start sewing.

Technical diagram of a mechanical clamp or bracket with labeled parts A, B, C and an inset showing a close-up view of the clamp.

Thread from the front through the eye C of the two thread chainstitch looper and the cover stitch looper.

Close-up of mechanical components with no visible text or symbols

Pull approximately 4" (10 cm) of thread through the looper and place it to the left under the presser foot.

Black-and-white photo of a mechanical device with attached components and no visible text or symbols

Exception:

Threading the two thread chainstitch looper and cover stitch looper for the cover stitch (violet)

(Prog. 1, 2, 3)

Turn the handwheel towards you until the two thread chainstitch looper 28 is on the extreme right.

Technical diagram of a sewing machine with numbered components for identification

Thread in a sequence of 1 to 10.

Note:

To make this task easier, use the tweezers which can be found behind the swivel plate.

Technical diagram with numbered components and labeled parts, likely from an engineering or mechanical drawing.

Thread the thread guides, as shown in the diagram, in a sequence of 1 to 8. Some of the threads guides are marked with a violet square.

Person in full-body suit standing on a platform, possibly a spacecraft or industrial equipment (no visible text or symbols)

Press lever A upward and hook the thread into slot B. Also refer to the drawing below.
Note: The lever returns automatically to its position as soon as you start sewing.

Technical diagram of a mechanical clamp or clamp device with labeled parts A, B, C and an inset showing a magnified view of the clamp.

Thread from the front through the eye of the two-thread chainstitch looper and the cover stitch looper C.

Black-and-white photo of a person operating machinery with visible wiring and components (no text or symbols)

Pull approximately 4" (10 cm) of thread through the looper and place it to the left under the presser foot.

1 2 3 4 5 6 7 8 PFAFF Geyntelock 4872

Threading the needles

Thread in a sequence of 1 to 8.

Note:

To make this task easier, use the tweezers which can be found behind the swivel plate.

5 3 + - + 4 Proo 6 7

The thread must be guided through the lower slot of thread guide 5.

Cross-sectional view of a mechanical device with internal components (no visible text or symbols)

Pull approximately 4" (10 cm) of thread through the looper and place it to the left under the presser foot (if necessary activate tension release key 10, also see page 40).

1 2 3 4 5 6 7 8 PFAFF CLOVERA 1072

Exception:

Threading needle L2 when sewing a 5-thread safety-stitch seam (Prog. 20), a 4-thread safety-stitch seam (Prog. 19) and a 2-thread chainstitch (Prog. 4)

Thread in a sequence of 1 to 8.

Note:

To make this task easier, use the tweezers which can be found behind the swivel plate.

Diagram of a sewing machine with numbered parts and control buttons, likely for sewing or sewing process.

The thread must be guided through the upper slot of the thread guide 5.

Cross-sectional view of a mechanical device with internal components (no visible text or symbols)

Pull approximately 4" (10 cm) of thread through the looper and place it to the left under the presser foot (if necessary activate tension release key 10, also see page 40).

Technical line drawing of a mechanical assembly with no visible text or symbols

Important note on threading

The needle(s) must always be threaded last so that the needle threads do not run under the looper thread as seen in drawing 1, but instead over the looper thread as depicted in drawing 2. Should this sequence not be followed, thread breakage or missed stitches can occur.

Technical line drawing of a mechanical assembly with no visible text or symbols

If the looper threads break, you must pull the needle threads out of the needle, rethread the looper thread and then rethread the needle threads.

Electrical wiring diagram showing multiple connection points and wires (no text or labels visible)

Changing a spool on a threaded machine

Cut the threads off close to the spool and replace with new spools. Tie together the threads which are still in the machine with the new threads, and pull the threads out of the needles. Activate tension release key 10 (also refer to page 40). Pull on the needle threads until the knots are about 6 inches (15 cm) past the last thread guide in front of the needles. Cut the knots off and pull the threads through the respective needle eyes. The looper threads can be pulled continuously past the looper eye and placed to the left underneath the presser foot.

Close-up of a sewing machine needle stitching fabric, no visible text or symbols

Needle threader

Move the needle(s) into the highest position and lower the presser foot. Place the thread from right to left in notch A of the needle threader (to be found in the accessory box). One of the two triangles must point upwards.

Close-up of a sewing machine needle stitching fabric, no visible text or symbols

Place the needle threader onto the front groove of the needle. Slide the needle threader down to the needle eye and press it lightly against the needle.

Mechanical device with articulated arms and wiring, no visible text or symbols

A small metal pin is pushed through the needle eye and the needle is automatically threaded. Thread loops must be pulled to the back.

Overview of the threading paths and threading sequences

0 1L2 1R2 3

Program 01: cover stich, 2-needle, narrow

0 1L2 1R2 3 1

Program 02: cover stitch, 2-needle, wide

0 1L2 1R2 3 4 1

Program 03: cover stitch, 3-needle 4-thread

0 1L2 1R2 1

Program 04: 2-thread chainstitch

Overview of the threading paths and threading sequences

0 1L2 1R2 ?

