1. Product Overview
The Moonshan Cordless Bag Closer Machine, Model GS7-017D, is an industrial-grade sewing machine designed for efficient and reliable bag closing. It features a cordless, rechargeable design, automatic thread cutting, and a powerful all-copper motor, making it suitable for various packaging applications.

Figure 1: Moonshan Cordless Bag Closer Machine GS7-017D
Key Features:
- Cordless and Rechargeable: Equipped with a 2600 mAh removable lithium battery for portable operation. Features a visual power display.
- Automatic Thread Cutting: Simplifies operation by automatically cutting the sewing thread after sealing.
- All-Copper Core Motor: 90W power with 11000 rpm speed for efficient sewing. Note: Some operational noise is unavoidable due to high motor speed.
- High Efficiency: Capable of stitching over 5,000 bags per day, with a sewing speed of 2600 stitches/min (approximately 2 seconds per bag).
- Versatile Application: Ideal for non-woven fabrics, rice bags, hard blankets, cowhide composite bags, leather, towels, paper bags, and flour bags. Not intended for household sewing.

Figure 2: Light and Industrial Grade Design of the Bag Closer Machine
2. Setup
2.1 Unpacking and Contents
Carefully unpack all components. Verify that all items listed below are present:

Figure 3: Package Contents
- 2600 mAh Lithium Battery
- Wrench for Needle
- Needle Threader
- 10x Needles
- Elastic Rope for Needle Threader
- Hexagon Wrench
- Blades of Thread Cutter
- Oil Pot
- Synchronous Belt
- Charger
- User Manual (this document)
- FAQ Instruction
2.2 Battery Installation
Insert the fully charged 2600 mAh lithium battery into the designated slot on the machine's handle until it clicks securely into place. Ensure the battery is properly seated to prevent power interruptions during operation. The battery features a visual power display to monitor charge level.

Figure 4: Battery Installation and Visual Power Display
2.3 Threading the Machine
Proper threading is crucial for consistent stitching. Follow these steps:
- Place the thread spool onto the spool pin.
- Guide the thread through the tension discs.
- Pass the thread through the thread guides.
- Use the needle threader to guide the thread through the eye of the needle.
Video 1: Thread Guide for Moonshan GS Bag Closer Machine. This video demonstrates the correct procedure for threading the machine, ensuring smooth operation and proper stitch formation.
Video 2: Bag Sewing Machine Wire Routing Tutorial. This tutorial provides detailed instructions on how to route the thread through the machine for optimal performance.
3. Operating Instructions
3.1 General Operation
Hold the machine firmly by the ergonomic handle. Position the bag opening under the presser foot. Press the trigger to start sewing. Guide the bag smoothly through the machine to create a consistent stitch line.
Video 3: Operation of Moonshan Bag Closer Machine. This video demonstrates the general operation of the bag closer machine on various materials.
Video 4: Bag Sewing Machine Demonstration. This video illustrates the process of sewing different types of bags using the machine.
Video 5: Moonshan GS Bag Closer Machine in Action. A comprehensive video showing the machine's capabilities and ease of use.
3.2 Automatic Thread Cutting
After completing a stitch line, simply guide the sewing thread into the cutting slot located on the machine. The machine will automatically cut the thread, eliminating the need for manual cutting and improving workflow efficiency.

Figure 5: Automatic Thread Cutting Mechanism
3.3 Adjustments
The machine offers several adjustable components to optimize sewing for different materials and desired stitch quality:
- Needle Bar Controller: Rotate to adjust the needle bar height to accommodate varying fabric thicknesses.
- Adjustable Thread Tension: Use the thread crimper to fine-tune stitch tightness based on fabric type and desired appearance.
- Presser Foot Switch: Lift or pull down the presser foot as needed for material insertion and removal.
- Adjustable Pressing Force: Rotate the screw clockwise to increase pressing force or counter-clockwise to decrease it.

Figure 6: Adjustable Components for Optimal Sewing
3.4 Material Compatibility
The GS7-017D is designed for a wide range of materials. Recommended sewing material thickness is 0.3-5 mm, depending on the material. It handles both thick and thin materials effectively.
- Sandbags (2-12 layers)
- Non-woven fabrics (2-12 layers)
- Rice bags (2-14 layers)
- Hard carpet (2 layers / 3mm)
- Leather (2 layers / 2-3.5mm)
- Cowhide composite bags (2-10 layers)
- Paper bags (2-10 layers)
- Towels (2 layers / 3.5mm)

Figure 7: Examples of Compatible Materials and Layer Thicknesses
4. Maintenance
Regular maintenance ensures the longevity and optimal performance of your bag closer machine.
4.1 Oiling
The machine body is designed with oiling holes for easy lubrication. Inject sewing machine oil into these holes before and after each use, or as needed, to keep moving parts smooth and prevent wear.

Figure 8: Location of Oiling Holes for Maintenance
Video 6: Sewing Machine Oil Filling Operation Tutorial. This video guides you through the process of properly oiling your bag closer machine.
4.2 Cleaning
Regularly clean dust and lint from the machine, especially around the needle area, presser foot, and thread path. Use a soft brush or compressed air. Ensure the machine is powered off and the battery is removed before cleaning.
4.3 Needle Replacement
If the needle becomes dull, bent, or breaks, replace it with a new one from the provided spare needles. Use the needle wrench to loosen and tighten the needle clamp screw. Ensure the new needle is inserted correctly with the flat side facing the back of the machine.
5. Troubleshooting
This section addresses common issues you might encounter during operation.
| Problem | Possible Cause | Solution |
|---|---|---|
| Skipped Stitches | Incorrect needle installation, dull needle, improper threading, incorrect tension. | Reinstall needle correctly, replace needle, re-thread the machine, adjust thread tension. |
| Thread Breakage | High thread tension, damaged needle, poor quality thread, burrs on thread path. | Reduce tension, replace needle, use quality thread, check thread path for obstructions. |
| Machine Not Starting | Battery not charged, battery not properly installed, power switch off. | Charge battery, ensure battery is securely installed, check power switch. |
| Uneven Stitches | Inconsistent material feeding, incorrect tension, worn presser foot. | Ensure smooth material feeding, adjust thread tension, inspect/replace presser foot if worn. |
6. Specifications
| Feature | Detail |
|---|---|
| Product Dimensions | 30 x 20.98 x 30 inches |
| Item Weight | 6 pounds |
| Model Number | GS7-017D |
| Brand | Moonshan |
| Color | Blue |
| Motor Power | 90 W |
| Motor Speed | 11000 rpm |
| Sewing Speed | 2600 stitches/min |
| Battery Capacity | 2600 mAh Lithium Battery |
| Recommended Material Thickness | 0.3-5 mm (material dependent) |
7. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the contact details provided with your purchase documentation or visit the official Moonshan website. Keep your purchase receipt as proof of purchase for warranty claims.





