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FREE SHIPPING — NorthStar Gas Cold Water Pressure Washer — 4000 PSI, 3.5 GPM, Honda Engine, Model# 15781520

Item# 15781520
4.7 / 5
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FREE SHIPPING — NorthStar Gas Cold Water Pressure Washer — 4000 PSI, 3.5 GPM, Honda Engine, Model# 15781520

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  • Honda GX390 389cc OHV engine for quiet, reliable performance
  • Comet direct drive triplex pump for efficiency and durability
  • Engine’s horizontal shaft design lasts up to five times longer life than vertical shaft engines
  • Easy Start prevents pressure buildups for smoother, easier recoil pulling
  • Adjustable pressure provides greater versatility
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Honda Engines

Engine Powered by Honda

Product Summary

This NorthStar Gas Cold Water Pressure Washer provides heavy-duty cleaning power and quiet, reliable performance in a rugged, easy-to-push steel cart. Great for cleaning everything from heavy machinery to ATVs. Powered by a reliable Honda GX390 389cc engine featuring a horizontal shaft design to last up to five times longer than vertical shaft engines. The high-quality Comet pump features a forged brass manifold and thermal protector for added durability and protection.

NorthStar pressure washers undergo thousands of hours of rigorous testing to ensure peak performance, plus include an industry-leading warranty to give you extra peace of mind.

What’s Included
  • (1) Pressure washer
  • (1) 50-ft. nonmarking high-pressure hose
  • (1) 3-ft. lance
  • (5) Quick-couple nozzles
  • (1) Downstream chemical injector
  • (1) Nozzle holder
Proven Performance

Ultimate Performance

Cleans Faster, Saves Time and Money

Even the toughest cleaning jobs are no match for this high-volume NorthStar Pressure Washer. With 3.5 GPM and 4000 PSI at your fingertips, you can blast through mud, dirt and debris quicker and more easily, boosting productivity and saving money. This high performance NorthStar Pressure Washer is an outstanding investment for protecting and maintaining equipment and property at home, job sites, factories, businesses and more.

Powerful Honda Engine

Never worry about your NorthStar Pressure Washer being ready for the task at hand. The commercial-grade Honda GX390 engine provides the ultimate reliability, plus easy-start convenience, improved power, greater fuel efficiency, longer run time and quieter operation.

Superior Quality and Durability

Proven Reliability

Equipped with a Comet triplex pump, this NorthStar Pressure Washer delivers field-proven dependability. The pump’s direct drive design requires fewer moving parts, minimizing maintenance and maximizing value.

Greater Resistance, Longer Life

Small details make a big difference. The Comet pump used in this high-performance NorthStar Pressure Washer is designed with high-end ceramic plungers to provide maximum resistance to corrosion and abrasion, helping to extend pump life.

Rugged, Easy to Push, Low in Vibration

All of it adds up to a cart worthy of this high-performance NorthStar Pressure Washer. The premium push-down style cart with large 15in. pneumatic tires is easy to maneuver from job to job, saving time and effort. A rugged 1 3/8in. steel full roll cage provides maximum protection, an essential feature for withstanding the hard knocks of job sites. We took it a step further, engineering a unique vibration isolation system to help protect the pump and engine from excessive wear.

Superior Quality
Convenience Featurese

Convenience Features

Save Time and Effort

The NorthStar pressure washer goes beyond power and performance with a long list of convenience features. With the removable NorthStar nozzle holder, the right nozzle is at your fingertips at all times — simply attach it to the pressure washer or to your belt. Adjustable pressure means you’re ready for virtually every job, big or small. Pump oil checks are quick and convenient using the handy sight glass. We’ve even made recoil pulling smoother and easier with Easy Start. A full complement of accessories is included but for even more options and capabilities, a full-featured accessory kit is available.

Proven Quality

Unparalleled Testing

No one builds pressure washers better. And no one tests pressure washers more. Northern Tool + Equipment engineers put each NorthStar pressure washer component through a series of extensive, real-world procedures in our Faribault, MN testing facility and in the field. Before you put your pressure washer to the test for the first time, you can feel confident that we already have.

