Bernina Bernette 38 operation manual

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Bernina Bernette 38 operation manual

Instruction Manual

Table of Contents

NAMES OF PARTS

7

 

 

Names of Parts

7

Standard Accessories

8

Extension table

8

Sewing Table and Accessory box

9

Free-arm sewing

9

Stitch overview

9

GETTING READY TO SEW

10

 

 

Connecting the Power Supply

10

Before Using Your Sewing Machine

10

Controlling Sewing Speed

11

Machine Operating Buttons

12

Touch Panel

14

LCD Display

14

Attaching and Removing the Presser Foot Holder

15

Changing the Presser Foot

15

Presser Foot Lever

16

Presser Foot Pressure Dial

16

Dropping or Raising the Feed Dog

16

Changing the Needle

17

Fabric and Needle Chart

17

Bobbin Winding and Inserting

18

Threading the Machine

21

Pattern Selection

24

Setting Mode

25

Adjusting the Thread Tension for a Straight Stitch

26

Adjusting the Needle Thread Tension for a Zigzag Stitch

27

BASIC SEWING

28

 

 

Straight Stitch sewing

28

Straight Stitch

30

Securing Stitch

30

Locking Stitch

30

Triple Straight Stitch

30

Stretch Stitch

31

Sculpture Stitch

31

New Sculpture Stitch

31

Zigzag

32

3-step zigzag

33

Overlock Stitch

33

Knit Stitch

34

Double Overedge Stitch

34

Zipper Sewing

35

Blindstitch

37

Adjusting the Needle Position

37

Bridge Stitch

38

Button Sewing

38

Attaching Elastic

39

Various Kinds of Buttonholes and Their Uses

40

Standard Buttenhole

41

Adjusting the Stitch Width and Density for Buttonholes

43

Round-End Buttonhole

43

Fine Fabric Buttonhole

43

Keyhole Buttonhole

44

Stretch Buttonhole

44

Antique Buttonhole

44

Buttonhole with cord

45

Darning Stitch

46

Bartack

47

Eyelet

47

DECORATIVE STITCHING

48

 

 

Vari-Overlock

48

Appliqué

48

Scallop Stitch

49

Smocking

49

Pintucking

49

Patchwork Piecing

50

Stippling Stitch

50

Fagoting

51

Satin Stitches

51

Fringing

52

Drawn Work

52

Cross Stitch

53

Decorative Stitches

53

Twin Needle Sewing

54

PROGRAMMING PATTERNS AND LETTERS

55

 

 

Programming the Pattern Combination

56

Programming Auto-thread Cutting

56

Bridge Stitches

57

Programming a Mirror Image

58

Sewing a Pattern Combination from the Beginning

59

Sewing the Current Pattern from the Beginning

59

Programming Letters

60

Reducing the Size of Letters

61

Viewing a Long Text

62

Deleting and Inserting a Letter (pattern)

62

Duplicating a Letter (pattern)

63

3

Stitch Adjustment of Programmed Patterns

64

Balance

66

CARE OF YOUR MACHINE

67

 

 

Cleaning the Hook Race and Feed Dog

67

Installing the Bobbin Holder

67

Problems and Warning Signs

68

TROUBLESHOOTING

69

 

 

STITCH PATTERN

70

 

 

Overview Mode 1-6

70

4

IMPORTANT

When using an electrical machine, basic safety precautions should always be followed, including the following:

Please read the instruction manual carefully before using this machine.

Keep the instruction manual at a suitable place with the machine and hand it over if you give the machine to a third party.

When the machine is not in use or left unattended, always disconnect the machine from the power supply system. Unplug it from the outlet.

DANGER!

To reduce the risk of electric shock:

1.Never leave the machine unattended when it is plugged in.

2.Always unplug this machine from the electric outlet immediately after using and before cleaning.

3.LED RADIATION: Do not look directly at the LED using an optical instrument.

WARNING!

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

1.The machine mustn’t be used by children under 8 or by people with reduced physical, sensory or mental capabilities or if there is a lack of experience and knowledge how to operate the machine. Unless they have been given instruction concerning the use of the machine and the involved risks by a person who is responsible for their safety.

2.Do not use this machine as a toy. Close attention is necessary when this machine is used by children, near children or people with reduced sensation.

