Jack Sewing Machine 9100B Manual

The Jack Sewing Machine 9100B is an industrial-grade sewing machine designed for heavy-duty applications, featuring high-speed operation up to 5000 SPM, automatic thread trimming, programmable needle positioning, built-in needle threader, reverse stitching, adjustable presser foot pressure, and multiple stitch patterns. Powered by 220V AC, 50/60Hz. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Accessories 7. Basic Sewing Operations 8. Maintenance Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Heavy-duty sewing head, Digital control panel, Foot pedal, Thread stand, Bobbin winder, Automatic lubrication system.

Feature	Description
Speed control	Adjustable sewing speed up to 5000 SPM
Automatic thread trimmer	Cuts both needle and bobbin threads automatically
Programmable needle position	Sets needle stop position (up or down)
Built-in needle threader	Automatic needle threading system
Reverse stitching	Reinforces seam beginnings and ends
Stitch patterns	Multiple built-in stitch patterns
Presser foot pressure	Adjustable for different fabric types
Bobbin winder	Automatic bobbin winding system
Digital display	Shows stitch count and settings
Knee lift	Hands-free presser foot lifting

Installation

Unpack and inspect contents. Place on stable work surface.

Position machine: Ensure stable, level surface with adequate workspace.
Connect power: Plug into 220V AC outlet with proper grounding.
Install thread stand: Attach to machine or table as per instructions.
Connect foot pedal: Plug into designated connector.
Oil system: Check automatic lubrication reservoir.

WARNING! Machine is heavy; use proper lifting techniques. Ensure all connections are secure before powering on.

First-Time Setup

Power on machine; follow initial setup procedure.

Thread machine: Follow threading diagram for needle and bobbin.
Set needle position: Program needle stop position as preferred.
Adjust tension: Set thread tension for test fabric.
Test stitches: Run test stitches on scrap fabric.
Calibrate foot pedal: Ensure smooth speed control response.

CAUTION! Keep fingers away from needle area during operation. Always turn off power when threading.

Specifications

Model: Jack 9100B Industrial Sewing Machine
Maximum Speed: 5000 stitches per minute
Stitch Length: 0-5mm adjustable
Needle System: DBx1
Presser Foot Lift: 10mm (manual), 16mm (knee lift)
Motor: 550W servo motor
Power Source: 220V AC, 50/60Hz
Machine Weight: 45kg
Lubrication: Automatic oiling system
Stitch Patterns: Straight stitch, zigzag, multiple decorative stitches

Controls and Settings

Access settings via digital control panel. Front Panel: POWER, SPEED ADJUST, STITCH SELECT, NEEDLE POSITION, THREAD TRIMMER, REVERSE.

Digital Display: Shows stitch count, speed, selected pattern, error codes.

Stitch Settings: Length (0-5mm), Width (0-7mm), Pattern selection. Speed Control: Foot pedal controlled with maximum speed limit. Needle Position: Programmable stop position (up/down). Thread Control: Tension adjustment for upper and lower threads.

Connecting Accessories

Thread stand: Mount behind machine. Foot pedal: Connect to control port. Additional feet: Snap-on system for different applications.

Turn off machine before connecting accessories.
Match accessories to proper mounting points.
Test functionality before regular use.

Tip: Ensure machine is powered off when changing presser feet or accessories.

Basic Sewing Operations

Supports various fabrics from light to heavy materials.

Power on: Press POWER button, machine initializes.
Select stitch: Choose pattern via control panel.
Set parameters: Adjust stitch length and width as needed.
Begin sewing: Press foot pedal to start, control speed with pedal pressure.
Reverse stitch: Press reverse button to reinforce seams.
Auto trim: Press trim button or use automatic function.
Needle position: Use programmed stop position for pivoting.
Thread change: Use built-in needle threader for easy rethreading.

WARNING! Never place hands under needle while machine is running. Always use proper safety procedures.

Maintenance Features

Automatic Lubrication: Monitors oil levels and distribution. Self-diagnostics: Error code display for maintenance alerts. Bobbin Monitoring: Alerts when bobbin thread is low.

Care & Cleaning

Unplug before cleaning. Remove lint and dust regularly. Check oil levels weekly.

CAUTION! Use only recommended sewing machine oil. Keep work area clean and free of obstructions.

Regulatory Information

CE Certified: Complies with European safety standards. ISO 9001: Quality management system certified. Copyright © 2025 Jack Sewing Machine Co., Ltd. For technical support, visit www.jacksew.com or contact +86-574-8686-9100.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Machine won't start	Power connection/safety switch	Check power cord; ensure foot pedal is connected properly.
Thread breaking	Tension/needle issues	Adjust thread tension; replace damaged needle; check threading.
Uneven stitches	Timing/tension problems	Check hook timing; adjust upper and lower thread tension.
Noise during operation	Lubrication/foreign objects	Check oil levels; clean lint buildup; remove any obstructions.
Auto trimmer not working	Settings/mechanical issue	Check trimmer settings; ensure trimmer mechanism is clean.

Reset: Power off and restart machine to clear error codes.

Service: +86-574-8686-9100; www.jacksew.com