COVER STITCH
"IMPORTANT SAFETY INSTRUCTIONS"
When using overlock machine, basic safety precautions should always be followed,
including the following.
Read all instructions before using this overlock machine.
DANGER To reduce the risk of electric shock.
1. The overlock machine should never be left unattended when plugged in. Always unplug this overlock machine from
the electrical outlet immediately after using and before cleaning.
2. Always unplug before replacing light bulb. Replace bulb with same type rated 15 watts/110 volts in 110V/120V area.
(15 watts 240 volts in 220V/240V area.)
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 the sewing machine is used by or near children.
2. Use this overlock machine only for its intended use as described in this manual. Use only attachments recommend
ed by the manufacturer as contained in this manual.
3. Never operate this overlock 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 overlock machine to the nearest authorized dealer or serv
ice center for examination, repair, electrical or mechanical adjustment.
4. Never operate the overlock machine with any air openings blocked. Keep ventilation openings of the overlock
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 main switch to the symbol "O" position which represents off, 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 overlock machine needle.
11. Always use the proper needle plate. The wrong needle 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(s) causing it to break.
14. Switch the overlock machine to the symbol "O" position when making any adjustments in the needle area, such as
threading needle, changing needle, threading looper, or changing presser foot, and the like.
15. Always unplug the overlock machine from the electrical outlet when removing covers, lubricating, or
when making any of the user servicing adjustments mentioned in the instruction manual.
16. Keep fingers away from moving parts, especially the area near the blades.
17. 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.
18. The appliance is not intended for use by young children or infirm persons without supervision.
19. Young children should be supervised to ensure that they do not play with the appliance.
"SAVE THESE INSTRUCTIONS"
"This overlock machine is intended for household use."
Welcome to the Baby Lock Cover Stitch Machine
Your Baby Lock Cover Stitch machine provides a variety of chain and cover stitches, allowing you to
create professional looking hems just like the readytowear fashions in stores. A variety of stitch
widths and lengths also provide options for creating the look you want.
Your Baby Lock Cover Stitch is a highquality, dependable machine. The patented JetAir Threading
system makes threading the looper a breeze. Speedy at 1300 stitches per minute, BLCS allows you
to complete hems quickly. Other features including differential feed,autotension release when the
presser foot is lifted, and manual tension adjustments put you in control of your project.
With proper care and maintenance, your Baby Lock Cover Stitch machine promises years of high
quality, dependable performance and sewing pleasure. Keep this instruction manual as a stepbystep
guide to become familiar with your Baby Lock.
Happy Sewing!
For additional product information visit our website at
www.babylock.com
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Table of Contents
OVERVIEW ..................................................................................................................4
How Your Machine Operates .................................................................................. 4
Overview of the Baby Lock ..................................................................................... 5
Accessories ............................................................................................................ 6
Needles ..................................................................................................................7
Thread ..................................................................................................................7
Optional Accessories .............................................................................................. 7
Accessory Adapter...................................................................................................8
Setting Up Your Baby Lock .................................................................................. 8/9
Side Cover .............................................................................................................. 9
Thread Cutter........................................................................................................ 10
Presser Foot Pressure Adjustment....................................................................... 10
Snapon Presser Foot........................................................................................... 10
Stitch Length ......................................................................................................... 11
Differential Feed.................................................................................................... 11
Chain/Cover Stitch Tension Dials.......................................................................... 12
Needle Tension Dial ................................................................................ 12
Chain Looper Tension Dial...................................................................... 12
THREADING ................................................................................................................13
Threading Preparation .......................................................................................... 13
Threading Your Baby Lock.................................................................................... 13
Locked Position for Threading .............................................................................. 13
Chain Looper .........................................................................................................14
Chain/Cover Needles............................................................................................ 15
Left Needle C1..................................................................................... 15
Center Needle C2................................................................................ 15
Right Needle C3 .................................................................................. 15
How to Use the Needle Threader ......................................................................... 16
Front Cover Seam Guide...................................................................................... 16
Rethreading Looper..............................................................................................16
Start to Sew .......................................................................................................... 17
To ChainOff of the fabric.......................................................................................17
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Table of Contents (Cont.)