3.Use this machine only for its intended use as described in this manual. Use only accessories recommended by the manufacturer.

4.Children should be supervised to ensure that they do not play with the machine.

5.Never operate this 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 machine to the nearest authorized dealer or service centre for examination, repair, electrical or mechanical adjustment.

6.Never operate the machine with any air openings blocked. Keep ventilation openings of the machine and the foot control free from accumulation of lint, dust, and loose cloth.

7.Keep fingers away from all moving parts. Special care is required around the machine needle.

8.Always use the proper stitch plate. Using the wrong stitch plate can result in needle breakage.

9.Do not use bent needles.

10.Do not pull or push the fabric while sewing. This can result in needle breakage.

11.Switch the machine off (“O”) when making any adjustments in the needle area, such as threading or changing the needle, threading the bobbin, or changing the presser foot, and the like.

12.Always unplug the machine when performing cleaning or maintenance worksuch as replacing the sewing light or when making any other user maintenance adjustments mentioned in the instruction manual (disconnect the power plug). Cleaning and maintenance work must not be carried out by children without supervision.

13.Never drop or insert any object into any openings.

14.Use this machine only in dry and protected areas. Never operate the machine in a damp or wet environment.

15.Do not operate the machine where aerosol spray products are being used or where oxygen is being administered.

16.To disconnect, turn the power switch to (“O”) (off), then remove the plug from the outlet. Do not unplug by pulling the cord, instead grasp the plug to pull it from the outlet.

17.If the supply cord of the foot control is damaged, it must be replaced by the manufacturer or an appropriate service agent or a similar qualified person in order to avoid endangerment.

18.Never place anything on the foot control.

5

19.The machine may only be used in combination with a foot control of the type YC-485-EC-1 (100-240 V area).

20.The sound pressure level during normal operation is lower than 75dB(A).

21.This machine is provided with double insulation (except U.S.A/Canada). Use only identical replacement parts. See instructions for Servicing of double-insulated products.

SERVICING OF DOUBLEINSULATED PRODUCTS

In a double-insulated product, two systems of insulation are provided instead of grounding. No grounding means is provided on a double-insula- ted product nor should a means for grounding be added to the product. Servicing a double-insula- ted product requires extreme care and knowledge of the system and should only be done by qualified service personnel. Replacement parts for a double-insulated product must be identical to those parts in the product. A double insulated product is marked with the words «DOUBLE INSULATION» or «DOUBLE INSULATED».

The symbol may also be marked on the product.

SAVE THESE INSTRUCTIONS!

WARNING:

This machine is intended for household use only. If used intensively or commercially, regular cleaning and especially attentive care is required.

Signs of wear and tear owing to intensive or commercial use are not covered automatically, even if they occur within the warranty period. The decision on how to deal with any such cases rests with the local authorised servicing staff.

PLEASE NOTE:

If the machine is stored in a cold room, it should be brought to a warm room about one hour before use.

Please note that on disposal, this product must be safely recycled in accordance with relevant National legislation relating to electrical/electronic products. If in doubt please contact your retailer for guidance. (European Union only)

All rights reserved

For technical and product improvement reasons, the machine‘s features, parts and accessory are subject to unannounced changes and alterations at any time. The accessory included can differ from country to country.

EUROPE ONLY:

This appliance may only be used by children over eight and by persons with reduced physical, sensory or mental capabilities or by persons who lack experience and knowledge of how to operate the machine under supervision, after instruction on how to use the equipment safely and once they have understood the potential dangers. Children shall not play with the appliance. Cleaning and user maintenance shall not be made by children without supervision.

OUTSIDE OF EUROPE (EXCEPT FOR THE USA AND CANADA):

This appliance may only be used by persons (including children) with reduced physical, sensory or mental capabilities or by persons who lack experience and knowledge of how to operate the machine under supervision and after instruction on how to use the equipment safely by a person responsible for their safety.

Children should be supervised to ensure that they do not play with the appliance.

