1. Introduction
Thank you for purchasing the SEESII Cordless Electric Belt Sander. This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your new tool. Please read this manual thoroughly before use and keep it for future reference.
2. Safety Instructions
Always follow basic safety precautions to reduce the risk of fire, electric shock, and personal injury.
- Work Area Safety: Keep your work area clean and well-lit. Cluttered or dark areas invite accidents. Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust.
- Electrical Safety: Avoid body contact with earthed or grounded surfaces such as pipes, radiators, ranges, and refrigerators.
- Personal Safety: Always wear eye protection. Use safety equipment such as dust masks, non-skid safety shoes, hard hats, or hearing protection when appropriate. Dress properly; avoid loose clothing or jewelry. Keep hair, clothing, and gloves away from moving parts.
- Tool Use and Care: Do not force the power tool. Use the correct power tool for your application. Disconnect the battery pack from the power tool before making any adjustments, changing accessories, or storing power tools.
- Battery Use and Care: This tool is designed for use with Makita 18V batteries (BL1820b, BL1830b, BL1840b, BL1850b, BL1860b). Ensure the battery is fully charged before use. Do not expose battery packs to fire or excessive temperature.
3. Package Contents
Upon opening the package, please verify that all items listed below are present and undamaged. If any items are missing or damaged, please contact customer support.
- SEESII Electric Belt Sander (Main Unit)
- 8mm Sanding Belts (4 pieces, various grits)
- 13mm Sanding Belts (4 pieces, various grits)
- Additional Sanding Belts (Total 16 pieces: 4x 40-grit, 4x 60-grit, 4x 80-grit, 4x 120-grit)
- Instruction Manual

Image 3.1: Contents of the SEESII Electric Belt Sander package.
4. Product Overview and Components
Familiarize yourself with the parts of your SEESII Electric Belt Sander before operation.

Image 4.1: Labeled components of the belt sander.
- Sanding Belt
- Angle Adjustment Button
- Speed Adjustment Dial
- Cam Lever
- Belt Adjustment Screw
- Trigger
- Trigger Lock Button
- Battery Interface (Makita 18V compatible)
5. Setup
5.1 Attaching the Battery
This belt sander is compatible with Makita 18V batteries (BL1820b, BL1830b, BL1840b, BL1850b, BL1860b). Ensure the battery is fully charged before attaching it to the tool. Slide the battery pack into the base of the tool until it clicks securely into place.

Image 5.1: Attaching a Makita 18V battery to the sander.
5.2 Installing/Replacing Sanding Belts
The sander supports both 8mm and 13mm wide sanding belts. To install or replace a belt:
- Ensure the battery is removed for safety.
- Press the cam lever to release tension on the sanding belt.
- Remove the old belt (if applicable) and slide on the new belt, ensuring the directional arrow on the belt matches the arrow on the tool.
- Release the cam lever to tension the belt.
- Use the belt adjustment screw to fine-tune the belt's position, ensuring it runs centrally on the rollers.

Image 5.2: Easy belt replacement process.

Image 5.3: 13mm and 8mm belt compatibility.
6. Operating Instructions
6.1 Powering On/Off
To start the sander, press the trigger. To stop, release the trigger. For continuous operation, press the trigger and then engage the trigger lock button. To disengage the lock, press the trigger again.

Image 6.1: Safety lock button for continuous operation.
6.2 Adjusting Speed
The sander features a 6-stage speed adjustment dial. Rotate the dial to select the desired speed for your application. Lower speeds are suitable for delicate work, while higher speeds are for aggressive material removal.

Image 6.2: Speed adjustment dial.
6.3 Adjusting the Head Angle
The head of the belt sander can be adjusted to various angles, providing flexibility for different workpieces and hard-to-reach areas. Press the angle adjustment button and pivot the head to the desired position, then release the button to lock it.

Image 6.3: Adjustable head angle for versatile use.
6.4 Applications
The SEESII Electric Belt Sander is suitable for various tasks, including:
- Wood sanding and shaping
- Metal deburring and rust removal
- Paint stripping
- Polishing in narrow or intricate spaces

Image 6.4: Versatile applications of the belt sander.

Image 6.5: Efficient sanding in narrow and deep areas.
7. Maintenance
Regular maintenance ensures the longevity and optimal performance of your tool.
- Cleaning: After each use, clean the tool with a soft, dry cloth. Remove any dust or debris from the ventilation openings. Do not use water or chemical cleaners.
- Belt Inspection: Regularly inspect sanding belts for wear and tear. Replace worn belts promptly to maintain sanding efficiency and prevent damage to the workpiece.
- Storage: Store the tool in a dry, secure place out of reach of children. Remove the battery pack before storage.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Tool does not start | Battery not inserted correctly; Battery discharged; Faulty battery or tool. | Ensure battery is fully inserted; Charge battery; Test with another battery; Contact support if problem persists. |
| Sanding belt slips or comes off | Belt not tensioned correctly; Belt adjustment screw loose; Worn belt. | Ensure cam lever is engaged; Adjust belt tension with screw; Replace worn belt. |
| Poor sanding performance | Worn sanding belt; Incorrect grit for material; Low speed setting. | Replace sanding belt; Use appropriate grit; Increase speed setting. |
9. Specifications
| Feature | Detail |
|---|---|
| Brand | Seesii |
| Model | B0FPLY7YDT |
| Power Source | Battery-powered (Lithium-ion 18V) |
| Belt Width Compatibility | 8mm, 13mm |
| Speed Adjustment | 6-stage variable speed |
| Motor Type | Brushless Motor |
| Included Sanding Belts | 16 pieces (40, 60, 80, 120 grit) |
| Battery Compatibility | Makita 18V series (BL1820b, BL1830b, BL1840b, BL1850b, BL1860b) |
| Weight (Tool only) | Under 1kg |
10. Warranty and Support
SEESII offers a 1-year manufacturer's warranty for this product. For any issues, questions, or technical support, please contact us. We aim to respond to customer inquiries within 24 hours.
- Warranty Period: 1 Year
- Contact Method: Go to your "Order History" on Amazon and select "Contact Seller".
- Email Support: cs@seesii.top

Image 10.1: Warranty and support information.