CHAIN/COVER STITCH ............................................................................................... 18
Chain Stitching................................................................................................. 18/19
Chain Stitch Tension Adjustment.......................................................... 19
Cover Stitch Right Narrow 3mm................................................................. 20/21
Cover Stitch Tension Adjustment............................................................. 21
Cover Stitch Left Narrow 3mm .................................................................... 22/23
Cover Stitch Tension Adjustment............................................................. 23
Cover Stitch Wide 6mm............................................................................... 24/25
Cover Stitch Tension Adjustment............................................................. 25
Triple Cover Stitch 6mm ................................................................................ 26/27
Triple Cover Stitch Tension Adjustment................................................... 27
TECHNIQUES.................................................................................................................28
Turning Corners Chain Stitch ............................................................................. 28
Turning Corners Cover Stitch ............................................................................. 28
Flat Hemming Cover Stitch................................................................................. 29
Hemming in the Round Cover Stitch .................................................................. 29
Securing Chain and Cover Stitching..................................................................... 30
SPECIALTY THREADS.................................................................................................. 31
Using Specialty Threads ....................................................................................... 31
Light Weight Threads............................................................................................ 31
Medium Weight Threads....................................................................................... 31
Heavy Weight Threads ......................................................................................... 31
Bypassing the Threading Port .............................................................................. 32
Looper Threading Tool.......................................................................................... 33
Thread Cradle for Looper ..................................................................................... 34
Specialty Thread Guide Chart .............................................................................. 35
MAINTENANCE ............................................................................................................. 36
Troubleshooting............................................................................................... 36/37
Replacing Needles ............................................................................................... 38
Replacing Light Bulb............................................................................................. 39
Cleaning ............................................................................................................... 40
TECHNICAL DATA ......................................................................................................... 41
Technical data....................................................................................................... 41
STITCH SELECTION CHART........................................................................................ 42
Chart for Stitch Selection Setting for Chain/Cover ........................................................ 42
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How Your Machine Operates
Awareness of its simple operation will enable you to become more proficient in its use. Please read all
instructions before using your new machine.
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Use one, two or three chain/cover stitch needles and one looper for a chain or cover stitch.
When forming a chain stitch, the chain needle thread catches the chain looper to form a straight stitch
on the top of your fabric and thread chain loops on the underside. Use 2 or 3 cover stitch needles and
the chain looper to form a double or triple row of straight stitching on the top and a weave of thread on
the underside of your fabric.
After setting up your machine for the first time, take a few moments to learn how it sews. Before your
machine is threaded, turn the handwheel toward you and watch the operation of the various parts.
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Overview of the Baby Lock
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1. Presser foot pressure adjusting screw
2. Machine lock button release lever
3. Machine lock button
4. Presser foot thread release lever*
5. Looper threading lever
6. Thread cutter
7. Needle height viewing area
8. Needle clamp screw
9. Needle plate
10. Snapon presser foot
11. Side cover
12. Front table
13. Handwheel
14. Carrying handle
15. Stitch length dial
16. Accessory compartment & spool stand
17. Differential feed adjusting lever
18. Left needle tension dial
19. Center needle tension dial
20. Right needle tension dial
21. Looper tension dial
22. Needle drop drawer
23. Chain looper threading port
24. Telescopic thread guide and antenna
25. Power switch
26. Attachment screw holes
* Raising the presser foot releases needle
threads.
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Accessories
Your Baby Lock has a builtin accessory compartment. To open, swing the "lid" on the thread spool
stand to the right to reveal the tray holding some of the accessories listed below. Others may be found
in the machine packing materials.
Accessory Number included Located in
Instruction manual 1 Packing box
Guide fixing screws for table 2 Accessory compartment
Lint brush/needle insert tool 1 Accessory compartment
Package of assorted sized needles 1 Accessory compartment
Organ ELx705CF
Allen screwdriver 1 Accessory compartment
Tweezers 1 Accessory compartment
Needle threader 1 Accessory compartment
Chain/Cover stitch needle screws 2 Accessory compartment
Accessory adapter(for Optional Accessories) 1 Accessory compartment
Looper threading tool 1 Accessory packet
Screwdriver 1 Accessory packet
Machine cover 1 Accessory packet
Mounting bolt with washer(U.S.A. only) 1 Accessory packet
Thread nets 4 Accessory packet
Spool caps 4 Accessory packet
Sponge disks 4 Accessory packet
Cone holders 4 On machine
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Needles
Your Baby Lock is set up with Organ ELx705CF needles size 90/14. This is suitable for most medium
and heavy weight fabrics. For light weight fabrics use size 80/12, ELx705CF needles. The ELx705CF
needle is a semiballpoint design and is suitable for knits and wovens.
