instruction manual for brother ls2125i sewing machine

The Brother LS2125i is a lightweight, easy-to-use mechanical sewing machine with 10 built-in stitches, 4-step buttonhole, free arm capability, built-in thread cutter, drop feed for free-motion sewing, adjustable stitch length and width, built-in LED light, and top drop-in bobbin system. Powered by 120V AC, 60Hz. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation & Setup 3. First-Time Operation 4. Specifications 5. Controls and Settings 6. Stitch Selection 7. Threading & Bobbin 8. Maintenance & Cleaning 9. Regulatory Information 10. Troubleshooting

Features at a Glance

Key components: Mechanical sewing machine with free arm, stitch selection dial, built-in LED light, top drop-in bobbin system, foot pedal control.

FeatureDescription
Built-in stitches10 utility and decorative stitches
4-step buttonholeEasy buttonhole creation
Free arm capabilityFor sewing cuffs and sleeves
Built-in thread cutterConvenient thread cutting
Drop feedFor free-motion sewing and darning
Adjustable stitch length0-4mm stitch length control
Adjustable stitch width0-5mm stitch width control
Built-in LED lightIlluminates work area
Top drop-in bobbinEasy bobbin loading and monitoring
Foot pedal controlVariable speed control

Installation & Setup

Unpack and inspect contents. Place on stable surface.

  1. Remove machine from packaging and place on flat, stable surface.
  2. Install foot pedal: Connect to machine port at right front.
  3. Connect power: Plug power cord into machine and wall outlet.
  4. Install needle: Loosen needle clamp screw, insert needle with flat side to back, tighten screw.
  5. Attach presser foot: Lower presser foot lever, snap foot into place.

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

First-Time Operation

Power on machine; follow setup steps.

  1. Wind bobbin: Place thread spool on pin, guide thread through bobbin winding tension disk.
  2. Insert bobbin: Drop bobbin into case with thread unwinding counterclockwise.
  3. Thread upper thread: Follow numbered threading guide on machine.
  4. Select stitch: Turn stitch selection dial to desired pattern.
  5. Test sew: Place fabric under presser foot and begin sewing.

CAUTION! Always raise needle to highest position before removing fabric.

Specifications

Controls and Settings

Main controls: Stitch selection dial, stitch length dial, stitch width dial, reverse stitch button.

Stitch Selection: Turn dial to select from 10 built-in stitches including straight, zigzag, blind hem, and stretch stitches.

Stitch Length: Adjust from 0 (for buttonholes) to 4mm for longer stitches.

Stitch Width: Adjust from 0mm (straight stitch) to 5mm for zigzag and decorative stitches.

Reverse Stitch: Press and hold button for reinforcement stitching.

Stitch Selection

Available stitches: Straight stitch, zigzag stitch, blind hem stitch, stretch stitches, decorative stitches.

  1. Straight stitch: For basic sewing and seams (position 1)
  2. Zigzag stitch: For finishing edges and decorative work (position 2)
  3. Blind hem stitch: For nearly invisible hems (position 3)
  4. Stretch stitches: For knit fabrics (positions 4-6)
  5. Decorative stitches: For embellishment (positions 7-10)
  6. Buttonhole: 4-step process using positions A-D

Tip: Always test stitch on scrap fabric before sewing project.

Threading & Bobbin

Upper threading and bobbin winding procedures.

  1. Bobbin winding: Place spool on pin, thread through guide, wind bobbin evenly.
  2. Bobbin insertion: Drop bobbin into case with thread pulling counterclockwise.
  3. Upper threading: Follow numbered path from spool pin to needle.
  4. Needle threading: Use built-in needle threader or thread manually.
  5. Thread tension: Adjust dial for balanced stitches (usually 4 for normal fabrics).

WARNING! Ensure machine is unplugged during threading and maintenance.

Maintenance & Cleaning

Regular maintenance ensures optimal performance.

  1. Clean lint: Remove needle plate and clean bobbin area regularly.
  2. Oil machine: Apply sewing machine oil to moving parts as needed.
  3. Needle replacement: Change needle regularly or when damaged.
  4. Storage: Cover machine when not in use to prevent dust accumulation.

CAUTION! Use only sewing machine oil. Unplug before maintenance.

Regulatory Information

UL listed for safety compliance. Copyright © Brother Industries, Ltd. For support, visit www.brother-usa.com or contact 1-877-467-4289. This product complies with FCC Part 15 regulations for home use.

Troubleshooting

SymptomPossible CauseCorrective Action
Thread breakingIncorrect threading/tensionRe-thread machine; adjust tension; check for burrs on needle.
Skipped stitchesWrong needle/damaged needleReplace needle; ensure correct needle type for fabric.
Uneven stitchesIncorrect tensionAdjust upper and bobbin tension; re-thread.
Machine not runningPower/pedal issuesCheck power connection; ensure pedal is plugged in properly.
Fabric not feedingFeed dogs loweredRaise feed dogs; check presser foot pressure.

Reset: Unplug machine for 30 seconds to reset electronics.

Service: 1-877-467-4289; www.brother-usa.com

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