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NorthStar Professional Series Pressure Washer - 4000 PSI, 3.5 GPM
Item# 1578202
NorthStar® professional pressure washers combine industrial Honda Engines with high quality Cat direct drive triplex pumps. Professional pressure washers are designed by Northern engineers to meet the demands of the professional and rental markets. Pressure washer equipped with Cat pump, the pump with nine lives. Quality is the difference. Chosen by 86% of self-service car washes (the most demanding industrial application). Field proven 3-4 times longer seal life. The least expensive pump to maintain. The Cat 66DX pump features a brass manifold and ceramic plungers. Rear hose-entry spray gun with split lance keeps the hose out of the way for easy handling. Pressure (PSI): 4,000, Flow (GPM): 3.5, Engine: Honda, Engine Model: GX390 OHV, Engine Displacement (cc): 389, Gross Torque: 18.5, Pump: Cat 66DX, Drive: Direct, Gun: Industrial rear entry with 3 ft. lance, Nozzle Type: Quick-connect 0°, 15°, 25°, 40°, soap nozzle, Orifice Size: 3.5, Hose: 50 ft. gray high-pressure, Coupler Size (in.): 3/8, Cart: Push down cart w/10 in.pneumatic tires, 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 motor oil, Pump Oil Type: SAE30 non-detergent oil, Engine Oil Included: No, Pump Oil Included: Yes, Low Oil Shutdown: Yes, Thermal Protector: Yes, Dimensions L x W x H (in.): 34 x 21 x 38 Powered by premium Honda GX390 OHV engine featuring cast iron sleeve and low oil shutdown Horizontal shaft engines last five times as long as vertical shaft engines Premium industrial Cat direct drive triplex pump with thermal protection and ceramic plungers Forged brass manifold gives improved strength over cheaper aluminum Easy Start stops pressure build-up during start-up Adjustable pressure for job versatility Sight glass lets you quickly check pump oil 50-ft. nonmarking gray quick-couple hose of high-quality steel-braided rubber Hose reel and mount sold separately Professional 0°, 15°, 25° and 40° quick couple nozzles and detergent nozzle Downstream chemical injector Industrial rear-entry spray gun with 36in. lance is designed for extended use Big 10in. pneumatic tires Push down-style cart enables smooth, balanced mobility Durable 1 3/8in. tubular steel frame Optional hose reel mount (Item# 157823) gracefully integrates with existing frame Replacement parts are available through Northern Tool Parts Department 1-800-270-0810
Questions & Answers for NorthStar Professional Series Pressure Washer - 4000 PSI, 3.5 GPM
Question
On this model, what is the adjustable PSI range?
asked 1 year, 2 months ago on NorthStar Professional Series Pressure Washer - 4000 PSI, 3.5 GPM
by
GORDY2
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5 answers
Answers
answer 1
This NorthStar Professional pressure washer does allow for adjusting the PSI. We recommend using the NorthStar pressure washer gauge, check out the link below.
answered 1 year, 2 months ago
by
NorthstarExpert5
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answer 2
I just leave it all the way up and choose the appropriate nozzle for the job
answered 1 year, 2 months ago
by
chiprchk
- Benicia Ca.
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answer 3
Adjust your nozzle size rather than your machine.
Unless you're blasting steel, 4.5 (2500 psi) or 5.0 (2000 psi) orifice nozzles will do the trick. Go bigger if you want less pressure.
Unless you're blasting steel, 4.5 (2500 psi) or 5.0 (2000 psi) orifice nozzles will do the trick. Go bigger if you want less pressure.
answered 1 year, 1 month ago
by
Pro123
- Minnesota
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answer 4
I have not tried to adjust the pressure valve, but I was easily able to reduce the engine RPM slightly to bring the pressure down to 2500 psi.
answered 1 year ago
by
Gdee
- Florida
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answer 5
From CAT tech line: "it is fine to reduce the pump RPM. It can operate down to 100 RPM." - reduce RPM - reduces PSI
answered 11 months ago
by
Gdee
- Florida
-1point
0out of 1found this answer helpful.
