Baby Lock Sofia BL137A2

Questions and Answers

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David CampbellSep 5, 2025
Why does Baby Lock Sewing Machine make a high-pitched noise?
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  Keith OsborneSep 5, 2025
  A high-pitched noise from your Baby Lock sewing machine could indicate dust accumulation in the feed dogs or bobbin case (clean the race), incorrect upper thread threading (correct the upper threading), or a scratched or burred bobbin case (consider replacing the bobbin case by contacting your authorized retailer). Also, ensure you are using a bobbin designed specifically for this machine.
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victoriajonesSep 3, 2025
Why Baby Lock Sewing Machine fabric does not feed?
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  Jacob CamachoSep 3, 2025
  If the fabric isn't feeding through your Baby Lock sewing machine, check if the feed dogs are lowered (slide the drop feed lever to the right), the stitch is too fine (lengthen the stitch), the presser foot isn't appropriate for the stitch (attach the correct foot), or the thread is tangled (remove the tangled thread and clean the race).
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Michele GaySep 1, 2025
Why is my Baby Lock Sofia BL137A2 thread tension incorrect?
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  Joseph RoseSep 1, 2025
  Incorrect thread tension on your Baby Lock sewing machine can stem from a few issues: the upper thread wasn't threaded correctly (correct the upper threading, ensuring it's on the thread guide spring); the bobbin thread is incorrectly installed (correctly install it); the fabric, thread, and needle combination isn't right (select an appropriate combination); the presser foot holder is incorrectly installed (correctly install it); the thread tension itself is incorrect (adjust the upper thread tension); or an incorrect bobbin is being used (use a bobbin designed specifically for this machine).
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Logan GonzalesAug 31, 2025
What to do if lower thread is tangled on Baby Lock Sewing Machine?
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  Melissa KnightAug 31, 2025
  If the lower thread is tangled or breaking in your Baby Lock sewing machine, it could be due to the bobbin thread being incorrectly installed (correctly install the bobbin thread), the bobbin is scratched or doesn't rotate smoothly (replace the bobbin), the thread is tangled (remove the tangled thread and clean the race), or a bobbin not designed specifically for this machine is being used (use the correct bobbin).
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Michaela LopezAug 29, 2025
Why Baby Lock Sewing Machine bobbin thread does not wind neatly?
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  lisa95Aug 29, 2025
  If the bobbin thread isn't winding neatly on the bobbin of your Baby Lock sewing machine, it might be because the thread isn't passed through the bobbin-winding thread guide correctly (correctly pass the thread), the bobbin spins slowly (move the sewing speed controller to the right for faster speed), or the thread wasn't initially wound correctly (wind the thread around the bobbin five or six times clockwise).
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Megan CarlsonAug 27, 2025
Why is my Baby Lock Sewing Machine fabric wrinkled?
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  Suzanne LeeAug 28, 2025
  If the fabric is wrinkling while using your Baby Lock sewing machine, it could be due to a few reasons: the upper thread wasn't threaded correctly, or the bobbin is incorrectly installed (correctly thread the upper thread and install the bobbin thread correctly); the spool is incorrectly installed (correctly install the spool); the combination of fabric, thread, and needle isn't correct (select the correct combination); the needle is bent or blunt (replace the needle); the stitch is too coarse for thin fabrics (shorten the stitch length or use stabilizer material); or the thread tension is incorrect (adjust the upper thread tension).
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James YoungAug 26, 2025
What to do if upper thread breaks on Baby Lock Sofia BL137A2?
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  Ricky BrowningAug 27, 2025
  If the upper thread is breaking on your Baby Lock sewing machine, consider these potential causes: the upper thread wasn't threaded correctly (correct the upper threading, and use the correct spool cap), there are knots or tangles in the thread (remove them), the selected needle isn't appropriate for the thread (select an appropriate needle), the upper thread tension is too tight (loosen it), the thread is tangled (remove the tangled thread and clean the race), the needle is bent or blunt (replace it), the needle is incorrectly installed (correctly install it), or a bobbin designed specifically for this machine is not used (use the correct bobbin). For scratched presser feet or bobbin cases, consider replacing them by contacting your authorized retailer.
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Daniel SandersAug 23, 2025
Why Baby Lock Sewing Machine does not operate?
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  Mark MurilloAug 23, 2025
  Your Baby Lock sewing machine might not be operating due to several reasons: the machine isn't turned on (turn it on); the start/stop button wasn't pressed (press it); the presser foot lever is raised (lower it); the start/stop button was pressed while the foot controller is connected (disconnect the foot controller to use the start/stop button); or the bobbin winder shaft is on the right side (slide it to the left).

Summary

Introduction and Safety

Important Safety Instructions

Critical safety warnings and precautions for operating the sewing machine.

For Safe Operation

Guidelines to ensure safe use of the sewing machine during operation.

For Repair or Adjustment

Machine Parts and Operation Controls

Operation Buttons

Operation Panel and LCD

Guide to using the LCD screen and control panel for machine operations.

GETTING READY

Turning the Machine On;Off

Procedures for powering the sewing machine on and off safely.

LCD (Liquid Crystal Display) Operation

Winding;Installing the Bobbin

Step-by-step guide for winding and correctly installing the bobbin.

Upper Threading

Detailed instructions for threading the upper thread correctly.

Replacing the Needle

Replacing the Presser Foot

SEWING BASICS

Sewing

Fundamental sewing operations and general procedures.

General Sewing Procedure

A step-by-step guide to performing basic sewing tasks.

Selecting Stitching

How to choose, set up, and apply different stitches.

Starting to Sew

Instructions on how to begin and control the sewing process.

Using the Foot Controller

How to operate the sewing machine using the foot pedal.

Setting the Stitch and Useful Functions

Setting the Stitch

Adjusting Stitch Width

Modifying the width of zigzag and other stitches.

Adjusting Stitch Length

Modifying the length of stitches for finer or coarser results.

Adjusting Thread Tension

Regulating thread tension for optimal stitch appearance.

UTILITY STITCHES

Stitch Setting Chart

Buttonhole Stitching;Button Sewing

EMBROIDERY

Embroidering Neatly

Preparations and basic procedures for achieving neat embroidery.

Attaching the Embroidery Foot

Attaching the Embroidery Unit

How to connect and attach the embroidery unit to the sewing machine.

Preparing the Fabric

Attaching the Embroidery Frame

Selecting Embroidery Patterns

Guide to choosing and selecting embroidery designs from various sources.

Embroidering a Pattern

Step-by-step process for embroidering a selected pattern.

Editing and Saving Patterns

APPENDIX

Care and Maintenance

Troubleshooting

Solutions for common problems and symptoms encountered during operation.

Error Messages

Explanations of on-screen error messages and their probable causes.

Upgrading Your Machine’s Software Using USB Media

Baby Lock Sofia BL137A2 Specifications

General

Number of Stitches	137
Bobbin Type	Drop-In Bobbin
Needle Threader	Automatic
Stitch Select Display	LCD Screen
Maximum Stitch Width	7mm
Maximum Stitch Length	5mm
Speed Control	Yes
Start/Stop Button	Yes
Needle Up/Down	Yes
Work Light	LED
Built-in Stitches	137
Buttonhole Styles	7
Sewing Speed	850 stitches per minute
Presser Feet	7
Feed System	7-point Feed Dogs