6

NAMES OF PARTS

Names of Parts

Start/stop button

Reverse sewing button

Drawer for stitch overview

Auto-lock button

Needle stop up/down button

Thread cutter button

Twin Needle button

Slide speed control

Touch Panel

Hole for second spool pin

Bobbin winder stopper

Bobbin winder spindle

Spool disc large

Spool pin

LCD display

Upper thread guide

Presser foot pressure dial

Thread take-up lever

Thread tension dial

Head cover

Thread cutter

Needle Threader

Sewing table (accessory box)

Needle

Needle clamp screw

Presser foot holder

Stitch plate

Bobbin cover plate

Bobbin cover release button

Feed dog lever

Free arm

Buttonhole lever

Presser foot lever

Carrying handle

Handwheel

Power switch

Foot control connector

Power cable connection

Foot control

Power cable*

Balance

PLEASE NOTE:

To carry the sewing machine, hold the carrying handle with your hand, and support the sewing machine with the other hand.

Design and specifications are subject to change without prior notice.

*The power cable included may differ from the illustration.

7

Standard Accessories

Zigzag foot: A (set on the machine)

Overlock foot: C

Zipper foot: E

Satin stitch foot: F

Blindstitch foot: G

Button-sew-on foot: T

Open toe foot: F2

Buttonhole foot with slide:R

Needle assortment

Spool disc (X 2) (Large)

Spool disc (X 2) (Small) (1x set on the machine)

Second spool pin

Bobbin (X 4) (1x set in the machine)

Screwdriver

Lint brush

Seam ripper (buttonhole opener)

Spool net

Hard cover Extension table

More information on optional accessories can be found on our website:http://www.mybernette.com/accessories

Dust Cover

Sewing instructions for your own personalized dust cover are available at:

www.mybernette.com/cover

Extension table

Attaching the table

Pull the table away from the machine. Spread the legs of extension table.

Holding the table with both hands and slide it gently to the right.

Adjusting the table height

Turn setscrews of the table legs with a screwdriver (optional).

8

Sewing Table and Accessory box

The sewing table provides an extended sewing area and can be easily removed for free arm sewing.

Sewing table

Pin

Hole

Removing Sewing Table

Pull the table away from the machine, as illustrated.

Attaching Sewing Table

Push the sewing table, inserting the pin into the hole until the table snaps into the machine. Insert the second spool pin into the hole .

Accessory box

The accessories are stored inside the sewing table. Pull the lid towards you to open the accessory box .

Accessory box

Free-arm sewing

Free-arm sewing is useful for darning socks and mending the knee or cuff areas of children’s clothes.

Stitch overview

The stitch overview is stored in the drawer in the lower part of the sewing machine.

Drawer for stitch overview Stitch overview

Pull the drawer out with your finger as far as it will go. Turn pages to refer the stitch overview.

9

GETTING READY TO SEW

Connecting the Power Supply

Using the foot control

Switch off the power switch . Insert the foot control plug into the foot control jack . Insert the cable plug into the power cable connection . Insert the power supply plug into the wall outlet . Turn on the power switch . The foot control sign will be displayed when the foot control is connected to the machine.

Power switch

Foot control plug

Foot control jack

Cable plug

Power cable connection

Power supply plug

Wall outlet

Foot control sign

WARNING:

While in operation, always keep your eyes on the sewing area, and do not touch any moving parts such as the thread take-up lever, handwheel or needle.

Always turn off the power switch and unplug from the power supply:

-when leaving the machine unattended.

-when attaching or removing parts.

-when cleaning the machine.

Never place anything on the foot control.

Before Using Your Sewing Machine

Before using your sewing machine for the first time, place a scrap of fabric under the presser foot and run the machine without thread for a few minutes. Wipe away any oil which may appear.

• Using the start/stop button

Switch off the power switch .

Insert the cable plug into the power cable connection . Insert the power supply plug into the wall outlet .

Turn on the power switch .

Power switch

Cable plug

Power cable connection

Power supply plug

Wall outlet Start/stop button

PLEASE NOTE:

The start/stop button does not work when the foot control is connected.

Operating Instructions:

The symbol “0” on a switch indicates the “off” position of a switch.

For appliances with 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 it still does not fit, contact a qualified electrician to install the proper outlet. Do not modify the plug in any way (U.S.A. and Canada only).

* Foot control model YC-485EC-1 is used with this sewing machine.

10

Controlling Sewing Speed

Slide speed control

Sewing speed can be varied by the slide speed control according to your sewing needs.

To increase sewing speed, slide the slider to the right. To decrease sewing speed, slide the slider to the left.