Program 05:
2-thread flatlock, narrow
Program 07:
narrow 2-thread serging
Program 08:
2-thread flat hem
Program 09:
folded 2-thread rolled hem

0 1L2 1R2

Program 06:
2-thread flatlock, wide

0 1L2 1R2 3

Program 10:
3-thread overedge, narrow
Program 16:
3-thread flat hem
Program 17:
folded 3-thread rolled hem
Program 13:
3-thread flatlock, narrow

0 1L2 1R2

Program 11:
3-thread overedge, wide
Program 12:
wide 3-thread serging seam
Program 14:
3-thread flatlock, wide

Overview of the threading paths and threading sequences

0 1L2 1R2 3

Program 15:
2-needle 3-thread overedge seam

0 1L2 1R2

Program 18:
4-thread overedge seam

0 1L2 1R2 3 4

Program 19:
4-thread safety-stitch seam

0 1L2 1R2 4 1 5

Program 20:
5-thread safety-stitch seam

Close-up of a hand holding a white object with multiple square buttons, next to a device casing (no visible text or symbols)

Sewing speed pre-selection

Using sewing-speed pre-selection slide 9, the maximum speed can be adjusted anywhere between 700 rev/min. and 1500 rev/min.

1 2 3 4 5 6 7 8

Presser foot pressure

The pre-set presser foot pressure on the machine is suitable for medium-heavy fabrics. The presser foot pressure does not need to be adjusted for most fabrics. If you are working with light or heavy fabrics then you may need to adjust the pressure. In this case, 6 setting positions are available which you can select using the adjusting knob for the presser foot pressure 24. The standard setting is "N".

Black-and-white photo of a vintage sewing machine in the foreground, with no visible text or symbols.

Thread chain cutter

After finishing the seam, sew an approx. 6" - 8" (15 -20 cm) long thread chain. Pull the thread chain from the back to the front over the thread chain cutter 40. This will cut off the thread chain.

Close-up of a sewing machine needle stitching fabric (no visible text or symbols)

Clamp spring for serging thread chain 32

Using this feature you can serge the thread chain at the start of the fabric, by pulling it into the seam. Stitch off a minimum 4" (10 cm) long thread chain and raise the presser foot. Remove the thread chain carefully from the swiveling stitch width latch 27. Pull the thread chain forwards and clamp it under the spring.

Close-up of a sewing machine needle stitching fabric, no visible text or symbols

Place the fabric right in front of the needle(s). If necessary, make an approx. 1.5" (3 cm) cut into the fabric along the cut-line using a pair of scissors. Lower the presser foot and start sewing. The thread chain pulls automatically into the inside of the seam.

Note:

This feature cannot be used for either the five-thread safety-stitch seam, the four-thread safety-stitch seam, the two-thread chainstitch or for the rolled hem.

Close-up of a mechanical device with visible internal components and a hand adjusting it (no text or symbols)

Disengaging the upper blade Switch off the electrical power

Move the movable upper blade 30 into its highest position by turning the handwheel. Remove the waste container and open the looper cover and the swivel plate. Now turn the handwheel fully to the right to lower the upper blade 34.

Interior view of a mechanical or electrical device with multiple components and wiring (no visible text or symbols)

Turn the knob towards you until the upper blades clicks into place below. The upper blade is now disengaged.

Mechanical assembly with gears and housing (no visible text or symbols)

Engaging the upper blade

Push the knob for lowering the upper blade to the right and swivel back the blade until it clicks into the operating position again. Close the looper cover and the swivel plate and remount the waste container.

Mechanical sewing machine with needle and base mount (no visible text or symbols)

Swiveling stitch width latch

For standard overlock seams:

The swiveling stitch width latch 27 remains in the basic position when sewing all types of standard overlock seams (exception: program 1, 2, 3, 4).

Close-up of hands assembling or adjusting a mechanical component (no visible text or symbols)

For rolled hems:

Pull the knob (A) to the right and swivel the swiveling stitch width latch 27 downwards.

Mechanical sewing machine in operation, no visible text or symbols

This setting allows you to sew all types of rolled hems.

Interior view of a mechanical device with visible gears and shafts (no text or symbols)

Attaching the converter

Switch off the electrical power

The converter 36 must be attached for all two-thread seams (exception: Program 4) and the two-needle three thread closing seam. Open the swivel plate and remove the converter 36 from its storage space.

Technical illustration of a mechanical assembly with no visible text or symbols

Position the upper overedge looper 25 right next to the needle by turning the handwheel towards you.

Close-up of a hand operating a sewing machine tool (no visible text or symbols)

Push the tip of the converter into the back side of the eye of the upper overedge looper until it clicks into place and push the converter onto the overedge looper bracket.

Close-up of a hand operating a sewing machine with circuit board (no visible text or symbols)

To remove the converter, gently push the point of the converter from the eye of the upper overedge looper. You can now remove the converter by pulling it upwards from the overedge looper bracket.

Close-up of hands operating a sewing machine needle (no visible text or symbols)

Two schematic diagrams of solenoid coil structures labeled A and B, showing internal winding patterns (no text or symbols beyond labels)

Setting the seam width

The required seam width can be adjusted anywhere between 3.5 and 6 mm by turning the adjusting knob for seam width 20. The setting can be seen at the viewing window 21. The two-thread chainstitch is sewn with a clearance of 6.5 to 9 mm.

Illustration A: Should loops project out of the workpiece, move the movable upper blade 30 to the right by turning the seam width adjusting knob upwards.

Illustration B: Should the stitching be too tight, move the movable upper blade to the left by turning the seam width adjusting knob downwards.

3.5 mm 6.0 mm

5.5 mm 8.0 mm

Note:

The seam width settings 3.5 mm and 6.0 mm are only relevant for needle R2. This set-value is increased by 2.0 mm when using needle R1, i.e. you have a seam width which is completely adjustable from 5.5 mm to 8.0 mm.

Close-up of a mechanical device with hands adjusting parts (no visible text or symbols)

Securing the upper blade

Switch off the master switch

It is recommended to secure the movable upper blade 30 before sewing heavy fabrics. Raise the needle(s) to its highest position and open the swivel plate. Tighten the screw fully using the Allen key. This screw should always be slightly loosened again after sewing heavy fabrics.