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Thread
All types of thread may be used on your Baby Lock, but 100% longstaple polyester thread, cross
wound on a cone, consistently provides the best stitch performance. Because the threads must pass
through several thread guides at high speeds, they must be of uniform thickness and high strength
with a minimum amount of linting.
Goodquality cotton or cottoncovered polyester threads sew well, though they produce more lint, cre
ating the need to clean the machine more frequently. Poor grades of thread can result in frequent
fraying, breaking and unbalanced stitches.
Threads of other fiber contents and weights may be used, depending on their strength and thickness.
Testing will help you determine how easily they can pass through the thread guides, thread slots, nee
dles and loopers.
Important Note: For maximum performance of the Baby Lock, it is recommended to use "100% poly
esterlong fiber thread". Recommended brands are MaxiLock and Metrosene. This thread also per
forms best when used with many decorative threads for sewing specialty decorative techniques.
Optional Accessories
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(CHAIN/COVER STITCH OPTIONAL ACCESSORIES)
Belt Loop Folder (3/4", 19mm) ROB0421S12AE (BLE8S12)
Belt Loop Folder (11/2", 38mm) ROB0421S11AE (BLE8S11)
Single Fold Bias Binder (28mm) ROB0421S04AE (BLE8S4)
Single Fold Bias Binder (40mm) ROB0421S05AE (BLE8S5)
Double Fold Bias Binder (11/8", 28mm) ROB0421S03AE (BLE8S3)
Double Fold Bias Binder (13/8), 36mm) ROB0421S02AE (BLE8S2)
Elastic Gatherer Bracket U.S.A. only (BLE8GG)
Elastic Guide for Gatherer Bracket (1/4", 7.5mm) U.S.A. only (BLE8EG7)
Elastic Guide for Gatherer Bracket (3/8", 10mm) U.S.A. only (BLE8EG10)
Elastic Guide for Gatherer Bracket (1/2", 13mm) U.S.A. only (BLE8EG13)
Fabric Guide ROB0420S01AE (BLE8FG)
Plain Hemmer (1/4", 7.5mm) ROB0421S07AE (BLE8S7)
Plain Hemmer (1/2", 13mm) ROB0421S06AE (BLE8S6)
Single Downturn Feller (1/4", 7.5mm) ROB0421S10AE (BLE8S10)
Single Downturn Feller (5/8", 16mm) ROB0421S08AE (BLE8S8)
Single Downturn Feller (1", 25mm) ROB0421S09AE (BLE8S9)
Knit/Woven Double Fold Bias Binder (8mm) ROD13408E (BLCSDFBB8)
Knit/Woven Double Fold Bias Binder (10mm) ROD13410E (BLCSDFBB10)
Knit/Woven Double Fold Bias Binder (15mm) ROD13415E (BLCSDFBB15)
Clear Foot B5002K03AE (BLCSCLF)
Pintuck Foot w/2 Guides ROB500206BCE (BLCSPTF)
NOTE:
・Use the front two Attachment Screw Holes for the Knit / Woven Double Fold Bias Binder.
・Use the back two Attachment Screw Holes with the Accessory Adapter for the Optional
Accessories.
These optional accessories are available at your Baby Lock retailer.
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Accessory Adapter
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・Place Accessory Adapter over the back two holes of the front cover table.
・Place the accessory bracket on top of the Accessory Adapter.
・Insert the Guide Fixing Screws to hold the Accessory Adapter and Accessory in
place.
Setting Up Your Baby Lock
1. Remove machine from box
After removing the packing materials from the
box, gently lift your Baby Lock by grasping the
handle provided on the top of the machine.
Place the machine on a sewing table or any
level surface that provides ample work area to
the left. Place the foot controller in a pedal stay,
if desired, and place it under the sewing table.
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2. Plug in the machine
Plug the power cord into the machine first, then
into a wall outlet. The power switch is located
toward t h e back on t h e ri g h t side of t h e
machine. Always make sure the power is off
when t h e ma c h i n e is not in use ( f i g . A ) .
Available foot controller for U.S.A.: Model YC
482 or YC420W.
3. Polarized plug
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.
4. Foot controller
The sewing speed of the machine is deter
mined by the amount of pressure applied to the
foot controller. When not in use, do not place
anything on the foot controller, or the machine
could start inadvertently and the controller or
motor could burn out.