Foot control

Depress the foot control to start the machine.

The further down you press on the foot control, the faster the machine runs.

The maximum sewing speed can be varied by the slide speed control.

PLEASE NOTE:

The machine will not run and the presser foot mark will blink if you start the machine with the presser foot in the highest position. Lower the presser foot and press the foot control.

11

Machine Operating Buttons

Start/stop button

Lower the presser foot lever.

Press the start/stop button to start the machine.

The machine will sew the left row first. The machine starts running slowly for the first few stitches, and it then runs at the speed set by the slide speed control.

Press the start/stop button again to stop the machine.

PLEASE NOTE:

The machine runs slowly as long as this button is being pressed.

The start/stop button cannot be used when the foot control is connected to the machine.

The machine will not run and the presser foot mark will blink if you start the machine with the presser foot in the highest position. Lower the presser foot and press the start/stop button.

Reverse sewing button

Mode 1

01, 02, 05, 06

 

Mode 2

01, 02, 05, 06, 13

 

Mode 3

01, 59, 60

 

Reverse

Hold the Reverse button

pressed.

sewing

 

 

Sewing

Release the Reverse button .

 

 

 

Reverse

Press the start/stop button

, the machine

sewing

stops.

 

slowly

Hold the Reverse button

pressed, the

 

 

machine sews in reverse slowly as long the

 

button is pressed.

 

 

 

 

 

 

 

Mode 1

07

 

Mode 2

07, 11, 28, 29

 

Function

Pages 30, 46, 47

 

Any other stitches

Press the reverse button , to sew a locking stitch immediately. The machine will automatically stop.

The exception is by all the eyelets and buttonholes, with which the reverse button remains without function.

Auto-lock button

Mode 1

01, 02, 05, 06

Mode 2

01, 02, 05, 06, 13,

Mode 3

01, 59, 60

Function

Press the Auto-lock button , to sew a locking

 

stitch immediately. The machine will automati-

 

cally stop.

 

 

Any other stitches

Press the auto-lock buttonto sew a locking stitch at the end of current pattern.

The machine will automatically stop.

12

Needle stop up/down button

Press the needle stop up/down Button to bring the needle up or down.

Thread cutter button

Press the thread cutter button to trim the threads after sewing.

The thread cutter mark will blink , while the machine cuts the threads.

You can continue sewing without pulling the bobbin thread up after trimming the threads.

To trim the threads automatically after sewing, select the desired stitch pattern, then press and hold the thread cutter button until the thread cutter mark appears .

The machine will trim the threads automatically after the locking stitch then stop when the Reverse sewing stitch or autolock button is pressed, or a pattern has the auto-lock stitch programmed.

PLEASE NOTE:

Use the thread cutter on the head cover if the thread is #30 or thicker.

Twin Needle button

Press the twin needle button when using a twin needle. The twin needle mark will appear when it is activated.

To cancel or finish the twin needle sewing, press the twin needle button twice.

PLEASE NOTE:

When the twin needle mark is blinking, all the other keys and buttons will not be responding. Press the twin needle button again. For twin needle sewing, please refer to page 54.

13

Touch Panel

Mode button

When the power switch is turned on, the direct pattern selection (mode 1) is set automatically.

Press the mode button to change the mode. Refer to page 24.

Clear button

Press the clear button to clear the memorized stitch pattern.

Press and hold the clear button until the buzzer beeps to clear all memorized stitch patterns. Refer to page 62.

Mirror Image button

Press the mirror image button to flip the selected stitch pattern horizontally. Refer to page 58.

Memory button

Press the memory button to memorize the selected pattern. Refer to page 56.

Number button (Refer to page 24)

•• Direct pattern selection

You can select the stitch patterns from 01 to 10 directly in mode 1 (direct pattern selection mode).

•• Numeric pattern selection

Enter a 2-digit pattern number to select the desired stitch pattern in mode 2 to 6.

Stitch width button

Press “” or “ ”, to change the stitch width. Refer to page 29, 32.

Stitch length button

Press “” or “ ”, to change the stitch length. Refer to page 29.

Cursor

Press “” or “ ”, to move the cursor to check or edit the pattern combination. Refer to page 62.

LCD Display

The LCD display shows the following information when the machine is turned on.

