Jack 9100B Sewing Machine Manual

The Jack 9100B is a high-performance computerized sewing machine with advanced features including 200 built-in stitches, automatic needle threader, one-step buttonhole, LCD display, speed control, drop feed for free-motion sewing, and built-in needle plate. Suitable for various fabrics from lightweight to heavy materials. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Computerized control panel, LCD display, automatic needle threader, drop-in bobbin system, built-in LED light, free arm capability.

Installation & Setup

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

1. Remove packaging materials and protective covers.
2. Attach foot controller to machine and power cord to outlet.
3. Install needle: Loosen needle clamp screw, insert needle with flat side to back, tighten screw.
4. Wind bobbin: Place thread on spool pin, guide thread through bobbin winding tension disk.
5. Insert bobbin: Open bobbin cover, drop in bobbin with thread counterclockwise.
6. Thread upper thread: Follow threading path indicated on machine.

WARNING! Always unplug machine when not in use or during maintenance. Keep fingers away from moving parts.

First-Time Operation

Plug in machine and turn on power switch.

1. Select straight stitch: Press stitch selection button for basic stitch.
2. Set stitch length: Adjust to medium setting (2.5-3.0).
3. Practice on scrap fabric: Test stitching on similar fabric to your project.
4. Adjust tension: Start with default setting, adjust if needed.
5. Use reverse stitch: Press reverse button to secure stitches at beginning and end.

CAUTION! Always start with needle in highest position. Keep work area well-lit and organized.

Specifications

• Stitches: 200 built-in stitches
• Buttonholes: 10 one-step automatic buttonholes
• Stitch Width: Up to 7mm
• Stitch Length: Up to 5mm
• Speed: Up to 850 stitches per minute
• Needle Positions: Left, center, right
• Bobbin: Top drop-in bobbin system
• Display: LCD with stitch information
• Power Supply: 110V, 60Hz
• Dimensions: Standard sewing machine size with free arm

Controls and Settings

Main control panel: Power switch, LCD display, stitch selection buttons, reverse stitch, needle up/down, thread cutter.

Stitch Adjustment: Length (0-5mm), Width (0-7mm), Tension (0-9). Function Buttons: Auto-lock, Mirror image, Memory, Speed control, Start/stop.

LCD Display: Shows selected stitch, length, width, and other settings. Press function buttons to access advanced features like stitch combination and editing.

Stitch Selection

Access stitches through category buttons or direct selection.

1. Utility Stitches: Straight, zigzag, stretch, overcast (1-50)
2. Decorative Stitches: Scallops, waves, leaves, flowers (51-150)
3. Alphabet Stitches: Upper and lower case letters (151-200)
4. Buttonholes: 10 styles including keyhole, round, stretch
5. Quilting Stitches: Special quilting patterns and stitches

Tip: Use stitch chart in manual for reference. Test new stitches on scrap fabric first.

Advanced Functions

One-step buttonhole: Select buttonhole stitch, place button in foot, machine automatically measures and sews perfect buttonhole.

1. Automatic needle threader: Lower lever, place thread in hook, raise lever to thread needle.
2. Needle up/down: Program preferred needle stop position.
3. Mirror image: Create symmetrical stitch patterns.
4. Memory function: Store favorite stitch combinations.
5. Speed control: Adjust maximum sewing speed.
6. Drop feed: Lower feed dogs for free-motion work.

WARNING! Always use correct presser foot for each function. Never force controls.

Maintenance & Cleaning

Regular maintenance ensures optimal performance and longevity.

1. Daily: Remove lint from bobbin area and feed dogs.
2. Weekly: Oil hook race and moving parts (use sewing machine oil only).
3. Monthly: Clean tension disks and thread path.
4. As needed: Replace needle after 8-10 hours of sewing.

CAUTION! Always unplug machine before cleaning or maintenance. Use only recommended sewing machine oil.

Accessories

Standard accessories included: All-purpose foot, zipper foot, buttonhole foot, blind hem foot, overedge foot, quilting foot, seam ripper, brush, needles, bobbins, spool caps, screwdriver.

Optional Accessories: Walking foot, embroidery foot, free-motion foot, extension table, hard cover, carrying case.

Warranty Information

Jack 9100B comes with 25-year limited warranty on mechanical parts and 2-year warranty on electronic components. Warranty covers manufacturing defects but not damage from misuse, improper maintenance, or unauthorized repairs. Register product online at www.jacksewing.com or contact authorized dealer for warranty service.

Troubleshooting

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

Service: Contact authorized Jack dealer or visit www.jacksewing.com for technical support.