Note:

The seam width can no longer be adjusted once the upper blade is secured.

Close-up of a gloved hand holding a circular gauge or dial, with no visible text or symbols.

Adjusting the stitch length

You can set the desired stitch length between 0.5 mm to 4.0 mm by turning the stitch length adjustment knob 50.

Note:

For the two-thread chainstitch, the setting should be 3.0 or higher.

Close-up of a hand operating a sewing machine tool on a wooden surface (no visible text or symbols)

Adjusting the machine to the cover stitch (Prog. 1, 2, 3) and two thread chainstitch (Prog. 4)

This is only necessary if you do not want to trim the fabric edge. Insert the needle(s) according to the LCD display (see page 13). Open the looper cover and remove the blade guard 15 by pulling it towards you.

Lower the swiveling stitch width latch (see page 32) and disengage the upper blade (see page 31). Ensure that the upper blade is disengaged by turning the handwheel.

Cross-sectional view of a mechanical device with numbered components (no readable text or symbols)

Disengage the upper overedge looper. Move the upper overedge looper 25 into its lowest position by turning the handwheel.

Close-up of a mechanical assembly with mounting holes and a tool (no visible text or symbols)

Move the looper disengaging lever 16 to the left. Ensure that the looper is disengaged by turning the handwheel.

Thread the two thread chainstitch looper and the cover stitch looper (see pages 18 to 21) and then the needle(s) (see page 22 and 23).

Close-up of a sewing machine needle stitching fabric, with no visible text or symbols on the device itself.

Press the power table 57 downwards into the designated slot on the looper cover. Close looper cover.

Note:

Please ensure that the upper overedge looper is disengaged before attaching the power table 57.

Close-up of a hand operating a sewing machine with visible mechanical components (no text or symbols)

To return the machine to its previous settings after sewing with the cover stitch or two thread chainstitch.

Open the looper cover and remove the power table.

Close-up of a hand using a sewing machine to adjust or install a small electronic component (no visible text or symbols)

Move the looper disengaging lever to the right, thus re-engaging the upper overedge looper.

Bring the swiveling stitch width latch into the basic position (see page 32) and engage the upper blade (see page 31).

Push the blade guard into the looper cover and close it.

Mechanical device with labeled parts A and B, no visible text or symbols on the device itself

Differential feed

The differential feed consists of two feed dogs (A + B), one behind the other, which feed the fabric. The movement of the front feed dog (A) and thus the amount of material to be fed can be regulated using the regulator wheel 49. The setting range is between 0.5 and 2.0.

The standard setting is 1.0, where the movement of the front feed dog (A) is synchronized with the rear feed dog (B). This means that the front feed dog feeds the same amount of fabric as the rear feed dog.

Note:

The function of the differential feed is independent of the set stitch length and the type of fabric being used.

Close-up of hands adjusting a circular dial with measurement markings (no visible text or symbols)

Set the regulator wheel for the differential feed 49 to 0.5. Here the front feed dog feeds half as fast as the rear feed dog. This means that the front feed dog feeds only half as much fabric as the rear feed dog, causing the fabric to stretch.

Cross-sectional diagram showing a wavy boundary and a diagonal line, with labeled points A and B (no text or symbols beyond labels)

Here you will avoid ruffling in the seam when working with very light fabrics, such as silk and taffeta. Instead, a smooth seam (A) will be achieved.

You can also achieve fashionable effects with the differential feed dog, for example the wavelike effect when using a rib knit (B).

Close-up of a gloved hand holding a circular gauge or dial, with no visible text or symbols.

Set the regulator wheel for the differential feed 49 to 2.0.

Here the front feed dog feeds twice as fast as the rear feed dog. This means that the front feed dog feeds twice as much fabric as the rear feed dog, causing the material to gather.

Close-up of two textured fabric strips labeled A and B, showing parallel grooves and a textured surface (no text or symbols)

Here you will avoid stretching in the seam when working with knitwear, such as jerseys or gathered fabrics. Instead, a smooth seam (A) will be achieved.

You can also achieve fashionable effects with the differential feed dog, for example the gathering effect when using very light fabrics (B).

The following table contains information on the differential feed settings. However, you should always test your setting first on a piece of scrap fabric.

Type of fabric / effect	Differential feed setting
	gather <2>	normal <1>	stretch <0.5>
Very light fabrics: silk, satin, poplin, taffeta, linings.		●	●
Normal fabrics: light and medium-heavy cottons, fine cords, thermal-wear.		●
Light knitwear: jerseys, polo fabrics, cut-pile pullovers, tricot, fine knitwear and gathered fabrics.	●	●
Heavy knitwear: sweatshirt fleece, heavy gathered fabrics, heavy knitwear.	●
Stretch - wavelike effect: medium and light knitwear, jerseys, knitwear, ruffled sleeve and collar edges, skirt hems, dense stitch lengths.			●
Gathering: ruffling light materials and lace, seam allowances for curves, arches on blouses, shirts, skirts, round pockets, flaps, stretching or gentle ruffling of arched sleeves (shoulders), sleeve widths for cuffs or gathered fabrics.	●

Prog 1 Cover Stick 2 3 4 2-Nadel schmal 5 6 7 8 9 10 5 6 7 8 9 10 ⊕ + - M ◆

1 + - + - Prog 1 Cover-Stick 25 10 2-hadel screw 35 4F 10 11 12 13

LCD Display

1 Program no.
2 Name of stitch
3 Stitch length in mm
4 Differential feed setting
5 Needle position
6 Swiveling stitch width latch position stitch width latch in basic position

stitch width latch lowered

7 Upper overedge looper position

looper engaged

looper lowered

Converter engaged

8 Power table position

with power table

without power table

9 Upper blade position

upper blade engaged

upper blade disengaged

10 Seam width in mm
11 Setting of spring presser foot latch A or B - As long as E appears in the display, the transparent presser foot from the accessories can also be used.

