The NorthStar 157121 is a gas-powered pressure washer offering a maximum water pressure of 3100 PSI and flow of 2.5 GPM. (Read full specs)
This product was discontinued. For your convenience, we decided to leave this page up.
It was replaced by the NorthStar 1571221. However, you might still find it second hand on eBay, by clicking on the button below.
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Features and Specifications
| Fuel | Gas-Powered |
|---|---|
| Handling | Wheelbarrow |
| Water | Cold (140°F max.) |
| PSI | 3100 |
| GPM | 2.5 |
| Cleaning Units | 7750 |
| Engine | 187cc Honda GC190 OHV 4-stroke |
| Pump | Comet DWD Triplex |
| Frame | Steel tubing |
|---|---|
| Soap injection | Via siphon hose |
| Soap dilution | 15:1 |
| Nozzles | 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. 40.3 x 26 x 23.8 in |
|---|---|
| Weight | 91 lbs |
| Pressure control | Valve |
| Wheels | 2 wheels, ⌀10", never flat |
| Included accessories | Wand, spray gun, high pressure hose, soap hose, 4 nozzles |
| Security | Low oil, trigger lock and thermal relief valve |
| Emissions | CARB, EPA |
| Warranty | 10 years |
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.
Description
Zoom on the NorthStar 157121
In summary, the NorthStar 157121 is a heavy duty, commercial pressure washer, that offers an all-around versatile cleaning experience, and also:
- intense cleaning of hard, unpainted surfaces
- cleaning of painted or delicate surfaces
- applying detergent and cleaning solutions
Its power characteristics and design, its main features and all its additional features are presented ahead.
Power
The NorthStar 157121
Its triplex pump, which utilizes a 187 cc engine, may deliver a pressure of up to 3100 PSI (almost 52 times more than a standard garden hose) and a flow of up to 2.5 GPM. These values correspond to a cleaning power of 7750 Cleaning Units.
The Honda GC190 engine of this gas-powered pressure washer gets started by a classic pull-start mechanism.
Gasoline is stored in a steel fuel tank with a maximum capacity of 0.53 gallon.
Design & Handling
The wheelbarrow design of the NorthStar 157121 grants mobility and stability to the unit. The robust steel tubing frame guarantees longevity of the assembly. The handle adds to the 157121 convenience of transport.
The device weighs 91 lbs and thus, is far from lightweight. Transporting and manually lifting it may therefore pose a challenge. The main contributors to its weight are its 187 cc Honda GC190 engine, the triplex pump and steel tubing frame. However, the unit is mobile thanks to its two 10" never-flat wheels, which add to its movability and allow it to be manipulated smoothly on the job.
Main Features
The NorthStar 157121
Along with the NorthStar 157121 itself, the package also includes a spray gun, a wand, a pressure hose, 4 nozzles and a detergent injection feature, which are discussed in further detail below.
- Soap injection: Detergent is fed in through a siphon hose, since the device lacks a soap tank. The NorthStar 157121 has an automatic soap dilution mechanism, which dilutes the detergent using a 15:1 ratio. Whenever a soap nozzle is connected, the detergent is automatically added to the water.
- Pressure hose: The included 25 ft ⌀5/16" high-pressure hose can be neatly stored on the unit when idle thanks to a set of convenient hooks.
- Spray gun and wand: A side hook enables you to easily store the included classic ergonomic spray gun and its wand.
- Nozzles: The following table illustrates the 4 included nozzles, along with the surfaces which they are the most suitable for.
15° | 25° | 40° | Soap | |
|---|---|---|---|---|
| Concrete, brick, masonry | Suitable | Suitable | Suitable | Suitable |
| Siding, gutters, house | Use with caution | Use with caution | Suitable | Suitable |
| Fencing, deck, patio | Use with caution | Use with caution | Suitable | Suitable |
| Lawn equipment, boat, RV | 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.
Other Features
Some of the included accessories
- Onboard storage: The NorthStar 157121 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 trigger lock mechanism (which prevents accidental operation), a thermal relief valve (which helps to prevent internal pump damage) and a low oil protection.
- Accessories: Included with the NorthStar 157121 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 wand, soap hose, pressure hose and spray gun.
- Emissions: The NorthStar 157121 is EPA-approved and CARB-compliant. And so, this pressure washer is available for sale and purchase in any of the 50 states, including California.
Product Video
The NorthStar 157121's performance versus other pressure washers
The following charts are provided to give you an idea of how the key specs of the NorthStar 157121 compared to similarly priced pressure washers.
This unit is now discontinued, but used to be sold around $590.
- The NorthStar 157121 and its 3100 PSI, ranked amongst gas-powered pressure washers with a comparably low pressure output, considering the units that cost between $500 and $600. If you're going after the highest possible power of the water stream, one of the best in this price range is the DeWalt DXPW3625 that can reach up to 3600 PSI.
- In the aforementioned price range, this washer, with 2.5 GPM (gallons per minute), was placed on the lower end of the GPM scale. In case you are looking for a device which can most efficiently rinse away debris in the current price range, the Lifan LFQ3370 has the highest GPM of 3.
- Amongst similarly priced gas-powered devices, the 7750 Cleaning Units (PSI X GPM) of the 157121 ranked as low. If you consider the highest overall cleaning power as a really important factor, the Lifan LFQ3370 and its 9900 Cleaning Units has one of the highest cleaning efficiency of all the similarly priced units.
The bottom line
- Triplex pump
- Honda engine
- Designed to be stable
- Good range of nozzles included
- Automatic detergent dilution
- Onboard storage
- Several security features
- CARB-compliant
- 10 year (limited) warranty
- No soap tank
- Low PSI for the price
- Low GPM for the price
- Low CU for the price
About NorthStar
The NorthStar brand of outdoor power equipment is owned and distributed by the Northern Tool company, which was founded in 1981 in Minnesota, USA. The brand includes log splitters, generators, pressure washers, and air compressors. Though many of the components are manufactured in Northern Tool’s factory in China, NorthStar pressure washers are engineered, assembled, and tested in America, and powered by Honda engines. They include hot water, cold water, and soft-wash systems, along with many accessories. NorthStar brand products make up a large percentage of Northern Tool's product line.
Warranty Information
The NorthStar 157121 is covered under a warranty for up to 10 years. This warranty may be limited and may not cover all parts of the unit.
For more information about the warranty of NorthStar pressure washers, please contact the NorthStar Customer Support: 1-800-270-0810.
