The Stihl RB 800 is a gas-powered pressure washer offering a maximum water pressure of 4200 PSI and flow of 4 GPM. (Read full specs)
Features and Specifications
|Water||Cold (125°F max.)|
|Engine||429 cc 14 HP Kohler CH440 4-stroke OHV|
|Pump||Annovi Reverberi Triplex|
|Soap injection||Via siphon hose|
|Nozzles||0°, 15°, 25°, 40°, Soap|
|Quick connect nozzles||Yes|
|Hose||50 ft, ⌀3/8|
(D x W x H)
|Approx. 33.5 x 31 x 45.8 in|
|Wheels||2 wheels, ⌀13", pneumatic|
|Included accessories||Oil, wand, spray gun, high pressure hose, soap hose, 5 nozzles|
|Security||Low oil, trigger lock and thermal relief valve|
Unlike many websites, we did our best to research each of the specs above. That being said, we are not immune to making the occasional mistake or omission. Should you notice any missing or incorrect values, don't hesitate to suggest improvements so we can address the issue.
Zoom on the Stihl RB 800
The Stihl RB 800, a heavy duty, commercial pressure washer, gives its user an all-around versatile cleaning experience, topped off by the following features:
- spot cleaning of hard, unpainted surfaces or high reach areas
- intense cleaning of tough, paintless surfaces
- cleaning of painted and fragile surfaces
- application of detergent and cleaning solutions
The Stihl RB 800's brass triplex pump, powered by a powerful 429 cc (14 hp) engine, can provide a pressure of up to 4200 PSI (approximately 70 times more than a standard garden hose) and a flow of up to 4 GPM (values claimed by the manufacturer). The Stihl RB 800 thus has a cleaning power of 16800 Cleaning Units.
The Kohler CH440 engine of this gas-powered pressure washer relies on an old-school pull-start mechanism to get started.
Gasoline is stored in a fuel tank with a maximum capacity of 1.8 gallon.
Design & Handling
The Stihl RB 800 is very mobile, due to its hand truck design and approximate dimensions of D33.5 x W31 x H45.8 in. The robust and sturdy steel tubing frame offers longevity to the assembly. The folding handle enhances its mobility, while allowing for a convenient storage.
At 168 lbs, we can't really say that the unit is a lightweight, and manually lifting or transporting it could be a challenge. The major reasons for its heavy weight are its 429 cc Kohler CH440 engine, the triplex pump and steel tubing frame. However, the unit is mobile thanks to its two 13" pneumatic wheels, which add to its movability and allow it to be manipulated smoothly on the job.
The Stihl RB 800's package includes a spray gun, a wand, a pressure hose, 5 nozzles and a detergent injection feature, with a more detailed description below.
- Soap injection: Detergent is fed in through a siphon hose, since the device lacks a soap tank. As the Stihl RB 800 doesn’t include a soap dilution mechanism, the user must provide a correctly diluted detergent before proceeding to use it. When a soap nozzle is connected, the detergent will be added automatically to the water.
- Pressure hose: Using a set of convenient hooks, the included 50 ft ⌀3/8" high-pressure hose can be easily stored on the unit when it is not running.
- Spray gun and wand: A side hook enables you to easily store the included classic ergonomic spray gun and its wand. The gun features a rotating auxiliary side handle to further improve the comfort of both left and right-handed users.
- Nozzles: The 5 included nozzles, and the respective surfaces they’re appropriate for, are listed in the table below.
|Concrete, brick, masonry||Use with caution||Suitable||Suitable||Suitable||Suitable|
|Siding, gutters, house||Not recommended||Use with caution||Use with caution||Suitable||Suitable|
|Fencing, deck, patio||Not recommended||Use with caution||Use with caution||Suitable||Suitable|
|Lawn equipment, boat, RV||Not recommended||Use with caution||Use with caution||Use with caution||Suitable|
Note: The shape of the nozzles above is for illustration purposes only and may differ.
Red cross: Not recommended. Green check: Suitable. Orange check: Use with caution.
- Onboard storage: The Stihl RB 800 features a handy storage area, which allows you to neatly store nozzles and accessories and be always prepared by having everything needed at hand.
- Safety: Safety of operation is enhanced by a thermal relief valve (which helps to prevent internal pump damage), a low oil protection and a trigger lock mechanism (which prevents accidental operation).
- Accessories: Included with the Stihl RB 800 are also the owner's manual (opens in a new tab) and some basic documentation to get you promptly started, along with several accessories, such as oil, wand, soap hose, pressure hose and spray gun.
The Stihl RB 800's performance versus other pressure washers
The following charts are provided to give you an idea of how the key specs of the Stihl RB 800 compare to similarly priced pressure washers.
- With 4200 PSI, the Stihl RB 800 ranks as one that can reach an above average pressure, amongst the gas-powered products that cost between $1100 and $1500. If you're going after the highest possible power of the water stream, one of the best in this price range is the Lifan LFQ4515E-CA that can reach up to 4500 PSI.
- In the aforementioned price range, the 4 GPM (gallons per minute) of this washer makes it one of the best performing units in terms of the delivered volume of water.
- Reaching up to 16800 Cleaning Units (PSI X GPM), the RB 800 is one of the more efficient amongst its similarly priced peers. If you are after the highest overall cleaning power, the Lifan LFQ4515E-CA with its 18000 Cleaning Units is one of the products that can achieve the highest cleaning efficiency in this price range.
As you can see from this interactive chart, when compared to other gas-powered washers between 16500 and 17000 Cleaning Units, the Stihl RB 800 is on the average side of the price range.
Therefore, this pressure washer nicely fits in the expected budget for this kind of cleaning power.
Since revolutionizing the forestry industry in 1926 with the invention of the first two-person electric chainsaw, STIHL has become one of the top-selling brands of outdoor power equipment in the US and around the world. Their ever-growing product line includes gas-powered, corded-electric and battery products. Made in the USA and in China by over 2,000 dedicated employees at their state-of-the-art, dedicated, manufacturing facilities in Virginia Beach, VA, and in Qingdao, STIHL products are sold by local, authorized dealers in over 80 countries.
The Stihl RB 800 is covered under a warranty for up to 2 years. This warranty may be limited and may not cover all parts of the unit.
For more information about the warranty of Stihl pressure washers, please consult Stihl's warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-800-467-8445.