Baby Lock Lauren BL450A Instruction and Reference Guide

INSTRUCTION AND REFERENCE GUIDE

This sewing machine is intended for household use.

IMPORTANT SAFETY INSTRUCTIONS

When using a sewing machine, basic safety precautions should always be followed, including the following. Read all instructions before using.

DANGER - To reduce the risk of electric shock:

1. Never leave unattended when plugged in. Always unplug this machine from the electric outlet immediately after using and before cleaning.

2. Always unplug before relamping. Replace bulb with same type rated 10 Watts.

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

1. Do not allow to be used as a toy. Close attention is necessary when this sewing machine is used by or near children.

2. Use this sewing machine only for its intended use as described in this manual. Use only 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 sewing machine to the nearest authorized retailer 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 controller free from the accumulation of lint, dust, and loose cloth.

5. Never drop or insert any object into any opening.

6. Do not use outdoors.

7. Do not operate where aerosol (spray) products are being used or where oxygen is being administered.

8. To disconnect, turn the power switch to the off position, then remove plug from outlet.

9. Do not unplug by pulling on cord. To unplug, grasp the plug, not the cord.

10. Keep fingers away from all moving parts. Special care is required around the sewing machine needle and knives.

11. Always use the proper needle plate. The wrong plate can cause the needle to break.

12. Do not use bent needles.

13. Do not pull or push fabric while stitching. It may deflect the needle causing it to break.

14. Switch the sewing machine off when making any adjustments in the needle area, such as threading needle or loopers, changing needle, blade, or needle plate.

15. Always unplug the sewing machine from the electrical outlet when removing covers, lubricating, or when making any other user servicing adjustments mentioned in this manual.

SAVE THESE INSTRUCTIONS

TABLE OF CONTENTS

SPECIFICATIONS ..................................................... 1

GETTING TO KNOW YOUR SERGER ..................... 2

ACCESS TO THREAD GUIDES AND FREE ARM.... 3

ELECTRICAL CONNECTION.................................... 4

ACCESSORIES ......................................................... 4

INSERTING THE NEEDLE ........................................ 5

NEEDLE, THREAD AND FABRIC CHART................ 5

THREADING THE MACHINE .................................... 6

extension bar.......................................................... 6

threading the upper looper..................................... 7

threading the lower looper...................................... 8

threading the right and left needles........................ 9

easy thread changing -Tying On method ............... 9

BEFORE STARTING TO SEW ................................ 10

starting to sew ...................................................... 10

presser foot markings........................................... 10

end of seam ......................................................... 10

when thread breaks.............................................. 10

OVERLOCK SEWING (2-needle, 4-thread)............. 11

FOUR THREAD TENSION ...................................... 11

SETTING STITCH LENGTH .................................... 12

ADJUSTING THE DIFFERENTIAL FEED ............... 12

SETTING THE SEAM WIDTH ................................. 12

ADJUSTING THE PRESSURE ON FABRIC ........... 13

OVERLOCK SEWING (1-needle, 3-thread)............. 13

three thread tension ............................................. 13

NARROW AND ROLLED HEMMING ...................... 14

changing the needle plate.................................... 14

setting controls ..................................................... 14

NARROW HEM-Method A ....................................... 15

thread tension-Method A...................................... 15

ROLLED HEMMING-Method B................................ 15

thread tension-Method B...................................... 15

TWO THREAD SERGING ....................................... 16

to convert from 3-thread to 2-thread sewing ........ 16

thread tension ...................................................... 17

to convert from 2-thread to 3- or 4- thread sewing 17

FREE ARM SEWING ............................................... 17

BLIND HEMMING .................................................... 18

changing the presser foot .................................... 18

setting controls .................................................... 18

sewing ................................................................. 18

SEWING WITH THE UPPER BLADE DISENGAGED..

