JL 125 Sewing Machine Instruction Manual

The JL 125 is a versatile household sewing machine featuring 12 built-in stitches, adjustable stitch length and width, 4-step buttonhole function, free arm capability, built-in LED light, top drop-in bobbin system, automatic needle threader, and reverse sewing function. Powered by 110-120V AC, this mechanical sewing machine is ideal for basic sewing, garment construction, and home decor projects. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Mechanical sewing head, built-in stitch patterns, free arm, accessory compartment, foot pedal, power cord, and accessory kit.

Installation & Setup

Unpack and inspect all contents. Place on stable, level surface.

1. Remove machine from packaging: Lift machine by base, not by handwheel.
2. Attach extension table: Slide into position until it clicks.
3. Connect foot pedal: Plug into machine's pedal port.
4. Connect power: Plug power cord into machine and wall outlet.
5. Install needle: Loosen needle clamp screw, insert needle with flat side to back.
6. Wind bobbin: Follow bobbin winding instructions in threading section.

WARNING! Machine is heavy; lift with care using both hands. Ensure stable surface to prevent tipping.

First-Time Operation

Before sewing your first project, complete these setup steps.

1. Thread the machine: Follow upper threading diagram carefully.
2. Insert bobbin: Place bobbin in bobbin case with thread unwinding counterclockwise.
3. Select stitch: Turn stitch selector dial to desired pattern.
4. Adjust settings: Set stitch length and width according to fabric type.
5. Test sew: Use scrap fabric to test stitch quality and tension.
6. Adjust tension: If stitches are loose or tight, adjust tension dial gradually.

CAUTION! Always turn handwheel toward you. Never force the machine.

Specifications

• Machine Type: Mechanical sewing machine
• Stitch Patterns: 12 built-in stitches
• Stitch Length: 0-4mm adjustable
• Stitch Width: 0-5mm adjustable (zigzag)
• Buttonhole: 4-step manual
• Needle System: HA-1, 15x1
• Bobbin Type: Class 15 transparent
• Max Sewing Speed: 800 stitches per minute
• Lighting: Built-in LED
• Power Supply: 110-120V AC, 60Hz
• Dimensions: 15.4" x 7.1" x 11.8"
• Weight: 13.2 lbs

Controls and Settings

Main controls located on front and side of machine.

Front Panel: Stitch selector dial, stitch length dial, stitch width dial, reverse lever, bobbin winder, handwheel.

Stitch Selection: Turn dial to select from 12 patterns (straight, zigzag, stretch, decorative). Stitch Length: Controls distance between stitches (0-4mm). Stitch Width: Adjusts zigzag width (0-5mm). Reverse Lever: Hold down to sew backwards. Bobbin Winder: Winds bobbin without threading needle. Handwheel: Manual control of needle position.

Stitch Selection Guide

Choose appropriate stitch for your fabric and project type.

1. Straight Stitch (Position 1): Basic sewing, topstitching, basting
2. Zigzag Stitch (Position 2): Seam finishing, appliqué, stretch fabrics
3. 3-Step Zigzag (Position 3): Elastic application, mending
4. Blind Hem (Position 4): Nearly invisible hemming
5. Stretch Stitch (Position 5): Knits and stretch fabrics
6. Decorative Stitches (Positions 6-12): Embellishment and decorative work

Tip: Always test stitch on scrap fabric before starting your project.

Threading the Machine

Proper threading is essential for good stitch quality.

1. Raise presser foot and needle to highest position.
2. Place spool on spool pin, secure with cap if needed.
3. Follow threading path: Through guides, tension discs, take-up lever.
4. Use automatic needle threader: Push lever down, hook thread through eye.
5. Wind bobbin: Place empty bobbin on winder, wrap thread around, push to engage.
6. Insert bobbin: Drop into case with thread unwinding counterclockwise.
7. Pull up bobbin thread: Hold upper thread, turn handwheel to bring up bobbin thread.

WARNING! Ensure machine is unplugged during threading to prevent accidental starting.

Basic Sewing Techniques

Master these fundamental sewing skills.

1. Starting to sew: Position fabric under presser foot, lower foot, begin sewing slowly.
2. Seam guiding: Use seam guide lines on needle plate for straight seams.
3. Reverse stitching: Hold reverse lever at beginning and end of seams.
4. Turning corners: Stop with needle down in fabric, lift presser foot, pivot fabric.
5. 4-step buttonhole: Mark position, follow step-by-step buttonhole procedure.
6. Free arm sewing: Remove extension table for circular sewing like sleeves.
7. Changing presser feet: Lift lever to release, align new foot until it clicks.

CAUTION! Keep fingers away from moving needle. Use seam ripper for mistakes.

Maintenance & Cleaning

Regular maintenance ensures optimal performance.

1. Daily: Brush out lint from bobbin area and feed dogs.
2. Weekly: Oil moving parts with sewing machine oil (2-3 drops).
3. Monthly: Clean tension discs with folded fabric or dental floss.
4. As needed: Replace needle after 8-10 hours of sewing.
5. Storage: Cover machine when not in use to prevent dust accumulation.

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

Safety Information

Always follow these safety precautions when operating your sewing machine.

• Disconnect power when changing needles, cleaning, or not in use
• Keep fingers away from moving needle and presser foot
• Do not sew over pins - remove them as you sew
• Use proper lighting to see sewing area clearly
• Keep hair and loose clothing away from moving parts
• Do not operate if cord or foot pedal is damaged
• Supervise children and beginners closely

Troubleshooting

Service: For technical support, contact authorized JL service center. Do not attempt to repair electrical components yourself.