Key functions

1 Tension keys + and -
For increasing and reducing thread tension
10 Tension release key
When this key is pressed and held, the thread tensions are released. This allows the thread chain to be easily pulled from the machine. When the key is released, the thread tensions reset for the programm selected.
11 Program selection key + and -
The desired program can be selected with these keys. There are 20 programs preset for your use. If the keys are kept pressed down, the programs will automatically run on. When the machine is switched off and back on, the last program sewn will appear.
12 Memory key M: The adjusted settings for stitch length, differential feed and thread tension can be stored using this key.
13 Memory selection key P: With this key, you can activate the program memory and the programmable memories A, B and C.

Prog 2-pin Cover hem harrow

Choice of language

The following languages can be selected: Czech, Danish, German, English, Spanish, French, Italian, Dutch, Polish, and Portuguese.

Keep both the + and - keys pressed down simultaneously and switch on the machine. The desired language can then be selected using the + and - keys. Program the desired language by pressing the memory key M once.

Each description will then appear in the selected language.

Prog 0150 50 ** * 10 2.5 10 3.5 AF 1L2 IR2 PULL DOWNII

Activating the stitch programs programmable memories

Activate the desired program using the program selection keys + and -. By pressing the memory selection key P once, you can activate the program memory. The set tensions appear on the display. The tensions, marked with ** are not valid for this program, i.e. these tensions must not be threaded. If there is no change made within 10 seconds, the name of the program will appear on the display again.

Preg 25 1.8 3.5 PF 40 POLI 50 + - M P

Prog 12 2 3 5 3 F + - M P

Changing and storing the stitch length setting

Activate the desired program using the program selection keys + and -. Press the memory selection key P until the memories A, B or C appear on the display. By pressing the memory key M, the stitch length display

will flash. Using the program selection key +, you can adjust the stitch length. The changed stitch length can now be stored by pressing the memory key M.

Prog 10 50 25 10 3.5 A P + - + -

Prog + - + - A 2.5 L 3.5 D F - - - + + - M P

Changing and storing the differential feed setting

Activate the desired program using the program selection keys + and -. Press the memory selection key P until the memories A, B or C appear on the display. By pressing the memory key M, the stitch length display will flash. Using the program selection key -, activate the differential feed display i.e. the

differential feed display will flash. Using the program selection key +, the differential feed can now be adjusted and then stored by pressing the memory key M.

Prog + - + - ↑ ↑ 25 10 3.5 AF + - M + + - M P

Changing and storing the stitch length, differential feed and tension settings

Activate the desired program using the program selection keys + and -. Press the memory selection key P until the memories A, B or C appear on the display. By pressing the memory key M, the stitch length display will flash. Using the program selection key +, the stitch length can be changed. Using the program selection key -, the differential feed display will be activated and the differential feed can be changed using the program selection key +. The tension settings can be adjusted in increments of two using the tension keys + and -. The adjusted settings can be stored using the memory key M.

Prog 41 42 43 * * 98 518 A 3.5 A P H 2 1 + - M P -

Prog + - + -

Storing only adjusted tension settings

Select the desired memory using the memory selection key P. Change the tension and press the memory key M twice.

Adjusting the tension without storing

If you would like to adjust the tension e.g. whilst sewing, without having to store this adjustment, simply press one of the tension keys + or -. All tensions can now be adjusted as desired.

Notes on storing in programmable memories

If the memory selection key P is not pressed while storing, the new settings will automatically be stored in a free memory using the memory key M.

If all the memories are occupied, the new settings will not be accepted. Single memories can not be deleted, only overwritten.

Deleting all the programmable memories

Switch off the machine. Press the program selection keys + and - as well as the memory key M. Keep the keys depressed and switch the machine back on. All the memories will be deleted.

Prog . ERROR 2 . . . ↓ M M

Error

If one of the stepping motors for the thread tension adjustment fails, "ERROR" will appear on the display. Error 2 means: the second stepping motor of the green needle thread tension does not function. If "ERROR" appears on the display after having switched the machine off and back on again, your machine must be taken to your authorized PFAFF dealer for service.

Industrial sewing machine with digital display and control buttons (no visible text or symbols)

Setting thread tension

This machine offers automatic setting of the thread tension for each separate program.

As the type of fabric, thread quality and needle size vary and can greatly influence the seam quality, the setting of the thread tensions may require slight adjustments.

Changing the tension settings is described on page 43.

Tip

Always sew off a test seam on a piece of scrap fabric and check the thread loops. Adjust the thread tension if necessary (see pages 49 - 62).