sewing ................................................................. 19

FLATLOCK SEAM ................................................... 20

setting controls .................................................... 20

thread tension...................................................... 20

sewing ................................................................. 20

PIN TUCKING .......................................................... 21

sewing ................................................................. 21

DECORATIVE OVERLOCK..................................... 21

TURNING CORNERS.............................................. 22

outside corner ...................................................... 22

inside corners ...................................................... 22

outside curves ...................................................... 22

CLEANING AND MAINTENANCE ........................... 23

cleaning................................................................ 23

oiling..................................................................... 23

changing the sewing light..................................... 23

changing the lower blade ..................................... 23

BEFORE YOU CALL FOR SERVICE ...................... 24

STITCH SELECTION CHART ................................. 25

SPECIFICATIONS

Stitch length 1-4 mm Differential feed ratio 0.7-2.0 Seam width Left needle: 6.2-7.2 mm, Right needle: 4.0-5.0 mm Needle bar stroke 27 mm Presser foot Hinged, Snap on type Presser foot lift 5 mm Needle Type Schmetz ELx705 or Organ HAx1, size 75-90/11-14 Number of threads 4, 3, 2 Dimensions Width: 290 mm x Depth: 230 mm x Height: 320 mm Net weight 6.7 kg

GETTING TO KNOW YOUR SERGER

15234678

11 12 13 14

1. Thread Guide Hanger

2. Extension Bar

3. Lower Looper Thread Tension Dial (Blue)

4. Upper Looper Thread Tension Dial (Green)

5. Thread Guide and Pretension Disc

6. Right Needle Thread Tension Dial (Yellow)

7. Left Needle Thread Tension Dial

17 16

(Red)

8. Pressure Regulator

9. Thread Take-up Lever

10. Presser Foot Lifter

11. Presser Foot Releasing Lever

12. Presser Foot

13. Free Arm

14. Extension Table

15. Extension Table Lock/Release Lever

16. Front Cover

17. Stitch Length Window

FRONT VIEW

18. Differential Feed Indicator

19. Stitch Length Regulator Dial (outside dial)

20. Differential Feed Regulator Dial (inside dial)

21. Handwheel

22. Light & Power Switch

23. Terminal Box

24. Spool Stand

25. Spool Pin

26. Cone Holders

27. Handle

22 23

26 25

REAR VIEW

INSIDE OF FRONT COVER AND FREE ARM COVER

1. Needle Clamp

2. Upper Blade Holder

3. Upper Blade

4. Needle Plate

5. Seam Width Knob

6. Upper Looper

7. Lower Looper

8. Lower Blade

2 3

ACCESS TO THREAD GUIDES AND FREE ARM

1. Place thumb in hollow of front cover and slide it to the right as far as possible; pull cover down toward you.

2. To close, lift cover up and it will snap into place.

3. Be sure that the cover is properly closed before starting to sew.

6 7 8

Opening the Extension Table Removing the Free Arm Cover

1. To unlock side cover, turn lever located on left side of Extension Table towards front of machine.

2. Pull Extension Table out to open.

3. To close and lock, push cover shut and turn lever toward back of machine. This locks the Extension Table to Free Arm Cover.

Swing Extension Table out with lever in locked position and Free Arm Cover will stay attached to the Extension Table.

ELECTRICAL CONNECTION

Connect the electrical cord to the machine by inserting the threehole plug into the terminal box located on the right side of the machine. Connect the cord plug into an electrical outlet.

Power Line Plug

POLARIZED PLUG INFORMATION

This appliance has a polarized plug (one prong 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.

LIGHT AND POWER SWITCH

The light and power switch is located on right side of machine in front of the terminal box. To turn power on, push the front side of the switch. Turning on the power, lights up the stitching area. The machine will not operate unless the switch is on.

FOOT CONTROL (Model YC-482) This foot control was designed exclusively for this machine, and is not to be used on any other machine, nor should any other foot control be connected to this machine. Place Foot control on floor where it is easy to reach with your foot. To make machine go faster, press down on foot control; to slow down the sewing speed, let up slightly on the foot control.

CAUTION:

Disconnect the electrical cord from the wall outlet when machine is not in use or when it is being cleaned. Turn the power switch to the “OFF” position before changing needles or needle plates, and before connecting the cord. This will help prevent accidents.

