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6 1/2-HP Dirt Boss Pressure Washer
- Mfg.#
- RB400
- Sku#
- 3649597
- Easy Start Pump System - The Easy Start Pump System features a pressure relief valve, allowing users to start the unit without any back pressure from the pump. It enables quick, easy starting with no hard cord pulls.
- Cast-Iron Liner - The high-quality cast-iron liner enhances durability and prolongs longevity, making sure the product is built to last.
- Automatic Fuel Shut-Off Valve - This pressure washer features a combined on/off and fuel valve control. This allows the user to shut unit off and close fuel valve automatically for easy, no-mess transport.
- Anti-Vibration System - This pressure washer features a STIHL-engineered four-point vibration isolation system. This reduces pump vibration during use for increased unit longevity.
- Stainless Steel High Pressure & Brass Detergent Nozzles - This pressure washer includes stainless steel nozzles for use with high-pressure water and a brass nozzle for use with detergent. These premium nozzles are designed to resist corrosion and wear.
* Estimated stock levels as of Mon, May 11, 2026. All items subject to prior sale. Prices may vary between stores and online. Please call ahead to confirm availability of items marked as Limited Stock.
Description
When you need a power washer that delivers top performance and can stand up to daily use, choose the STIHL RB 400 DIRT BOSS® pressure washer. It features a powerful 196 cc (6.5 hp) engine that can output 2,700 psi of water pressure at 2.7 gallons per minute. It also features the durability STIHL products are known for, with a brass manifold pump design, stainless steel valves, and ceramic-coated pistons. There is also a cast-iron engine liner and a built-in shutdown feature when the oil level is low. The RB 400 DIRT BOSS® also features an easy start pump system and convenient detergent injector system. With its 25' no-kink flex hose, you can clean more area without having to move the machine. Finally, the pressure washer uses a wide range of optional cleaning accessories, including rotary surface cleaner, water broom, nozzle options, hose extensions, a gutter cleaner, aluminum wand extension, pivot coupler, and official STIHL cleaning agents. When you need to demolish dirt on a daily basis, the DIRT BOSS® handles the pressure with ease.
Specifications
General
| Color | Black, Orange |
|---|---|
| Engine Displacement | 196 cc |
| Engine Power | 6-1/2 hp |
| Flow Rate | 2.7 gpm |
| Fuel Capacity | 115.2 oz |
| Fuel Tank Capacity | 3.8 qt |
| Fuel Type | Gas |
| Item Weight | 90 lbs |
| PSI (Maximum) | 2700 |
| Type | Pressure Washer |
Manufacturing Details
The following information is subject to change without notice
| Country of Origin | USA |
|---|
Dimensions
| Hose Length | 25 ft |
|---|
Related Documents
InstructionsPDF (PDF)