Program overview
Program		Area of application
Program 01Cover stitch 2-needle, narrow		Sewing hems and fancy stitches.
Program 02Cover stitch 2-Nadel, wide		Sewing hems and fancy stitches.
Program 03Cover stitch 3-needle, 4-thread		Sewing hems and fancy stitch.
Program 04Two thread chainstitch		Joining fabric layers where a traditionalpressed-open seam is required. Also workswell as a basting stitch for test-fittinggarments.
Program 052-thread flatlock, narrow		Serging light fabrics. Joining stretch fabricswith a flatlock seam.
Program 062-thread flatlock, wide		Serging medium-heavy fabrics. Joiningstretch fabrics with a flatlock seam.
Program 072-thread narrow serging seam		Serging light fabrics.
Program overview		Area of application
Program
Program 082-thread flat hem		Serging very light fabrics. Decorative edges.
Program 09Folded 2-thread rolled hem		Serging very light fabrics. Decorative edges.
Program 103-thread overedge narrow		Serging light (easily frayed) fabrics.
Program 113-thread overedge wide		Serging tightly woven (easily frayed) fabrics.
Program 12wide 3-thread serging seam		Serging tightly woven (non-fraying) fabrics.
Program 133-thread flatlock, narrow		Serging medium-heavy fabrics. Joining stretch fabrics with a flatlock seam and decorative edges.
Program 143-thread flatlock, wide		Joining fabrics with a flatlock seam and decorative edges.

Program overview
Program	Area of application
Program 152-needle, 3-thread overedge seam	Joining and simultaneous serging of light,very stretchy fabrics.
Program 163-thread flat hem	Serging light to medium-heavy fabrics.Decorative edges.
Program 17Folded 3-thread rolled hem	Serging light to medium-heavy fabrics.Decorative edges.
Program 184-thread overedge seam	Joining and simultaneous serging of all-fabrics, in particular stretchy fabrics.
Program 19Wide 4-thread safety-stitch seam	Joining and simultaneous serging oftightly woven fabrics.
Program 20Wide 5-thread safety-stitch seam	Joining and simultaneous serging oftightly woven fabrics.

Top side Underside

Stitch formation correction measures cover stitch, 2-needle, narrow and wide Program 01, 02

When all tensions are correctly set, the needle threads (green and blue) are just slightly visible on the underside of the fabric. The looper thread (violet) is situated loosely in between.

Top side Underside

The right needle thread (green) is too loose, causing large loops on the underside of the fabric.

Set the green thread tension to a higher value.

Top side Underside

The needle threads (green and blue) are set too tightly causing folds in the fabric.

Set the green and blue thread tension to a lower value.

Top side Underside

Cover stitch, 3-needle 4-thread

Program 03

When all tensions are correctly set, the needle threads (green, blue and pink) are just slightly visible on the underside of the fabric. The looper thread (violet) is situated loosely in between.

Top side Underside

The needle threads (green, blue and pink) are too loose, causing large loops on the underside of the fabric.

Set the green, blue and pink thread tension to a higher value.

Top side Underside

The needle threads (green, blue and pink) are set too tightly causing folds in the fabric.

Set the green, blue and pink thread tension to a lower value.

Stack of blank white paper sheets on a textured surface (no text or symbols visible)

Important notes on sewing with the cover stitch

The power table is marked with various units of measurement. The upper figures are in cm. The lower figures are in inches.

Note: The hemmer guide H2 is available as a special accessory. With this special accessory you can hem your fabric effortlessly without having to press under the hem edge prior to sewing the cover stitch.

Close-up of hands operating a sewing machine needle on fabric (no visible text or symbols)

To start sewing:

Raise the presser foot and place the fabric under the presser foot so the needles pierce the fabric for the first stitch. Position the fabric at the desired width using the marked guidelines on the power table. When starting to sew, pull the fabric taut towards the rear and sew slowly. The speed may be increased as you sew further along the fabric.

Close-up of a hand holding a pen and a small object, possibly a tool or device (no visible text or symbols)

Preparing the fabric:

When not using the H2 special accessory guide, it is useful to press under the fabric edge before hemming it. The width of fabric to be pressed under must be 0.5 cm wider than the finished hem width. Example: Press under a one inch (2.5 cm) fabric width to sew a finished hem of 3/4 inch (2 cm).

Note: Set the seam width at 3.5 cm.

Close-up of a hand using a sewing machine to cut a component (no visible text or symbols)

Finishing sewing:

1. When sewing to the end of the fabric: Tightly hold the threads at the end of the seam. Sew slowly off the fabric while lightly pulling the threads toward the rear of the machine.

Note: The differential feed may need to be adjusted slightly to allow your fabric to lie, perfectly smooth. Test your settings first on a piece of scrap fabric. 51

Technical line drawing of a sewing machine needle and fabric (no text or symbols)

1. If not to sew to the end of the fabric, e.g. sewing tubular fabrics:

Sew 4-5 stitches on top of each other. During the last stitch, turn the hand wheel towards you until the needles pierce the fabric and you have heard each needle "click" (just before the needles are in the lowest position).

Close-up of a hand using a sewing machine to cut fabric (no visible text or symbols)

After the second "click" (if sewing a 2-needle cover stitch) or the third "click" (if sewing a 3-needle cover stitch) turn the handwheel away from you until the needles are in their highest position. Raise the presser foot. Press and hold the Tension Release Key 10. Hold the threads tightly at the end of the seam and pull the fabric from the machine. Cut the threads. Pull the threads through to the back of the fabric and knot them.

Mechanical sewing machine with needle and base mount (no visible text or symbols)

Edge guide

Push the edge guide, from the accessory box, into the guide holder A from the left. The edge guide can be set as required by sliding it to the left or right.

Mechanical device with attached components, possibly a sewing machine or industrial machine (no visible text or symbols)

The edge guide is useful for serging seams at regular intervals with the cover stitch or two thread chainstitch.

Top side Underside

5-thread safety-stitch seam

Program 20

Since the 5-thread safety-stitch seam consists of the 2-thread chainstitch and the 3-thread overedge seam, you can refer to the correction possibilities of these seams below and on page 55.