Stitch pattern

Mode

Stitch pattern number

Type of presser foot

Stitch width Stitch length

14

Attaching and Removing the Presser Foot

Holder

CAUTION:

Turn OFF the power switch before removing or attaching the presser foot holder.

Removing Presser foot holder

Remove the setscrew by turning it counterclockwise with a screwdriver.

Attaching Presser foot holder

Match the hole in the presser foot holder with the threaded hole in the presser bar.

Fit the setscrew into the hole.

Tighten the setscrew by turning it clockwise with the screwdriver.

Setscrew

Presser foot holder

Hole Threaded hole

Changing the Presser Foot

CAUTION:

Turn OFF the power switch before changing the foot. Always use the proper foot for the selected pattern.

The wrong foot can cause the needle to break. Each foot is marked with an identification letter.

Identification letter

Removing the presser foot

Raise the needle to its highest position by turning the handwheel counterclockwise. Raise the presser foot, and press the lever on the back of the presser foot holder.

Lever

Attaching the presser foot

Place the desired presser foot, so that the pin on the foot lies just under the notch on the presser foot holder.

Lower the presser foot lever to lock the foot in place.

Notch Pin

15

Presser Foot Lever

The presser foot lever raises and lowers the presser foot.

You can raise the foot about 1/4˝ (0.6 cm) higher than the normal up position for easy removal of the presser foot, or to help you place thick material under the foot.

Presser foot lever Normal up position Highest position

Presser Foot Pressure Dial

The presser foot pressure dial should be set at “6” for regular sewing.

Set the pressure between “3” and “6” for appliqué, cutwork, drawn work, basting and embroidery.

Set the pressure between “1” and “3” when sewing chiffon, lace, organdy and other fine fabrics.

Velour and knits with a lot of stretch may also require a “1” setting.

Turn the presser foot pressure dial and set the desired number.

Presser foot pressure dial

Dropping or Raising the Feed Dog

The drop feed dog lever is located underneath the free arm bed on the back of the machine.

To drop the feed dog, push the lever in the direction of the arrow .

To raise the feed dog, push the lever in the direction of the arrow , as illustrated, and turn the handwheel toward you .

The feed dog must be up for normal sewing.

16

Fabric

 

Thread

Needle

 

Lawn

 

 

 

Georgette

Silk #80-100

#9/65-11/75

Fine

Tricot

Cotton #80-100

Needle with

 

Organza

Synthetic #80-100

blue shank

 

Crepe

 

 

 

Sheeting

Silk #50

 

 

Jersey

 

Medium

Cotton #50-80

#11/75-14/90

Broadcloth

 

Synthetic #50-80

 

 

Fleece

 

 

 

 

 

Denim

Silk #30-50

 

Heavy

Tweed

 

Cotton #40-50

#14/90-16/100

weight

Coating

Synthetic #40-50

 

 

Quilting

 

 

 

 

Changing the Needle

CAUTION:

Turn OFF the power switch before changing the needle.

Switch off the power switch. Raise the needle to its highest position by turning the handwheel counterclockwise and lower the presser foot. Loosen the needle clamp screw by turning it counterclockwise. Remove the needle from the needle clamp .

Insert a new needle into the needle clamp with the flat side to the rear. When inserting the needle into the needle clamp , push it up as far as it goes. Tighten the needle clamp screw firmly by turning it clockwise.

To see if the needle is good, place the flat side of the needle onto something flat (stitch plate, glass, etc.).

The gap between the needle and the flat surface should be consistent. Never use a bent or blunt needle. A damaged needle can cause permanent snags or runs in knits, fine silks and silk-like fabrics.

Needle clamp screw Needle clamp

Fabric and Needle Chart

•• Use a needle size of 11/75 or 14/90 for general sewing work.

•• A fine thread and needle should be used for sewing lightweight fabrics, so the fabric will not be marred.

•• Heavy fabric requires a needle large enough to pierce the fabric without the needle thread fraying.

•• Always test the needle size on a small scrap of the fabric that will be used for actual sewing.

•• In general, use the same thread for the needle and bobbin.

•• Use a blue shank needle when sewing flexible fabrics, very fine fabrics and synthetic fabrics. The blue shank needle effectively prevents skipped stitches.

