The NorthStar 157136 is a gas-powered pressure washer offering a maximum water pressure of 4000 PSI and flow of 3.5 GPM. (Read full specs)
Zoom on the NorthStar 157136
In a nutshell, the NorthStar 157136 is a heavy duty, commercial pressure washer, which not only offers an all-around versatile cleaning experience, but that also allows:
- thorough cleaning of hard, paint-free surfaces
- cleaning of painted and frail surfaces
- applying detergent and cleaning solutions
With an impressive 389 cc (11.7 hp) engine, its triplex pump delivers a pressure of 4000 PSI (roughly 67 times more than a standard garden hose) and a flow of up to 3.5 GPM (values claimed by the manufacturer), resulting in the NorthStar 157136's cleaning power of 14000 Cleaning Units.
The Honda GX390 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 1.6 gallon.
Design & Handling
The wheelbarrow design of the NorthStar 157136 grants mobility and stability to the unit. The strong steel tubing frame assures assembly longevity. The handle adds to the 157136 convenience of transport.
The device weighs 249 lbs and thus, is far from lightweight. Transporting and manually lifting it may therefore pose a challenge. The main contributor to its weight are its 389 cc Honda GX390 engine, the triplex pump and steel tubing frame. However, the unit is mobile thanks to its two 15" never-flat wheels, which add to its movability and allow it to be manipulated smoothly on the job.
The NorthStar 157136 comes with a spray gun, a wand, a pressure hose, 4 nozzles and a detergent injection feature, which are detailed below.
- Soap injection: While the device doesn't feature a soap tank, detergent supply is ensured by a siphon hose. The NorthStar 157136 includes an automatic soap dilution mechanism, which will dilute the detergent using a 15:1 ratio. Whenever a soap nozzle is connected, the detergent is automatically added to the water.
- Pressure hose: A neat storage for the included 50 ft high-pressure hose is facilitated by a set of convenient hooks.
- Spray gun and wand: The included classic ergonomic spray gun and its wand can be easily stored in a side hook.
- Nozzles: The following table illustrates the 4 included nozzles, along with the surfaces which they are the most suitable for.
|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.
- Onboard storage: The NorthStar 157136's handy storage area lets you store nozzles and accessories, and thus, you’ll be always prepared and have everything necessary for the job at hand.
- Safety: Safety of operation is enhanced by a low oil protection, a thermal relief valve (which helps to prevent internal pump damage) and a trigger lock mechanism (which prevents accidental operation).
- Accessories: On top of an owner's manual (opens in a new tab) and the usual documentation to get you swiftly started, the NorthStar 157136 also comes with soap hose, wand, pressure hose and spray gun.
- Emissions: The NorthStar 157136 is EPA-approved and CARB-compliant. This means that this pressure washer can be bought and sold in each of the 50 states, including California.
The NorthStar 157136's performance versus other pressure washers
The following charts are provided to give you an idea of how the key specs of the NorthStar 157136 compare to similarly priced pressure washers.
- The NorthStar 157136, which can reach up to 4000 PSI, has one of the higher pressure outputs of the gas-powered units that cost between $1550 and $1800. As for the device with the most powerful water stream, in this price range, one of the top products is the Lifan LFQ4515E-Elite with 4500 PSI.
- The achievable water flow of this washer, which reaches 3.5 GPM (gallons per minute) can be described as low, compared to other devices in its price range. If rinsing away debris most efficiently is your priority, one of the devices with the highest GPM in this price range is the NorthStar 157160, which can reach up to 5 GPM.
- With 14000 Cleaning Units (PSI x GPM), the 157136 is on the low end when compared to other similarly priced gas-powered devices. If you consider the highest overall cleaning power as a really important factor, the Lifan LFQ4515E-Elite and its 18000 Cleaning Units has one of the highest cleaning efficiency of all the similarly priced units.
As you can see from this interactive chart, when compared to other gas-powered washers between 14000 and 14500 Cleaning Units, the NorthStar 157136 is on the expensive side of the price range.
While certainly not the cheapest of its cleaning power range, purchasing it could most likely also mean enjoying the reliability of a high-end product.
Features and Specifications
|Water||Cold (140°F max.)|
|Engine||389 cc 11.7 HP Honda GX390 OHV 4-stroke|
|Pump||CAT 5CP4120CSS Triplex|
|Soap injection||Via siphon hose|
|Nozzles||15°, 25°, 40°, Soap|
|Quick connect nozzles||Yes|
(L x W x H)
|Approx. 50 x 29 x 26 in|
|Wheels||2 wheels, ⌀15", never flat|
|Included accessories||Wand, spray gun, high pressure hose, soap hose, 4 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.
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.
The NorthStar 157136 is covered under a warranty for up to 4 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.