Brother LS2125i Sewing Machine Manual

The Brother LS2125i is a lightweight, easy-to-use electronic sewing machine perfect for beginners and everyday sewing projects. It features 10 built-in stitches, a 4-step buttonhole, automatic needle threading, drop-in bobbin system, free arm capability, and adjustable stitch length and width. Powered by standard household outlet. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Unpacking and Setup 3. First-Time Operation 4. Specifications 5. Controls and Functions 6. Basic Stitching Guide 7. Buttonhole Function 8. Maintenance & Cleaning 9. Accessories 10. Safety Information 11. Troubleshooting

Features at a Glance

Key components: Main body with stitch selection dial, Bobbin case and shuttle, Presser foot, Needle clamp, Spool pins, Handwheel, Foot controller, Power cord.

Feature	Description
Built-in stitches	10 stitches including straight, zigzag, blind hem, and stretch stitches
4-step buttonhole	Easy-to-create buttonholes of consistent size
Automatic needle threader	Simplifies threading the needle
Drop-in bobbin system	Top-loading, easy to insert and see thread supply
Free arm	Removable flat bed accessory for sewing cuffs and sleeves
Stitch length adjustment	Dial to control stitch length (0-4 mm)
Stitch width adjustment	Dial to control zigzag width (0-5 mm)
Reverse sewing lever	For reinforcing stitches at beginning and end of seams
Presser foot pressure dial	Adjustable for different fabric thicknesses
Built-in light	Illuminates sewing area

Unpacking and Setup

Remove all packaging materials. Place on stable, flat surface.

Attach power cord: Plug into machine and wall outlet.
Install foot controller: Plug into machine port.
Wind bobbin: Place thread on spool pin, follow threading guide, wind bobbin using bobbin winder.
Insert bobbin: Open bobbin cover, drop bobbin in with thread clockwise, pull thread through slot.
Thread upper thread: Use automatic needle threader or follow numbered path on machine.
Attach presser foot: Lift lever, snap foot into place.

WARNING! Keep fingers away from needle area during operation. Unplug when not in use or during maintenance.

First-Time Operation

Plug in power cord and foot controller. Turn handwheel toward you to raise needle to highest position.

Select stitch: Turn stitch selection dial to desired pattern.
Adjust settings: Set stitch length and width as needed.
Place fabric: Lower presser foot lever.
Start sewing: Gently press foot controller.
Guide fabric: Let machine feed fabric; do not pull.
Reverse: Hold reverse lever to sew few stitches backward at start and end.
Finish: Raise needle, lift presser foot, remove fabric, cut threads.

CAUTION! Always start with needle in highest position. Use correct needle and thread for fabric type.

Specifications

Type: Electronic sewing machine.
Stitches: 10 built-in stitches.
Buttonhole: 4-step manual buttonhole.
Max sewing speed: 750 stitches per minute.
Stitch length: Adjustable 0-4 mm.
Stitch width: Adjustable 0-5 mm.
Needle: Household sewing machine needle (size 11/75 or 14/90 recommended).
Bobbin: Class 15 transparent bobbin.
Power supply: 120V AC, 60Hz.
Dimensions: Compact and lightweight design.

Controls and Functions

Main Controls: Stitch selection dial, Stitch length dial, Stitch width dial, Reverse sewing lever, Handwheel, Power/light switch, Presser foot lever, Bobbin winder.

Stitch Guide: Symbols on machine indicate stitch patterns: straight, zigzag, blind hem, stretch stitches, etc.

Settings: Stitch length (0-4) for shorter/longer stitches; stitch width (0-5) for narrow/wide zigzag; presser foot pressure for light/heavy fabrics. Needle positions: Left, center, right (adjust with stitch width dial).

Basic Stitching Guide

For straight stitch: Select straight stitch symbol. For zigzag: Select zigzag symbol, adjust width. For blind hem: Use blind hem foot. For stretch stitches: Use for knit fabrics.

Test on scrap fabric first.
Match needle/thread to fabric weight.
Use appropriate presser foot.
Adjust tension if needed (upper tension dial).

Tip: Keep fabric edges aligned with seam guide for straight seams.

Buttonhole Function

4-step buttonhole process:

Mark buttonhole position on fabric.
Attach buttonhole foot.
Select buttonhole stitch (step 1).
Sew left side: Step 1.
Sew bottom bar: Step 2.
Sew right side: Step 3.
Sew top bar: Step 4.
Reinforce by sewing over first few stitches.
Cut open buttonhole carefully with seam ripper.

WARNING! Practice on scrap fabric first. Ensure buttonhole size matches button.

Maintenance & Cleaning

Unplug before cleaning. Remove lint from bobbin area and feed dogs regularly. Oil as instructed in manual (specific points only).

CAUTION! Do not use compressed air; it can force lint deeper. Use only recommended sewing machine oil.

Accessories

Included: Buttonhole foot, Zipper foot, Button sewing foot, Darning plate, Seam ripper/brush, Screwdriver, Spool caps, Bobbins (class 15), Needles, Power cord, Foot controller, Instruction manual.

Safety Information

Keep hands away from moving parts. Unplug when changing needle, cleaning, or not in use. Use proper ventilation. Do not operate if cord or foot controller is damaged. For support, visit www.brother-usa.com or contact 1-800-284-4357.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Machine not running	Power connection	Check power cord and outlet; ensure foot controller is plugged in.
Thread bunching underneath	Incorrect bobbin threading	Re-thread bobbin ensuring correct direction; check upper threading.
Needle breaks	Wrong needle/bent needle	Replace with new needle; ensure it is inserted fully and tightened.
Uneven stitches	Tension issues	Adjust upper tension; re-thread top and bobbin.
Fabric not feeding	Feed dogs lowered	Check feed dog position; clean feed dogs.
Thread breaking	Old thread/tension	Use fresh thread; reduce tension; check for burrs on needle plate.

Reset: Unplug for 60 seconds if electronic functions behave unexpectedly.

Service: 1-800-284-4357; www.brother-usa.com