PLEASE NOTE:

1 x Twin Needle, 1 x Needle with blue shank (No. 11/75),

2 x Needle No. 11/75 and 1 x Needle No. 14/90 are in the Needle assortment included. For optimal sewing results, we recommend using Organ needles.

17

Bobbin Winding and Inserting

Removing the bobbin

Gently slide the hook cover release button to the right and remove the hook cover plate.

Lift out the bobbin.

Hook cover release button

Hook cover plate

Bobbin

PLEASE NOTE:

Use the “J” plastic bobbins for horizontal hook (marked with “J” ). Using other bobbins, such as pre-wound paper bobbins, may cause stitching problems and/ or damage to the bobbin holder.

Setting the Spool of Thread

Horizontal spool pin

Lift up the spool pin. Place a spool of thread on the spool pin.

Attach the large spool disc, and press it firmly against the spool of thread so that the spool rests on the supporter.

Spool pin

Spool

Large spool disc Supporter

The small spool disc is used with narrow or small spools of thread.

Small spool disc

Second spool pin

The second spool pin is for winding bobbins without unthreading the machine.

Insert the second spool pin into the hole.

The second spool pin should point to the bobbin winder tension disc.

Draw the thread from the spool and pass the thread around the bobbin winding tension disc as shown.

Second spool pin

Hole for second spool pin

Bobbin winder tension disc

Spool net

Polyester or bulky nylon threads become loose while unwinding. To keep consistent feeding of such threads, pull the spool net over the spool.

18

Bobbin Winding

PLEASE NOTE:

Set the slide speed control at its fastest position for bobbin winding.

Draw the thread from the spool and pass the thread around the bobbin winding tension disc.

Bobbin winder tension disc

Thread through the hole in the bobbin from the inside to the outside.

Put the bobbin on the bobbin winder spindle.

Push the bobbin to the right.

The bobbin icon appears on the LCD display. Bobbin icon

With the free end of the thread held in your hand, start the machine. Stop the machine when it has wound a few layers, and then cut the thread close to the hole in the bobbin.

Start the machine. When the bobbin is fully wound, it will

stop automatically. Stop the machine and return the slide speed control position. Shift the bobbin winder spindle to the left for stitching. Cut the thread as shown.

PLEASE NOTE:

For safety purposes, the machine will automatically stop 1.5 minutes after starting bobbin winding.

Remove the bobbin. Cut the thread as shown. Return the slide speed control position.

19

Insert the bobbin

Put one bobbin on the bobbin winder spindle. Place a bobbin in the bobbin holder with the thread running off counterclockwise.

End of thread

Guide the thread into the first notch on the front side of the bobbin holder.

Notch

Draw the thread to the left, sliding it between the tension spring blades.

Continue to draw the thread lightly until the thread slips into the second notch . Pull out about 6˝ (15 cm) of thread.

Notch

Attach the hook cover plate. Check the threading. Refer to the diagram shown on the hook cover plate.

Threading diagramm

20

Threading the Machine

Raise the presser foot. Press the needle stop up/down button to raise the thread take-up lever to its highest position.

Needle stop up/down button

CAUTION:

Turn OFF the power switch before threading the machine.

Threading the Machine

Draw the end of the thread around the upper thread guide.

While holding the thread near the spool , draw the end of the thread down around the check spring holder .

Spool

Check spring holder

Firmly draw the thread up from right to left over the takeup lever, and down into the take-up lever eye.

Pass the thread through the lower thread guide. Slide the thread behind the needle bar thread guide on the left.

Thread the needle from front to back, or use the needle threader.

21

Needle threader

CAUTION:

Turn OFF the power switch when using the needle threader.

Lower the presser foot. Raise the needle to its highest position. Pull down the needle threader as far as it will go. The hook comes out through the needle eye from behind.

Knob

Draw the thread from guide (a) to guide (b) and under the hook . Draw the thread up along the right side of guide (b) and slip the thread in between guide (b) and the holder plate .

Hook Guide (a) Guide (b) Holder plate

Raise knob threader in the direction of the arrow, drawing the thread loop through the needle.

Pull the thread through the needle eye.

PLEASE NOTE:

The needle threader can be used with a #11 to #16 needle or a blue shank needle. Thread sizes 50 to 90 are recommended.

The threader can't be used for a twin needle.

22

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