Simpson MS61084-S - 3400 PSI 2.5 GPM 196cc Gas Pressure Washer
The Simpson MS61084-S is a gas-powered pressure washer offering a maximum water pressure of 3400 PSI and flow of 2.5 GPM. (Read full specs)
Page Content
Features and Specifications
| Fuel | Gas-Powered |
|---|---|
| Handling | Wheelbarrow |
| Water | Cold (90°F max.) |
| PSI | 3400 |
| GPM | 2.5 |
| Cleaning Units | 8500 |
| Engine | 196cc 6.5 HP Kohler SH265 OHV 4-stroke |
| Pump | OEM Technologies™ Axial Cam |
| Other model numbers | 61084, 61085, MS61085 |
| Frame | Welded steel |
|---|---|
| Soap injection | Via siphon hose |
| Nozzles | 0°, 15°, 25°, 40°, Soap |
| Quick connect nozzles | Yes |
| Onboard storage | Yes |
| Hose | 25 ft, ⌀5/16 |
| Hose storage | Hooks |
| Dimensions (L x W x H) | Approx. 30.4 x 20.5 x 24 in |
|---|---|
| Weight | 64 lbs |
| Wheels | 2 wheels, ⌀10", pneumatic |
| Included accessories | Oil, wand, spray gun, high pressure hose, soap hose, 5 nozzles |
| Security | Low oil, trigger lock and thermal relief valve |
| Emissions | CARB, EPA |
| Warranty | 5 years |
| UPC | 879399005565 |
We've taken extra care to research and verify each of the specifications above. That said, occasional mistakes or omissions are still possible. If you spot any missing or inaccurate information, feel free to suggest a correction so we can address it.
Description
Zoom on the Simpson MS61084-S
In a nutshell, the Simpson MS61084-S is a heavy duty, commercial pressure washer, which not only offers an all-around versatile cleaning experience, but that also allows:
- precise spot cleaning of hard, unpainted surfaces, reaching elevated areas, and effectively removing stubborn stains
- comprehensive cleaning of hard surfaces, vehicle washing, and readying surfaces for painting
- soft cleaning of delicate surfaces, and gentle cleaning for larger areas with low pressure
- using cleaning solutions, and rinsing surfaces to remove residue
The following sections will present you in detail its power characteristics and design, its main features and all the additional features it has to offer.
Power
Powered by a 196cc (6.5 hp) engine, its axial cam pump can deliver a pressure of 3400 PSI (around 57 times more than a standard garden hose) and a flow of up to 2.5 GPM (CETA-certified values). With these values combined, the Simpson MS61084-S boasts a cleaning power of 8500 Cleaning Units.
To initiate the Kohler SH265 engine of this gas-powered pressure washer, a traditional pull-start mechanism is employed.
Fuel for the pressure washer is housed in a steel tank capable of holding up to 3.4 gallons of gasoline.
Design & Handling
Characterized by its wheelbarrow layout, the Simpson MS61084-S provides improved mobility and stability, facilitating easy movement and steadfast operation for effective cleaning results. The welded steel frame's robustness ensures the assembly's longevity, maintaining stability and protecting internal components, even in the harshest environments. The reversible handle offers further versatility, as its different positions make the unit less bulky when stored.
With its 64 lbs weight, this unit offers a manageable size that allows for easy handling by most individuals, enhancing user convenience during operation. The incorporation of the 196cc Kohler SH265 engine and a durable welded steel frame contribute considerably to its overall weight. Despite this, the MS61084-S's two 10" pneumatic wheels ensure effortless maneuverability.
Main Features
The Simpson MS61084-S comes with a spray gun, a wand, a pressure hose, 5 nozzles and a detergent injection feature, which are detailed below.
- Soap injection: While not equipped with a soap tank, the device maintains detergent supply through a siphon hose. Once a soap nozzle is connected, the pressure washer automatically blends the detergent with the water flow.
- Pressure hose: With a set of convenient hooks, the unit provides a convenient way to store the included 25 ft ⌀5/16" high-pressure hose when not in use, keeping it organized and readily accessible.
- Spray gun and wand: A side hook enables you to easily store the included classic ergonomic spray gun and its wand.
- Nozzles: Refer to the table below for details on the 5 included nozzles and their recommended surface applications.
0° | 15° | 25° | 40° | Soap | |
|---|---|---|---|---|---|
| Concrete, brick, masonry | |||||
| Siding, gutters, house | |||||
| Fencing, deck, patio | |||||
| Lawn equipment, boat, RV |
Note: The shape of the nozzles above is for illustration purposes only and may differ.
Not recommended. Suitable. Use with caution.
Other Features
- Onboard storage: The Simpson MS61084-S 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 trigger lock mechanism (which prevents accidental operation) and a low oil protection.
- Accessories: The Simpson MS61084-S comes with an owner's manual (opens in a new tab) and some basic documentation to get you quickly started. On top of that, you also get spray gun, oil, pressure hose, soap hose and wand.
Product Video
The Simpson MS61084-S's performance versus other pressure washers
The following charts are provided to give you an idea of how the key specs of the Simpson MS61084-S compare to similarly priced pressure washers.
- Equipped to deliver up to 3400 PSI, the Simpson MS61084-S is recognized as one of the gas-powered models delivering higher-than-average water pressure, priced between $400 and $500. For those prioritizing maximum water stream power, consider the Simpson PS61201, boasting 3500 PSI, as a standout performer in this price range.
- With a water flow rate of up to 2.5 GPM, this washer ranks at the higher end of the price range mentioned above, offering a substantial volume of water. If your priority is efficient debris removal, consider one of the products with the highest GPM in this price range, such as the Excell EPW2123100, boasting 2.8 GPM.
- With a total of 8500 Cleaning Units (PSI X GPM), the MS61084-S stands as one of the most efficient devices in its price range. When considering the importance of superior cleaning power, the Simpson PS61201 stands out with its 8750 Cleaning Units, boasting one of the highest cleaning efficiencies among similarly priced units.
Price comparison
As you can see from these interactive charts, when compared to other gas-powered washers between 8000 and 8500 Cleaning Units, the Simpson MS61084-S 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.
The bottom line
- In the expected price range
- 5 year (limited) warranty
- Designed to be stable
- Good range of nozzles included
- Onboard storage
- Several security features
- High PSI for the price
- High GPM for the price
- High CU for the price
- No soap tank
About Simpson
Simpson has over 50 years of experience making quality products for the outdoor power equipment industry. Part of the FNA Group based in Pleasant Prairie, Wisconsin since 2006, they are a vertically-integrated company, meaning most of the parts and accessories are manufactured and assembled by them. Their manufacturing facilities are international, but their gas-powered pressure washers are made in the USA. With the company motto "Driven by Performance", Simpson continues to offer a great variety of pressure-washing systems for the homeowner or the professional contractor.
Warranty Information
The Simpson MS61084-S is covered under a warranty for up to 5 years. This warranty may be limited and may not cover all parts of the unit.
For more information about the warranty of Simpson pressure washers, please contact the Simpson Customer Support: 1-877-362-4271.