Top side Underside

4-thread safety-stitch seam

Program 19

Since the 4-thread safety-stitch seam consists of the 2-thread chainstitch and the 2-thread flatlock, you can refer to the correction possibilities of these seams below and on page 57.

Note: Attach the converter (see page 33), when sewing a 4-thread safety-stitch seam.

Top side Underside

2-thread chainstitch

Program 04

When all tensions are correctly set, the needle thread (blue) is just slightly visible on the underside of the fabric.

Top side Underside

The needle thread (blue) is too loose, causing larger needle thread loops on the underside of the fabric.

Set the blue thread tension to a higher value.

Top side Underside

4-thread overedge seam
Program 18

When all tensions are correctly set, the loops of both looper thread (pink and yellow) are directly on the edge of the fabric.

Top side Underside

The needle threads (blue and green) are too loose, causing larger loops of needle thread on the underside of the fabric.

Set the blue and green thread tension to a higher value.

Top side Underside

The upper looper thread (pink) appears on the underside of the fabric.

Set the pink thread tension to a higher value and/or the yellow thread tension to a lower value.

Top side Underside

The lower looper thread (yellow) appears on the top side of the fabric.

Set the yellow thread tension to a higher value and/or the pink thread tension to a lower value.

Top side Underside

3-thread overedge seam

narrow and wide

Program 10 and 11

When all tensions are correctly set, the loops of both looper threads (pink and yellow) are directly on the edge of the fabric.

Top side Underside

The needle thread is too loose, causing loops on the underside of the fabric.

Set the relevant needle thread tension to a higher value.

Top side Underside

The upper looper thread (pink) appears on the underside of the fabric.

Set the pink thread tension to a higher value and/or the yellow thread tension to a lower value.

Top side Underside

The lower looper thread (yellow) appears on the top side of the fabric.

Set the yellow thread tension to a higher value and/or the pink thread tension to a lower value.

Top side Underside

3-thread flatlock
narrow and wide
Program 13 and 14

Top side Underside

The needle thread is too tight.
Set the needle thread tension (blue) to a lower value.

Top side Underside

The upper looper thread (pink) appears on the underside of the fabric.
Set the pink thread tension to a higher value.

Top side Underside

The lower looper thread (yellow) is too loose.
Set the yellow thread tension to a higher value.

Top side Underside

2-thread flatlock
narrow and wide
Program 05 and 06

When all tensions are correctly set, the loops of both threads are directly on the underside of the fabric.

Note: If you want to sew the 2-thread flat-lock seam, then you will need to attach the converter (see page 33).

Top side Underside

The needle thread is too loose or the lower looper thread (yellow) is too tight.

Set the relevant needle thread tension to a higher value and/or the yellow thread tension to a lower value.

Top side Underside

The lower looper thread (yellow) is too loose and/or the needle thread is too tight.

Set the yellow thread tension to a higher value and/or the relevant needle thread tension to a lower value.

Top side Underside

3-thread flat hem Program 16

Top side Underside

The right needle thread (green) is too loose. Set the green thread tension to a higher value.

Top side Underside

The upper looper thread (pink) appears on the underside of the fabric.

Top side Underside

The lower looper thread (yellow) appears on the top side of the fabric.
Set the pink thread tension to a higher value and/or the yellow thread tension to a lower value.
Set the yellow thread tension to a higher value and/or the pink thread tension to a lower value.

Top side Underside

3-thread rolled hem (folded) Program 17

Top side Underside

The right needle thread (green) is too loose. Set the green thread tension to a higher value.

Top side Underside

The upper looper thread (pink) only partly loops around the fabric edge.

Top side Underside

The lower looper thread (yellow) appears on the top side of the fabric.
Set the pink thread tension to a lower value and/or the yellow thread tension to a higher value.
Set the yellow thread tension to a higher value and/or the pink one to a lower value.

Top side Underside

2-thread flat hem

Program 08

Note: If you want to sew the 2-thread flat hem, then you will need to attach the converter (see page 33).

Top side Underside

The right needle thread (green) is too loose.

Set the green thread tension to a higher value and/or the yellow thread tension to a lower value.

Top side Underside

The lower looper thread (yellow) is too loose.

Set the yellow thread tension to a higher value.

Top side Underside

2-thread rolled hem (folded)

Program 09

Note: If you want to sew the 2-thread rolled hem, then you will need to attach the converter (see page 33).

Top side Underside

The right needle thread (green) is too loose.

Set the green thread tension to a higher value and/or the yellow thread tension to a lower value.

Top side Underside

The lower looper thread (yellow) is too loose.

Set the yellow thread tension too a higher value.

Top side Underside

2-needle 3-thread overedge seam
Program 15
Note: If you want to sew the 2-needle 3-thread overedge seam, then you will need to attach the converter (see page 33).

Top side Underside

The left needle thread (blue) is too loose.
Set the blue thread tension to a higher value.

Top side Underside

The right needle thread (green) is too loose.
Set the green thread tension to a higher value.

Top side Underside

The lower looper thread (yellow) is too tight.
Set the yellow thread tension to a lower value.