Setting the Standard for Over 20 Years

For over two decades, NorthStar has set the standard for quality, performance and reliability. Contractors, professionals and do-it-yourselfers trust the superior quality of NorthStar to get the job done right the first time, every time.

Proven Quality
2 Year Consumer Limited Warranty. 90 Day Commercial Limited Warranty

The NorthStar Advantage

Industry Leading Warranty

NorthStar pressure washers are built to last. But to give you extra peace of mind, we stand behind our product with an industry-leading 4-year limited warranty.

Guaranteed Satisfaction

Shop in complete confidence, knowing Northern Tool + Equipment protects your investment and is ready to provide you with the assistance and helpful resources you need.

Superior Service and Support

Should you ever need service or support, help is a phone call or e-mail away. NorthStar’s field-trained technical staff is ready to help. For convenience, our professional in-store service department performs all repairs on site. Replacement parts are stocked at our Northern Tool + Equipment warehouse and ready to ship the same day your order is received.

Features + Benefits

Features for FREE SHIPPING — NorthStar Gas Cold Water Pressure Washer — 4000 PSI, 3.5 GPM, Honda Engine, Model# 15781520

  • Honda GX390 389cc OHV engine for quiet, reliable performance
  • Comet direct drive triplex pump for efficiency and durability
  • Engine’s horizontal shaft design lasts up to five times longer life than vertical shaft engines
  • Easy Start prevents pressure buildups for smoother, easier recoil pulling
  • Adjustable pressure provides greater versatility
  • Removable NorthStar nozzle holder system attaches to pressure washer or user’s belt
  • Welded push-down style steel cart with extended handle for smooth, balanced maneuvering
  • Easy-roll 15in. pneumatic tires
  • Sight glass allows for quick, convenient pump oil checks
  • 1.6-gallon gas tank
  • 3/8in. quick connection
  • Includes 50-ft. nonmarking high-pressure hose, 3-ft. lance, downstream chemical injector, five professional quick-couple nozzles (0°, 15°, 25°, 40° and chemical/soap)
  • 4-year consumer limited warranty; 2-year commercial limited warranty; 3-year limited warranty on Honda GX engine
Key Specs
Item# 15781520
Brand NorthStar
Manufacturer’s Warranty 4 Yr Consumer/2 Yr Commercial
Ship Weight 160.0 lbs
Pressure (PSI) 4,000
Flow (GPM) 3.5
Engine Honda
Engine Model GX390 OHV
Engine Displacement (cc) 389
Gross Torque 18.5
Pump Comet
Drive Direct
Gun Industrial rear entry w/ 3 ft. lance
Nozzle Type Quick-connect
Orifice Size 4.0
Hose 50-ft. gray high-pressure
Coupler Size (in.) 3/8
Cart Push-down style steel cart
Fuel Capacity (gal.) 1.6
Max. Inlet Water Temp (°F) 140
Max. Output Water Temp (°F) 140
Fuel Type Gasoline
Chemical Injector Yes
Adjustable Pressure Yes
Engine Oil Type SAE30
Pump Oil Type SAE 30
Engine Oil Included No
Pump Oil Included Yes
Low Oil Shutdown Yes
Thermal Protector Yes
Dimensions L x W x H (in.) 42.25 x 26 x 42.25

Customer Reviews

5 / 5
Good for occasional use. One issue quickly fixed.
January 4, 2018
I am a professional that used this machine for about 40 hours in total over the summer. I never used the downstream injector and started shooting water out of the hose. I called up North Star and they sent me a part to replace the downstream injector. I was pretty upset at first, but when the guy explained how it works and how easy the fix was I was not upset anymore.
This is a decent machine for a light user, but would not recommend it for a daily machine. Simply because it is low GPM and you should get something with an unloader that is not part of the pump. Same with the downstream injector. A belt driven pump would be better suited. I can’t say anything about the quality of the belt drive machine north star sells on here.
I would not recommend this for a daily professional, I would recommend this to someone or a business who will use this from time to time. A few times a week for a few hours at a time.
Describe Yourself: Professional
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5 / 5
Beast
April 13, 2017
Dgm9711

