1. Introduction
The Kärcher T-Racer 350 is an accessory designed for Kärcher pressure washers (K2 to K7 series) to efficiently clean outdoor flat surfaces. This surface cleaner provides splash-free operation, making it ideal for patios, walls, garage doors, and other large areas. Its rotating twin-jet system ensures uniform cleaning results, and the integrated pressure adjustment allows for adaptation to various surface types.
This manual provides essential information for the safe and effective setup, operation, and maintenance of your T-Racer 350. Please read it thoroughly before first use.
2. Product Overview
The Kärcher T-Racer 350 features a robust design with a rotating arm equipped with two flat jet nozzles. It includes an ergonomic handle for vertical cleaning tasks and a pressure adjustment dial.

Figure 1: Top view of the T-Racer 350 with pressure adjustment dial.

Figure 2: Underside of the T-Racer 350, illustrating the rotating twin-jet arm.
3. Setup and Assembly
Before using your T-Racer 350, ensure all components are present and undamaged.
3.1. Nozzle Selection and Installation
The T-Racer 350 comes with multiple sets of nozzles, color-coded to match different Kärcher pressure washer models (K2 to K7) based on their power and water flow.
- Identify the correct nozzle set for your specific Kärcher pressure washer model. Refer to your pressure washer's manual for guidance if unsure.
- To change nozzles, remove the retaining clip (often an iron clamp) from the rotating arm.
- Carefully remove the existing nozzles.
- Insert the appropriate nozzles into the designated slots on the rotating arm.
- Secure the nozzles by re-inserting the retaining clip. Ensure they are firmly seated.
3.2. Connecting Extension Wands
The T-Racer 350 includes extension wands for comfortable use on various surfaces and heights.
- Attach the desired number of extension wands to the T-Racer 350 using the bayonet connectors.
- Secure each connection by tightening the locking rings (sleeves) firmly. This ensures stability during operation.
- Connect the assembled T-Racer 350 (with or without extension wands) to your Kärcher pressure washer's trigger gun.

Figure 3: T-Racer 350 connected to an extension wand for floor cleaning.
4. Operating Instructions
The T-Racer 350 is designed for efficient and splash-free cleaning.
4.1. Surface Preparation
- Before starting, sweep the surface to be cleaned to remove loose debris such as stones, leaves, and large dirt particles. This prevents damage to the nozzles and ensures optimal cleaning.
4.2. Pressure Adjustment
The T-Racer 350 features a pressure adjustment dial on its top surface.
- Rotate the dial to select the appropriate pressure setting for your surface. Lower pressure is suitable for delicate surfaces, while higher pressure can be used for stubborn dirt on robust surfaces.
4.3. Cleaning Technique
- Turn on your pressure washer and activate the water flow through the T-Racer 350.
- For horizontal surfaces (e.g., patios, driveways): Hold the T-Racer 350 firmly and move it slowly and steadily across the surface. Avoid pressing down too hard; the unit is designed to glide efficiently.
- For vertical surfaces (e.g., garage doors, walls): Utilize the ergonomic handle for comfortable vertical operation. Move the unit evenly across the surface.
- The rotating jets clean without splashing, containing the water under the brush skirt.
- During short breaks, the T-Racer 350 can be stood upright.

Figure 4: Cleaning a patio surface with the T-Racer 350.

Figure 5: Using the T-Racer 350 for vertical cleaning on a garage door.
5. Maintenance
Regular maintenance ensures the longevity and optimal performance of your T-Racer 350.
- After Each Use: Rinse the T-Racer 350 thoroughly with clean water to remove any dirt or detergent residue.
- Nozzle Inspection: Periodically check the nozzles for blockages or wear. If a nozzle is blocked, carefully clear it using a thin wire or the nozzle cleaning tool provided with your pressure washer. Replace worn nozzles to maintain cleaning efficiency.
- Storage: Store the T-Racer 350 in a clean, dry place, protected from frost.
6. Troubleshooting
If you encounter issues during operation, refer to the following common troubleshooting tips:
- Uneven Cleaning / Streaks:
- Check if nozzles are blocked or worn. Clean or replace as necessary.
- Ensure the T-Racer 350 is moved at a consistent, slow pace.
- T-Racer "Lifting" or Pulsating:
- This can occur with very powerful pressure washers. Ensure you apply sufficient downward pressure to keep the unit stable on the surface.
- Verify that the correct nozzles for your pressure washer's power output are installed. Incorrect nozzles can cause pressure imbalances.
- Poor Cleaning Performance:
- Adjust the pressure setting on the T-Racer 350 to a higher level if the surface can withstand it.
- Pre-sweep the area to remove loose debris that might hinder cleaning.
- For heavily ingrained dirt (e.g., moss, lichen), it may be necessary to alternate with a standard pressure washer lance or use a suitable cleaning agent.
- If dirty water accumulates, periodically clear it with a broom to allow the T-Racer to clean effectively.
- Unit Not Connecting Securely:
- Ensure all bayonet connections and locking rings on the extension wands are fully engaged and tightened.
7. Specifications
| Feature | Detail |
|---|---|
| Brand | KÄRCHER |
| Model Number | 2.643-250.0 |
| Product Type | T RACER 350 Surface Cleaner |
| Compatibility | Kärcher Pressure Washers K2 to K7 series |
| Weight | 1.3 Kilograms |
| Product Dimensions (L x W x H) | 71.2L x 28W x 97.1H Centimeters |
| Max Pressure | 2321 PSI (approx. 160 bar) |
| Max Flow Rate | 2.5 Gallons per minute (approx. 9.5 liters per minute) |
| Included Components | T Racer 350, Extension Wands, Nozzle Sets |
| Color | Black and Yellow |
8. Warranty Information
The Kärcher T-Racer 350 comes with a manufacturer's warranty.
- Warranty Period: 2 years from the date of purchase.
- For detailed terms and conditions, please refer to the warranty card included with your product or visit the official Kärcher website.
9. Support
Should you require further assistance or have questions not covered in this manual, please contact Kärcher customer support.
- Visit the official Kärcher website for FAQs, product registration, and service center locations.
- Refer to the contact information provided in your product packaging for local support numbers.