Thread chart for 2-, 3- and 4-thread overedge seams
Fabric	Thread	Stitch length
Light fabrics:organdy, fine knitwear,taffeta, silk, lining fabrics	Cotton no. 50 - 70Synthetic thread no. 70 - 140	2.0 - 4.0 mm
Medium-heavy fabrics:cotton, tricot, linen,dress fabrics	Cotton no. 40 - 60Synthetic thread no. 70 - 140	2.0 - 4.0 mm
Heavy fabrics:tweed, suit fabrics,denim, heavy cloth	Cotton no. 30 - 50Synthetic thread no. 70 - 140	2.0 - 4.0 mm
Knitwear:	Cotton no. 40 - 60Synthetic thread no. 70 - 140	2.0 - 4.0 mm
2 or 3-thread rolled hems	Polyester thread no. 120 - 140Mercerized thread (bulk thread)	1.0 - 2.0 mm

Close-up of a mechanical device with internal components and a person in safety gear (no visible text or symbols)

Removing the needle plate

Raise the presser foot and move the needle(s) to the highest position. Remove the presser foot and open the swivel plate. Press down the needle plate disengaging lever 33. The needle plate 18 is raised out of its mount. The needle plate can be removed to the left.

Note:

The machine should be unthreaded when removing the needle plate.

Black-and-white photo of a person operating a large mechanical device, possibly a robotic or industrial machine (no visible text or symbols)

Inserting the needle plate

Place the needle plate to the rear on the guide pin (A) and press down at the front until you hear it click into place.

Interior view of a sewing machine with visible mechanical components and control panel (no text or symbols)

Machine maintenance

Cleaning the machine

Switch off the electrical power

Remove the trimming waste box and open the looper cover and swivel plate. Disengage the upper blade (see page 31) and remove the presser foot and the needle plate.

Use the accessory brush provided to remove any waste thread from the upper and lower blades, the differential feed and the looper area.

Mechanical assembly diagram showing internal components and parts (no visible text or labels)

Close-up of a hand holding a small object, possibly cleaning or cleaning a surface (no visible text or symbols)

Lubricating the machine

Switch off the electrical power

Move the upper overedge looper into its highest position. Lubricate the points shown above with the oil provided (located in the accessory box) every time you clean the machine. One or two drops of PFAFF sewing machine oil are sufficient. All other parts are manufactured from special materials and do not require any lubrication.

Cleaning the rubber feet

Clean the rubber feet from time to time with alcohol. This ensures good stability.

Close-up of a hand using a tool to adjust or install electronic components (no visible text or symbols)

Changing the upper blade

Switch off the electrical power

To remove: Set the adjusting knob for seam width to 3.5 mm. Fasten the upper blade (see page 35) before loosening the fastening screw A with the wrench provided in the accessory box. Then remove the upper blade.

Close-up of a hand operating a sewing machine with visible wiring and components (no text or symbols)

To insert: Attach the new upper blade and gently tighten the fastening screw. Then turn the handwheel until the upper blade is in the lowest position.

0.5~1.0mm

In this position the front edge of the upper blade must be 0.5 to 1.0 mm lower than the cutting edge of the lower blade. When the upper blade has been properly inserted you can fully tighten the fastening screw. Loosen the screw to the movable upper blade.

Interior view of a kitchen appliance with a showerhead and a bowl (no visible text or symbols)

Changing the light bulb

Switch off the electrical power

Using the screw driver in the accessory box loosen the fastening screw to the sewing light cover 23 until this can be removed.

Person operating a mechanical device with a circular component and a triangular base (no visible text or symbols)

Push the light bulb fully into its socket, during which pin A moves upward. Rotate counterclockwise through half a turn and remove.

Close-up of hands operating a mechanical device with a labeled component (no visible text or symbols)

Guide the new light bulb (max. 5 W) into the socket and twist until both pins on the bulb click into place. Press the bulb right into the socket, twisting it clockwise until it is securely fixed.

Replace the sewing light cover and tighten the fastening screw.

Special Accessories

This machine offers a wide range of special accessories for special serging details. Consult your PFAFF dealer.