 from Snellville ga
This is a beast. Does good job. Happy so far!!!!
Easy to assemble and fill with oil. Holds about 1.5 gallons gas.
Describe Yourself: Professional
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1out of 1found this review helpful.
4 / 5
Wow, great power!!!!!
June 28, 2014
Wolfgang0

 from Deerfield,Wi
Great pressure washer with lots of power. Perfect for our painting business. The machine has two engineering issues: 1) The chemical injector is preset at a 15 to 1 part mx, completely inadequate to deal with mold on houses. I had to rebuild the injector for a new 5 to 1 mix for bleach. Why did they not put on an adjustable injector. 2) The adjustable psi knob has no stop so it came off and then was difficult to put back on with the spring creating tension and maybe I crossed the threads. 3) I had to rearrange the disconnects since they were backwards from the MTMs we had been using for the last twenty years and had to rework the wand, we have quick connects on all our grips so we can add whatever lengths we need.
One last note we received a great price on the machine and the customer service was great!
Describe Yourself: Professional
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4out of 4found this review helpful.
5 / 5
High Quality
September 6, 2013
Radioman113

 from North East
Received the pressure washer two days ago. It came in a box on a pallet. Easy unload with two guys. I unpacked the unit and had it together in 15 minutes. Very easy. The first thing i noticed was the physical size of the unit. It was much bigger than I expected. About the size of a large wheelbarrow. The quality of construction was top notch. The tubing used is heavy, well formed and welded together. All the components looked, felt, operated, smooth and exact. I was very impressed. I started it up and first trigger pull I felt as if I was holding a cannon! Just holding against the pressure was something you had to think about all the time or you’d get blown over! The adjustable pressure valve comes in very handy to adjust pressure to the job. The pressure adjust knob comes with a black plastic knob on it different from the catalog photos that show a bare brass post. I like that the pump has cooling fins cast into it to aid in cooling as I noticed some other pumps didn’t have this feature. The unit is a heavy duty beast that will impress even the harshest critic! Highly recommended!!
Describe Yourself: Home Handyman
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3out of 3found this review helpful.
1 / 5
pressure washer
January 10, 2013
02harley

 from Pasadena, Md
The pumps on the NorthStar pressure washers are junk. Only used a couple of times and had to replace the pump. The repair shop said the original pumps are junk.
Describe Yourself: Home Handyman
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3out of 14found this review helpful.
Response from Northern Tool:By Northern ToolFebruary 15, 2013
The new line of NorthStar cold water pressure washers have been upgraded for improved performance. This review and all prior reviews are from the previous model.
Reviews 15 of 18
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Replacement Parts
Call To Order: 1-800-657-0516

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Warranty

Manufacturer’s Warranty
4 Yr Consumer/2 Yr Commercial

Extend Your Warranty Coverage with a Service Protection Plan (SPP)
Repair Plan with Accidental Damage — 1 Year

Manufacturer’s Warranty + SPP = Up to 5 Years of Product Protection Including Drops, Falls, Spills, and Collisions

See Plan Benefits

FREE SHIPPING — NorthStar Gas Cold Water Pressure Washer — 4000 PSI, 3.5 GPM, Honda Engine, Model# 15781520

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FREE SHIPPING — NorthStar Gas Cold Water Pressure Washer — 4000 PSI, 3.5 GPM, Honda Engine, Model# 15781520 The price is $1,149.99.
FREE SHIPPING — NorthStar Gas Cold Water Pressure Washer — 4000 PSI, 3.5 GPM, Honda Engine, Model# 15781520
4.7 / 5(18)
Item# 15781520