Light and Power Switch

Foot Control

ACCESSORIES

Needles ELx705/Organ HAx1 (#11 x 2) (#14 x 3)

Oiler Brush

Thread Caps

Allen Wrench

Screw Driver

Extra Lower Blade

Rolled Hem Needle Plate

Tweezers

Subsidiary Looper (for 2-thread sewing)

Thread Nets

Blind Hem Presser Foot

Subsidiary Looper Case

Accessory Case

INSERTING THE NEEDLE

Select the proper type and size needle for fabric used. (See below “NEEDLE, THREAD AND FABRIC CHART”.)

OFF

1. Turn electrical power off.

2. Turn handwheel toward you until the needle comes to its highest point.

Left Needle Clamp Screw

Flat Side

3. Use the allen wrench to loosen the Left and/or Right needle clamp screw, and remove the needle.

4. Place flat side of needle toward back of the machine, and insert in needle clamp as far as it will go.

5. Retighten the screw.

Right Needle Clamp Screw

Tighten

Loosen

NEEDLE, THREAD AND FABRIC CHART

The chart shows size and type of thread, and needle size for various weights and types of fabrics. Size means the fineness of both needle and thread.

FABRICS

LIGHTWEIGHT: organdy, voile, taffeta, lawn,

crepe. MEDIUM WEIGHT: gingham, satin, seersucker, linen,

velveteen, gabardine, broadcloth. HEAVY WEIGHT: denim, tweed, corduroy, pile

fabrics.

tricot

KNIT

jersey

wool

THREADS

Cotton #100 Silk #100 Spun #80-100 Tetron #90

Cotton #60-80 Silk #50 Spun #60-90 Tetron #60-80

Cotton #40-60 Silk #40-50 Spun #60-90 Tetron #50-60

Spun #60-80 Tetron #60-80 Woolly Nylon

Spun #60-80 Tetron #60 Woolly Nylon

Spun #60-80 Tetron #50-60 Woolly Nylon Woolly Tetron

NEEDLE SIZES

Schmetz ELx705;80/12

Organ HAx1; 75/11

Schmetz ELx705;80/12,

90/14

Organ HAx1; 75/11, 90/14 Schmetz ELx705; 90/14

Organ HAx1; 90/14

Schmetz ELx705;90/14

Organ HAx1; 75/11 Schmetz ELx705;80/12

or 90/14

Organ HAx1; 75/11, 90/14 Schmetz ELx705;90/14

Organ HAx1; 90/14

THREADING THE MACHINE

When threading, be sure to follow the directions given below. The machine must be threaded in the proper sequence in order to sew. An illustration for correct threading is inside the front cover of the machine.

The thread guides are identified with color markings corresponding to the thread to which they belong. Always thread the upper and lower loopers before threading the needles.

Threading Sequence

1. Upper Looper (Green)

2. Lower Looper (Blue)

3. Right Needle (Yellow)

4. Left Needle (Red)

extension bar

1. Pull the Extension Bar up as far as it will go.

2. Rotate the Thread Guide Hanger so that the Thread Guides are right above the spool pins. Stopper pegs will snap into position.

3. Place the spools or thread cones on spool pins.

When using thread on cones, place the cone over the cone holders on the spool pin.

Lower Looper Thread

Stopper

Upper Looper Thread

Right Needle Thread

Left Needle Thread

Thread spool nets are useful for synthetic threads which tend to drop off its holder. Cover the thread cones with the thread nets provided with the accessories. Bring thread end to the top of the machine.

Thread caps are also provided with the accessories. They are used when sewing with regular spools. Insert the stem of cap into the spool hole opposite the end with notch.

threading the upper looper

Open the front cover and thread upper looper thread as illustrated below in steps 1 to 9. Follow thread guides with green color markings on machine.

1. Pass thread through top guide from back to front.

2. Bring thread down and pass through thread guide and under pretension disc.

Threading chart inside front cover

3. Bring thread straight down through the slot so that it passes between the tension discs.

4. Hook thread from the left side.

5. Hook thread from the right side.

6. Hook thread from the bottom side and pull thread up.

7. Hook thread from the top side.

8. Hook thread from the bottom side and pull thread up.

9. Use tweezers to pass thread through the upper

looper hole front to back. Pull at least 7 cm (3 inches) of thread through the upper looper.

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