1. Product Overview
The Kärcher 2.641-709.0 High-Pressure Hose Extension is designed to increase the reach of your Kärcher pressure washer. This 6-meter (approximately 19.7 feet) robust DN 8 quality hose provides additional flexibility, allowing you to clean larger areas without frequently repositioning your pressure washer. It is compatible with Kärcher K2 to K7 series pressure washers manufactured from 2008 onwards, featuring a Quick Connect connector system.
2. Safety Information
Important: Read and understand all safety warnings and instructions provided with your pressure washer before using this hose extension. Failure to follow these instructions may result in property damage or personal injury.
- Always ensure the pressure washer is turned off and depressurized before connecting or disconnecting the hose extension.
- Do not use the hose extension if it is damaged, kinked, or shows signs of wear. Inspect the hose before each use.
- Ensure all connections are secure and leak-free before operating the pressure washer.
- This hose extension is designed for high-pressure water applications only. Do not use it for other purposes.
- Keep the hose away from sharp objects, hot surfaces, and moving parts.
- Do not attempt to repair a damaged hose. Replace it with an original Kärcher part.
- Wear appropriate personal protective equipment (PPE), such as safety glasses, when operating a pressure washer.
3. Package Contents
The Kärcher 2.641-709.0 package typically includes:
- One (1) Kärcher 6-meter High-Pressure Hose Extension with Quick Connect fittings.
4. Setup Instructions
Follow these steps to properly connect the high-pressure hose extension:
- Prepare the Pressure Washer: Ensure your pressure washer is turned off and disconnected from the power supply. Release any residual pressure by squeezing the trigger gun.
- Disconnect Existing Hose: If an existing high-pressure hose is connected to your pressure washer or trigger gun, disconnect it by pressing the Quick Connect button (if applicable) and pulling the hose end out.
- Connect Extension to Pressure Washer: Take one end of the 6-meter extension hose. Push the Quick Connect fitting firmly into the high-pressure outlet of your pressure washer until it clicks into place. Gently pull on the hose to ensure it is securely fastened.
- Connect Existing Hose/Trigger Gun to Extension: Take the other end of the 6-meter extension hose. Push the Quick Connect fitting of your existing high-pressure hose or trigger gun firmly into the extension hose's Quick Connect receptacle until it clicks into place. Gently pull to confirm a secure connection.

Image: Detail of the Quick Connect fitting on the Kärcher hose extension. This shows how the hose connects to another component, ensuring a secure, leak-free attachment.
Once all connections are secure, you can proceed to operate your pressure washer with the extended reach.
5. Operating Instructions
Using the Kärcher high-pressure hose extension is straightforward once properly installed.
- Uncoil the Hose: Before starting, fully uncoil the entire length of the hose extension and your main high-pressure hose to prevent kinks and ensure optimal water flow.
- Start Pressure Washer: Follow your pressure washer's manual to turn it on and prime the pump.
- Begin Cleaning: Operate the pressure washer as usual. The extension hose provides increased working radius, reducing the need to move the pressure washer unit.
- Avoid Kinks: During operation, ensure the hose does not become kinked or trapped under objects, as this can restrict water flow and damage the hose.
- After Use: Turn off the pressure washer and release all pressure from the system by squeezing the trigger gun until water stops flowing. Disconnect the hose extension and store it properly.

Image: A person cleaning a patio with a Kärcher pressure washer, demonstrating the extended reach provided by the hose extension. The pressure washer unit remains stationary while the user covers a wider area.
6. Maintenance
Proper maintenance ensures the longevity and safe operation of your Kärcher hose extension.
- Cleaning: After each use, rinse the hose with clean water to remove any dirt or chemical residues.
- Inspection: Regularly inspect the entire length of the hose for cuts, abrasions, bulges, or leaks. Check the Quick Connect fittings for damage or wear.
- Storage: Coil the hose neatly after use. Store it in a cool, dry place, away from direct sunlight, extreme temperatures, and sharp objects. Avoid storing it in a way that creates sharp bends or kinks.
- Winter Storage: If storing in freezing temperatures, ensure all water is drained from the hose to prevent ice damage.

Image: The Kärcher high-pressure hose extension coiled for storage. Proper coiling helps prevent kinks and extends the life of the hose.
7. Troubleshooting
If you encounter issues with your hose extension, consider the following:
| Problem | Possible Cause | Solution |
|---|---|---|
| Water leaking from connections |
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| Reduced water pressure |
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| Hose appears damaged (bulges, cracks) |
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8. Specifications
| Feature | Detail |
|---|---|
| Model Number | 2.641-709.0 |
| Brand | Kärcher |
| Hose Length | 6 meters (approx. 19.7 feet) |
| Hose Type | DN 8 Quality High-Pressure Hose |
| Maximum Pressure | 2600 PSI (Pound per Square Inch) |
| Outside Diameter | 8 Millimeters |
| Nominal Wall Thickness | 0.8 Millimeters |
| Material | Plastic |
| Compatibility | Kärcher K2 - K7 series pressure washers (from 2008) with Quick Connect system |
| Item Weight | 0.75 Kilograms (1.65 pounds) |
9. Warranty and Support
For information regarding the warranty of your Kärcher 2.641-709.0 High-Pressure Hose Extension, please refer to the warranty documentation included with your original pressure washer or visit the official Kärcher website.
If you require technical assistance, replacement parts, or have questions not covered in this manual, please contact Kärcher Customer Support. Contact details can typically be found on the Kärcher official website or in your pressure washer's user manual.
- Kärcher Official Website: www.kaercher.com





