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RB 400 Dirt Boss®

RB 400 Dirt Boss®
A premium pressure washer that combines excellent performance with durable build quality for long-lasting value.

Product 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. And 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.

Model Features

  • View the RB 400 features.
  • 2-Piece Lance & Gun Assembly
    This pressure washer features an easy, convenient 2-piece lance and gun assembly. The lance design is also extended for better accuracy in tall applications.
  • Anti-Vibration System
    This pressure washer features a STIHL-engineered 4-point vibration isolation system. This reduces pump vibration during use for increased unit longevity.
  • 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.
  • 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.
  • Easy-Access Inlet & Outlet Water Connections
    Both inlet (water coming into the pump) and outlet (water going from the pump to the gun) connections are easy to access for faster setup
  • 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.

Specifications

DISPLACEMENT
196 cc 12.0 cu. in.)
FUEL CAPACITY
3.6 L (3.8 qt.)
HOSE LENGTH
25'
WATER FLOW
620 L/h (2.7 gpm)
WATER PRESSURE
2,700 psi
CLEANING UNITS
7,290
WEIGHT
41 kg (90 lbs)
DIMENSIONS HANDLE DOWN
724 x 699 x 654 mm (28.5 x 27.5 x 25.75")
DIMENSIONS HANDLE UP
724 x 699 x 1003 mm (28.5 x 27.5 x 39.5")
 

Important Information

WARNING! Improper use of any power tool may cause serious or fatal injury. Read, understand and follow carefully the operating and safety instructions in your instruction manual before using such products.

STIHL products sold through U.S. STIHL Dealers are for distribution in the United States only.

Reviews

RB 400 Dirt Boss® is rated 4.5 out of 5 by 11.
Rated 5 out of 5 by from Great pressure washer everything I wanted and more I live in the Sierra Nevada mountains and have a few acres of cedar, pine and oak trees among others. The sap from the trees gets on everything. I had a less expensive power washer that did an ok job that I purchased when I lived in San Diego. It finally quit working. I have learned since moving to the mountains just pay a few extra dollars and get Still products. I own Still chain saws, pole saw, hedge trimmer, weed eater, backpack sprayers etc. I have never been disappointed. The power washer is just as good as my other Still products. It works perfectly, easy to start and with more than enough power to clean whatever comes its way.
Date published: 2017-09-26
Rated 4 out of 5 by from Great looking product, good features, just got it, have to tell more later. Great looking product, good features, To new to give an honest review.
Date published: 2017-09-15
Rated 5 out of 5 by from review best pressure washer that i have used. nothing at the big box stores can compare.
Date published: 2017-08-24
Rated 4 out of 5 by from Problems on first use I used this machine for 2 hours and the pump leaked black grease. I am not happy I'm glad it's under warranty I will have to see how it holds up after the repair is made.
Date published: 2017-08-22
Rated 5 out of 5 by from The power washer is easy to use, very sturdy and does a great job of cleaning surfaces The power washer is easy to use, very sturdy and does a great job of cleaning surfaces. Love the washer.
Date published: 2017-08-02
Rated 5 out of 5 by from Solid reliable machine Solid, well built machine that will get the job done. Starts on the first pull. Well worth the investment.
Date published: 2017-07-05
Rated 5 out of 5 by from Like a boss The times that I have used this it has been easy to start and worked like a Stihl should.
Date published: 2017-06-05
Rated 5 out of 5 by from Great Product Purchased the RB400 Dirt Boss earlier this week. So far I am very impressed with this machine. Watched the service technician check fluids, then fire it right up on the first pull. The Kohler engine runs very smoothly and it is much quieter in comparison to the engines on pressure washers I've used in the past. I like that the engine kill switch acts as a fuel cut off as well. This seems like a smart feature for a carb motor. STIHL thought this product out and it shows. The connections are simple, quick and do not over tighten with use (be sure to squeeze the wand trigger to release the pressure before you try and disconnect the wand after use). The hose doesn't kink and have a mind of it's own. The trigger on the wand pulls from the top side to reduce fatigue with extended use. The pressure is strong enough to tackle big jobs but smooth enough so that it doesn't wear you out with extended use also.Other features include light weight materials and ergonomic handles that allow one man to load the machine onto a standard full size pickup truck. These features also allow the machine to be maneuvered with very little effort in comparison to other pressure washer models. Longevity is tough to determine at this point, but if this machine is anything like the 7 other STIHL machines I've purchased, it will be cleaning my house, porch and driveway for a long time.
Date published: 2017-05-19
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Optional Accessories

  • Pressure Washer Accessories
    From rotating nozzles to water broom and hose extension, STIHL has all the pressure washer accessories you might need to make the best out of your power washer.

You Will Also Need

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Support

Product Instruction Manual (PDF)

STIHL Limited Warranty

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