Special accessory	Order No.	Use
Multi-purpose foot M	29 924 993 82-002	Foot, to which guides H1, H2 and H3 can be attached
Lace and braiding guide H1	29 924 993 82-003	Guide for applying lace or braiding (to the under side of the fabric)
Hemmer guide H2	29 924 993 82-001	Guide for hemming/turns under one inch while serging
Bias-tape guide H3	29 924 993 82-004	Guide for applying bias tape as edging
Clear foot N	29 924 993 82-006	Presser foot with groove It can be used together with guide N1
Faggoting guide F2	29 924 993 82-008	Guide for joining two pieces of fabric with consistent clearance. Use transparent presser foot F from the accessory box
Lace guide F3	29 924 993 82-005	Guide for applying lace (on the upper side of the fabric). Use transparent presser foot F from the accessory box
Flat-felled-seam guide F4	29 924 993 82-009	Guide for sewing flat-felled seams Use transparent presser foot F from the accessory box
Fancy-stitch guide N1	29 924 993 82-007	For stitching down a double chainstitch or a 3-thread overedge seam and for decorative effects
Cording foot K	9 924 993 82-011	For serging cording with the cording tongue K1 and the guide K2
Cording tongue K1	29 924 993 82-012	For serging pintucks
Cording guide K2	29 924 993 010	For serging cording with gimp thread
Strap and belt-loop foot L	29 924 993 82-013	For sewing belt loops and straps, and for ornamental stitches with a cover stitch
Universal tape binder	29 924 993 82-014	For binding fabric edges with various widths of pre-made bias tape
Beading foot P	29 924 993 82-015	For serging on beading and sequins
Bead needle plate P	29 924 993 82-016	The bead needle plate P together with the beading foot P allows you to serge on beading and make a rolled hem simultaneously.
Multi-purpose foot C	29 924 993 82-017	For sewing on bands, elastic tape, elastic thread and fishing line together with the various elastic tape inserts
Elastic tape insert 7.5 mm	29 924 993 82-034	For sewing on elastic tape with a width up to 7.5 mm
Elastic tape insert 10 mm	29 924 993 82-035	For sewing on elastic tape with a width from 7.5 mm - 10 mm
Elastic tape insert 13 mm	29 924 993 82-036	For sewing on elastic tape with a width from 10 mm - 13 mm
Shirring/Gathering foot G	29 924 993 82-018	For shirring/gathering and joining two pieces of fabric simultaneously
Blindstitch foot D	29 924 993 82-019	For serging blind hems and ornamental seams
Band and braiding foot Q	29 924 993 82-020	For sewing on bands and braiding. Gimp cords and thread and bands with decorative threads can be stitched over using this foot together with guide K2
Accessory holder	29 924 993 82-021	Holder, to which the following accessories together with the retaining screw and the swiveling arm can be attached.
Retaining screw	29 924 993 82-023	For securing the following accessories to the accessory holder
Edge guide with units of measurement	29 924 993 82-022	For guiding the fabric edge and measuring cut widths and seam widths simultaneously (use the machine's standard presser foot)
Gathering/ Shirring tongue	29 924 993 82-027	For gathering/shirring and joining two pieces of fabric simultaneously (use the machine's standard presser foot).
Tape binder 40 mm	29 924 993 82-031	For binding the fabric edge with 40 mm tape. Binding width 10 - 12 mm. (Use the machine's standard presser foot.)
Swiveling arm	29 924 993 82-024	For attaching the following accessories to the accessory holder
Curved-seam guide	29 924 993 82-025	For serging a curved piece to a straight piece of fabric (use the machine's standard presser foot).
Piping and welting foot E	29 924 993 82-028	Presser foot for guiding and sewing in piping and welting
Piping and welting accessory	29 924 993 82-030	Together with piping foot E, for binding and guiding piping and gimp between two layers of fabric

Sewing problems and their solutions

This machine has been developed with ease of operation in mind. No difficult or tricky settings need to be made. Sewing problems of the kind described below may occur as a result of minor adjustment and operating errors. They can be easily adjusted by following the instructions.

Problem	Cause	Solution
Needle breakage	The needle was bent or the point damaged.	Insert new needle.(see page 13)
	The needle was not fully inserted.	Insert needle fully(see page 13).
	The fabric was pulled too firmly.	Do not pull on the fabric when sewing.
Thread breaks	Incorrectly threaded.	Thread properly(see page 14 - 23).
	Thread has caught.	Check if the thread is caught on the spool stand etc
	Thread tension is too tight.	Correct the tension(see page 49 – 62).
	Needle not fully inserted.	Insert needle correctly(see page 13).
	Incorrect needle used.	Use needle systemEL X 705.
Skipping stitches	Needle bent or point damaged.	Insert new needle(see page 13).
	Needle not fully inserted.	Insert needle correctly(see page 13).
	Incorrect needle used.	Use needle systemEL X 705.
	Incorrectly threaded.	Thread correctly(see page 14 - 23).
Stitch formation faulty	Incorrect setting of thread tensions	Re-set thread tensions(see page 49 – 62).
3 or 4 thread overedge seam has an irregular appearance and the upper looper thread has not interlocked in the seam.	The converter is attached.	The converter must be removed (see page 33).
Machine will not operate although master switch is on.	Power supply interrupted	Close looper cover (see page 8)
Fabric not neatly trimmed	Waste thread between upper and lower bladeUpper blade is blunt.	Clean blades.Replace upper blade (see page 66).
Puckered seams	Thread tension too tight.Incorrect setting of differential feed.Thread has caught due to incorrect threading.	Reduce thread tensionRe-adjust differential feed (see pages 38, 39)Thread correctly (see pages 14 - 23).
Fabric not fed through evenly	Stitches too shortSewing foot pressure too low for heavy fabrics.Sewing foot pressure too high for lightweight fabrics.	Increase stitch length see page 35)Increase sewing foot pressure (see page 29).Reduce sewing foot pressure (see page 29).

Specifications

Maximum sewing speed	1500 stitches/min.
Seam width	1.4 mm - 9.0 mm
Cover stitch width	2.5 mm, 5 mm
Stitch length	0.5 mm - 4 mm
Presser foot	exchangeable
Lubrication	manual
Presser foot height	4.5 mm
Overedge stroke	2.0 mm
Needle system	EL X 705, cat no. 2002
Needle size	80/12, 90/14
Number of threads	2, 3, 4, 5
Dimensions (width x height x depth)	355 x 290 x 300 mm
Weight	10 kg

Packing contents

1 machine

1 foot control

1 instruction manual/guarantee card

1 waste container

1 machine cover

1 accessory box

1 power table

Parts of the coverlock 4872

38 Thread guides with color coding
39 Telescoping thread guide
40 Thread chain cutter
41 Thread spool stand
42 Thread spool pin
43 Cone thread adapter
44 Spool disc
45 Machine socket, power cord
46 Electrical power master switch
47 Machine socket, foot control
48 Handwheel
49 Regulator wheel for differential feed
50 Stitch length adjustment knob
51 Presser foot lifter
52 Rear thread guides

53 Waste container

54 Foot control

55 Power cord

56 Accessory box

57 Power table

38 39 40 52 51 50 49 48 46 47 45 44 43 42 41

53 ELECTRONIC 54 55 56 57

G. M. Pfaff

Aktiengesellschaft

Information subject to change without notice.

No.: 29-629 989-54/000

Englisch · 11/98