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 Hide Similarities
Pressure (PSI)
3,100 3,000 3,300 4,000 4,000
Flow (GPM)
2.5 2.5 3.0 3.5 3.5
Engine
Powerhorse Honda Honda Honda Honda
Engine Model DH212 GX160 GX270 GX390 OHV GX390 OHV
Engine Displacement (cc)
212 163 270 389 389
Gross Torque
13.5Nm @ 2,800 RPM 7.3 13.1 18.5 18.5
Pump 3-piston axial cam CAT 4DNX CAT 4SPX Comet NorthStar industrial belt drive triplex
Drive Direct Direct Direct Direct Belt
Gun 3,600 PSI rear entry Industrial rear entry w/ 3 ft. lance Industrial rear entry w/ 3 ft. lance Industrial rear entry w/ 3 ft. lance Industrial rear entry w/ 3 ft. lance
Nozzle Type Five 1/4 in. quick connect Quick-connect Quick-connect Quick-connect Quick-connect
Orifice Size 3.0 3.0 3.5 4.0 3.5
Hose 30 ft. 5/16 in. nylon braided w/M22 connectors 50-ft. gray high-pressure 50-ft. gray high-pressure 50-ft. gray high-pressure 50-ft. gray high-pressure
Coupler Size (in.) M22 3/8 3/8 3/8 3/8
Cart Push-down style steel Push-down style steel cart Steel push-down Push-down style steel cart Steel pull-up
Fuel Capacity (gal.)
0.95 0.83 1.4 1.6 1.6
Max. Inlet Water Temp (°F) 140 140 140 140 140
Max. Output Water Temp (°F) 140 140 140 140 140
Fuel Type Gasoline Gasoline Gasoline Gasoline Gasoline
Chemical Injector Yes Yes Yes Yes Yes
Adjustable Pressure Yes Yes Yes Yes Yes
Engine Oil Type 10W 30 SAE30 SAE30 SAE30 SAE30
Pump Oil Type SAE 30W non-detergent pump oil SAE 30 nondetergent SAE 30 nondetergent SAE 30 Universal tractor transmission oil
Engine Oil Included No No No No No
Pump Oil Included Yes Yes Yes Yes Yes
Low Oil Shutdown
Yes Yes Yes Yes Yes
Thermal Protector Yes Yes Yes Yes Yes
Dimensions L x W x H (in.)
25 11/32 x 23 2/5 x 18 7/10 33 x 21.5 x 38 33 x 21.5 x 38 42.25 x 26 x 42.25 36 x 33 x 28 1/2

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item# 15781520

PSI stands for “pounds-per-square- inch.” It is the pressure resulting from a force of one pound applied to an area of one square inch.

Measured in Gallons Per Minute (GPM). It refers to the liquid flow during one minute of operation. The higher the GPM, the faster you will be able to clean.

The engine is the component in a machine that is designed to convert energy into useful mechanical motion.

Engine Displacement refers to the volume swept by all of the pistons inside the cylinders of an internal combustion engine in a single movement from top dead center (TDC) to bottom dead center (BDC). It is commonly specified in cubic centimeters (cc), liters (l), or cubic inches (CI). The power output of a combustion engine is directly proportional to the engine displacement.

Gross torque is the immediate twisting force required to turn a blade or pump at a given moment which measures the rotational force a machine can produce.

Fuel capacity refers to the amount of fuel that the fuel tank can hold.

Low oil shutdown is a feature that automatically shuts off the engine if the oil level is too low. This helps prevent damage to the engine that would have otherwise been caused by low oil levels.

Length x Width x Height

PSI stands for “pounds-per-square- inch.” It is the pressure resulting from a force of one pound applied to an area of one square inch.

Measured in Gallons Per Minute (GPM). It refers to the liquid flow during one minute of operation. The higher the GPM, the faster you will be able to clean.

The engine is the component in a machine that is designed to convert energy into useful mechanical motion.

Engine Displacement refers to the volume swept by all of the pistons inside the cylinders of an internal combustion engine in a single movement from top dead center (TDC) to bottom dead center (BDC). It is commonly specified in cubic centimeters (cc), liters (l), or cubic inches (CI). The power output of a combustion engine is directly proportional to the engine displacement.

Gross torque is the immediate twisting force required to turn a blade or pump at a given moment which measures the rotational force a machine can produce.

Fuel capacity refers to the amount of fuel that the fuel tank can hold.

Low oil shutdown is a feature that automatically shuts off the engine if the oil level is too low. This helps prevent damage to the engine that would have otherwise been caused by low oil levels.

Length x Width x Height

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