1. Introduction
This instruction manual provides essential information for the safe and effective use of your Geko G81220 Rotary Tool with Flexible Shaft. This tool is designed for various precision tasks, including sharpening and cutting, offering durability and solid performance. Please read this manual thoroughly before operating the tool and retain it for future reference.
2. Important Safety Instructions
Always follow basic safety precautions to reduce the risk of fire, electric shock, and personal injury when using any power tool.
- Wear Eye Protection: Always wear safety goggles or safety glasses with side shields when operating the tool.
- Keep Work Area Clean: Cluttered areas invite accidents. Ensure your workspace is well-lit.
- Avoid Dangerous Environments: Do not use power tools in damp or wet locations, or expose them to rain.
- Keep Children Away: All visitors should be kept at a safe distance from the work area.
- Secure Workpiece: Always clamp or secure the workpiece to a stable surface.
- Disconnect Power: Always disconnect the tool from the power source before changing accessories, making adjustments, or performing maintenance.
- Use Correct Accessories: Only use accessories specifically designed for this rotary tool.
- Inspect Tool: Before each use, inspect the tool for damaged parts. Do not use if any part is damaged.
3. Package Contents
Verify that all items listed below are present in your package:
- Geko G81220 Rotary Tool
- Flexible Shaft Attachment
- Assorted Accessories (e.g., grinding stones, cutting discs, sanding bands)
- Instruction Manual

Image 1: Geko G81220 Rotary Tool with Flexible Shaft. This image shows the main rotary tool unit, the flexible shaft attachment, and a selection of included accessories, illustrating the complete product package.
4. Setup
4.1 Unpacking
Carefully remove all components from the packaging. Inspect for any damage that may have occurred during shipping. Keep packaging materials for future storage or transport.
4.2 Attaching the Flexible Shaft
- Ensure the rotary tool is unplugged from the power source.
- Unscrew the collet nut and remove the standard collet from the rotary tool's spindle.
- Thread the flexible shaft's coupling nut onto the rotary tool's spindle housing until secure.
- Insert the flexible shaft's inner drive cable into the rotary tool's collet. Tighten the collet nut to secure the drive cable.
- Ensure the flexible shaft is not kinked or bent sharply during use.
4.3 Installing Accessories
- With the tool unplugged, press the spindle lock button.
- Unscrew the collet nut.
- Insert the accessory shank fully into the collet. If the accessory shank does not fit, you may need to change the collet to match the shank size.
- Tighten the collet nut firmly using the provided wrench. Do not overtighten.
5. Operating the Rotary Tool
5.1 Powering On/Off
Plug the tool into a suitable power outlet. Use the ON/OFF switch located on the tool body to start and stop operation.
5.2 Speed Control
The Geko G81220 features variable speed control. Adjust the speed dial to select the appropriate RPM for your task and accessory. Lower speeds are generally suitable for polishing and delicate work, while higher speeds are for cutting and grinding.
5.3 Recommended Uses
- Sharpening: Use appropriate grinding stones for sharpening blades, tools, and other implements.
- Cutting: Attach cutting discs for precise cuts in various materials.
- Grinding: Utilize grinding accessories for material removal and shaping.
5.4 Working with the Flexible Shaft
The flexible shaft allows for greater precision and access to confined spaces. Hold the handpiece like a pen for detailed work. Ensure the main rotary tool unit is securely placed on a stable surface during flexible shaft operation.
6. Maintenance and Care
Regular maintenance ensures the longevity and optimal performance of your tool.
6.1 Cleaning
- Always unplug the tool before cleaning.
- Use a soft brush or compressed air to clean dust and debris from the ventilation openings.
- Wipe the tool housing with a damp cloth. Do not use harsh chemicals or abrasive cleaners.
6.2 Storage
Store the rotary tool and its accessories in a dry, secure location, out of reach of children. Avoid storing in direct sunlight or extreme temperatures.
6.3 Accessory Replacement
Replace worn or damaged accessories promptly to maintain performance and safety. Refer to section 4.3 for accessory installation.
7. Troubleshooting
If you encounter issues with your Geko G81220, refer to the table below for common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Tool does not start | No power supply; ON/OFF switch is off | Check power connection; Turn ON/OFF switch to ON position |
| Accessory wobbles or vibrates excessively | Accessory not properly installed; Damaged accessory; Incorrect collet size | Reinstall accessory correctly; Replace damaged accessory; Use correct collet for shank size |
| Loss of power during operation | Overload; Ventilation blocked | Reduce pressure on tool; Clean ventilation openings |
| Flexible shaft not rotating | Inner drive cable not inserted correctly; Flexible shaft kinked | Ensure drive cable is fully inserted into collet; Straighten flexible shaft |
8. Technical Specifications
Key technical details for the Geko G81220 Rotary Tool:
| Feature | Detail |
|---|---|
| Model Number | G81220 |
| Brand | Geko |
| Manufacturer | Firma Handlowa GEKO |
| Weight | 2.27 Kilograms |
| Package Dimensions | 35 x 35 x 15 cm |
| Batteries Required | No |
| Recommended Uses | Sharpening, Cutting |
| International Article Code (EAN) | 05901477122897 |
9. Warranty and Support
Information regarding product warranty and availability of spare parts is not provided in this manual. For specific warranty details, technical support, or inquiries about spare parts, please contact the manufacturer, Firma Handlowa GEKO, directly.