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Setting Up Your Baby Lock (Cont.)
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5. Position the telescopic thread guide.
Raise the telescopic thread guide to its high
est position. Rotate the shaft to the left and
right until each section "clicks" into a locked
position (fig. B).
6. Opening Front table
To open the front table, place your thumb
against the tab, and slide the cover to the
right. A slight pull toward you will allow the
cover to swing down, providing access to
the chain looper.
(fig. C).
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Side Cover
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Open side door on the left for easy access to
the chain looper thread tray.
Close door before sewing.
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Thread Cutter
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There is a thread cutter located on the left side of your machine. At the
end of a seam, sew off the fabric edge and continue sewing to create a
5 6 inch(12 15cm) thread chain.
Bring the chain of thread up and back and pull forward into the thread
cutter.
Presser Foot Pressure Adjustment
The presser foot pressure has been preset at the factory and rarely
needs adjustment. You may find it necessary, however, to decrease
the pressure for thick fabrics or increase pressure for thin fabrics to
feed more smoothly under the foot. Use a coin to turn the screw on top
of the machine.
To increase pressure, turn the pressure adjusting screw clockwise.
To decrease pressure, turn the screw counter clockwise.
SnapOn Presser Foot
The Baby Lock has the convenience of a snapon presser foot.
To Release:
1. Raise the presser foot lever. This will also lower the feed dogs out of
the way.
2. Raise the needles to the highest position.
3. Push the presser foot release lever located at the back of the presser
foot holder.
4. Slide the presser foot to the left of the needles.
Presser Foot
Release Lever
To Replace:
1. Raise the presser foot lever.This will also lower the feed dogs out of
the way.
2. Raise the needles to the highest position.
3. Slide the foot from the left to right.
4. Align the bar to the foot with the groove in the holder.
5. Lower the presser foot lever to snap into place.
6. Turn the hand wheel counter clockwise to engage the feed dogs in
the up position.
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The raised markings on the toe of the foot are seam line guides. They indicate the needle positions to
help guide your fabric for accurate seaming.
Stitch Length
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The stitch length adjusting dial is conve
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machine. A stitch length of 3mm, or about 10 stitches per inch is ideal for most fabrics. For seaming
very light weight fabrics, you may prefer a shorter stitch length. When sewing heavier fabrics, you may
choose to lengthen the stitch (fig. B).
niently located just to the left of the front
cover, near the base plate (fig. A). The
dial shows the stitchlength ranging from
1, for the shortest stitch, to 4 for the
longest.
Simply turn the dial aligning the desired
setting with the indicator mark on the
Differential Feed
Your Baby Lock Cover Stitch is equipped with differential feed.The
set of feed dogs work independently in order to ensure smooth
sewing on all fabrics (fig. A)
When the differential feed adjusting lever, located at the machine's
right, front edge is set on "N" for normal feeding, the feed dogs move
the same distance. This is the setting to use for most fabrics and
applications (fig. B).
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When the dial is set above "N", the front feed dog will feed more fab
rics than the back. This is because the front feed dog moves at a
greater distance than the back feed dogs. As a result, the fabric
becomes compressed or eased, as the diagram on the front cover
indicates. This can eliminate wavy seams in stretchy fabrics or those
cut on the bias grain.
At the maximum setting of 2.0 (fig. C), the differential feed can gath
er a lightweight fabric to nearly double fullness (fig. D).
The front feed dog is actually feeding in twice as much fabric as the
back feed dog is feeding out. To maximize the gathering effects, use
the longest stitch length setting. Fabric weight will affect the gather
ing. Test stitch for desired results.
When the differential feed lever is set below "N" (fig. F), the front feed
dog moves less distance than the back feed dog. This adjustment
stretches the fabric slightly as it is sewn. The lower settings prevent
puckers on lightweight fabric (fig. E).
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Chain/Cover Stitch Tension Dials
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Needle Tension Dials
From left to right the dials are:
Orange for C1 chain needle, Yellow for C2 chain needle and Green for C3 chain needle.
The tension settings range from 0 to 9. The fabric and thread that you are working with will determine
what the tension setting will be. Be sure to sew test after changing the settings.
Chain Looper Tension Dial
The chain looper dial is color coded blue for easy identification. The tension settings range from 0 to 9.
The fabric, thread and stitch that you are working with will determine what the tension setting will be.
Be sure to sew test after changing the settings.
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