Janome 8100 QDC Manual

The Janome 8100 QDC is a high-performance computerized sewing machine with advanced features including 100 built-in stitches, automatic needle threader, one-step buttonhole, drop feed for free-motion sewing, speed control slider, built-in needle plate thread cutter, and memory function for stitch patterns. Powered by standard household electrical outlet. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Computerized control panel, Automatic needle threader, Drop feed mechanism, Speed control slider, Built-in thread cutter, LCD display, Foot pressure adjustment, Bobbin winding system.

Feature	Description
Automatic needle threader	Easy threading with lever activation
One-step buttonhole	Automatic buttonhole creation
Drop feed	For free-motion quilting and darning
Speed control slider	Adjustable sewing speed
Built-in thread cutter	Convenient thread cutting at needle plate
LCD display	Shows stitch selection and settings
Memory function	Stores favorite stitch combinations
Foot pressure adjustment	Adjustable for different fabric types
Bobbin winding system	Automatic bobbin winding with thread cutter
100 built-in stitches	Includes utility, decorative, and stretch stitches

Installation & Setup

Unpack and inspect contents. Place on stable sewing table.

1. Remove protective packaging and foam inserts.
2. Install foot controller: Plug into machine port.
3. Connect power: Plug power cord into machine and electrical outlet.
4. Install needle: Loosen needle clamp screw, insert needle with flat side to back.
5. Wind bobbin: Follow bobbin winding instructions in manual.

WARNING! Keep fingers away from needle area during operation. Always turn off power when threading or changing accessories.

First-Time Operation

Power on machine; follow setup procedure.

1. Thread machine: Follow threading path indicated on machine.
2. Insert bobbin: Place bobbin in case with thread pulling counterclockwise.
3. Select stitch: Use stitch selection dial or buttons.
4. Adjust stitch length/width: Use control dials as needed.
5. Test sew: Use scrap fabric to test settings.

CAUTION! Always use proper needle for fabric type. Replace bent or damaged needles immediately.

Specifications

• Stitches: 100 built-in stitches including utility, decorative, quilting
• Buttonholes: 7 one-step automatic buttonholes
• Stitch Width: Up to 7mm
• Stitch Length: Up to 5mm
• Needle Positions: Multiple needle positions available
• Speed: Up to 820 stitches per minute
• Display: LCD with stitch information
• Memory: Stores stitch combinations
• Power Source: Standard household electrical outlet
• Weight: Approximately 22 lbs (10 kg)

Controls and Settings

Access functions via control panel and dials. Front Panel: Power switch, Stitch selection, Reverse stitch, Needle up/down, Start/stop button.

Control Panel: Stitch selection buttons, LCD display, Memory buttons, Stitch length/width controls, Mirror image, Lock stitch.

Basic Settings: Stitch selection, Length adjustment (0-5mm), Width adjustment (0-7mm), Needle position, Thread tension (automatic), Foot pressure adjustment. Advanced: Memory storage, Stitch combination programming, Speed control slider.

Stitch Selection & Memory

100 built-in stitches organized by category.

1. Select stitch category: Use category buttons or dial.
2. Choose specific stitch: Use number pad or scroll dial.
3. Adjust settings: Modify length, width as needed.
4. Save to memory: Press MEMORY button to store combinations.
5. Recall memory: Access saved stitch combinations quickly.

Tip: Test new stitches on scrap fabric before using on project.

Advanced Functions

One-step buttonhole: Automatic measurement and sewing.

1. Attach buttonhole foot.
2. Select buttonhole stitch.
3. Place button in foot holder.
4. Machine automatically sews perfect buttonhole.

Drop Feed: For free-motion work.

1. Lower feed dogs using lever.
2. Attach darning or quilting foot.
3. Control fabric movement manually.

Automatic Needle Threader: Easy threading system.

Maintenance & Care

Regular cleaning and oiling essential for optimal performance.

1. Clean lint from bobbin area after each project.
2. Oil moving parts as specified in manual.
3. Check needle regularly for damage.
4. Clean exterior with soft, dry cloth.

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

Accessories

Standard accessories included: Various presser feet, Bobbins, Needles, Seam ripper, Brush, Screwdriver, Spool holders, Instruction manual.

Accessory	Use
All-purpose foot	General sewing
Zipper foot	Zipper installation
Buttonhole foot	Automatic buttonholes
Overedge foot	Overcasting and finishing
Quilting foot	Quilting projects

Regulatory Information

UL Listed: Complies with safety standards for household sewing machines. FCC Part 15: Class B digital device; complies with interference limits. Copyright © Janome America, Inc. For support, visit www.janome.com or contact customer service at 1-800-631-0183.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Machine not running	Power connection	Check power cord connection; ensure foot controller plugged in.
Thread breaking	Tension/needle issues	Check thread tension; replace needle; ensure proper threading.
Uneven stitches	Threading/tension	Re-thread machine; adjust tension; check bobbin insertion.
Fabric not feeding	Feed dogs	Ensure feed dogs raised; clean feed dog area.
Needle breaks	Wrong needle/bent needle	Use correct needle type; replace bent needle; check needle installation.

Reset: Turn machine off and on to reset computer functions.

Service: 1-800-631-0183; www.janome.com