Question
pressure gauge
i just bought this washer and a 5000psi pressure gauge to put on it, BUT where on the pump do i put it? on the outlet side yes but where and do i need a "T" adapter?
asked 1 year, 11 months ago on NorthStar Professional Series Pressure Washer - 4000 PSI, 3.5 GPM
by
BAR7
- BOCA RATON
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3 answers
Answers
answer 1
You can install a pressure gauge anywhere in the discharge line of the system between the pump and the nozzle. I would recommend that you install a 3/8" tee at the discharge port of the pump between the pump and the quick disconnect (where you hook up the hose). Make sure that you use fittings that are rated for the pressure used and burst pressure rated for at least 1.5x working pressure. Hydraulic fittings can normally be used for these types of applications. I would use stainless steel. You'll never have to worry about them. Make sure you use Teflon tape or thread sealant when installing.
answered 1 year, 8 months ago
by
24TASMAN
- Houston, Texas
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answer 2
The gauge does go on the outlet side of the pump. You would connect the gauge first, and then your hose. The fittings needed will depend on your pump. We do have a quick couple gauge that works great. Please see below...
answered 1 year, 8 months ago
by
NorthStarExperts
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answer 3
I would put a 3/8" diameter tee on there with a quick connect adapter from northern tool.
I would not recommend leaving it on the machine while your using the machine due to vibration would just keep throwing the gages calibration off.
if you do it this way you can store the gage away from the machine like in your toolbox and when you want to regulate the pressure just use your quick disconnect already on your machine and attach your home made quick connect gage tool there.
Please use good judgment in safety practices because you are dealing with high pressure and if that gage is pressurized while in place you will need a way to bleed the pressure off of the gage if you dont use a tee.
If it were me I would get a gel filled 5000 psi gage and make a 3 way quick disconnect and ask northern tool for a short piece of hi pressure hose rated for your machine and loop it up to where the nozzles are stored drill an extra hole and put another quick disconnect there for your gage this will be out of the way and look very professional.
Hope this helped!
I would not recommend leaving it on the machine while your using the machine due to vibration would just keep throwing the gages calibration off.
if you do it this way you can store the gage away from the machine like in your toolbox and when you want to regulate the pressure just use your quick disconnect already on your machine and attach your home made quick connect gage tool there.
Please use good judgment in safety practices because you are dealing with high pressure and if that gage is pressurized while in place you will need a way to bleed the pressure off of the gage if you dont use a tee.
If it were me I would get a gel filled 5000 psi gage and make a 3 way quick disconnect and ask northern tool for a short piece of hi pressure hose rated for your machine and loop it up to where the nozzles are stored drill an extra hole and put another quick disconnect there for your gage this will be out of the way and look very professional.
Hope this helped!
answered 1 year, 8 months ago
by
Ed01
- NC
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Question
Why would water flow out of chemical injector hose?
From time to time I have low pressure and water flows out of the chemical injector pick up. I have this exact model of pressure washer.
asked 1 year, 10 months ago on NorthStar Professional Series Pressure Washer - 4000 PSI, 3.5 GPM
by
RAD1
- Gainesville, GA
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3 answers
Answers
answer 1
There could be a few reasons this is happening, to accurately determine what the problem is...
Carefully remove the hose barb holding the hose, inside there should be a spring, an o-ring, and a ball valve.
1. The spring may be broken, used, or worn and needs to be replaced.
2. The o-ring may be damaged or worn and need to be replaced.
3. The ball valve may be pitted or worn and need to be replaced.
If this is the case please contact NorthStar for the replacement parts at phone number 1-800-270-0810.
Carefully remove the hose barb holding the hose, inside there should be a spring, an o-ring, and a ball valve.
1. The spring may be broken, used, or worn and needs to be replaced.
2. The o-ring may be damaged or worn and need to be replaced.
3. The ball valve may be pitted or worn and need to be replaced.
If this is the case please contact NorthStar for the replacement parts at phone number 1-800-270-0810.
answered 1 year, 8 months ago
by
NorthStarExperts
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answer 2
You may be using the chemical nozzle tip with the siphon hose off the injector.
answered 1 year, 6 months ago
by
ranger6
- North Carolina
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answer 3
Top 100 Contributor
There is a check valve (little steel ball) and a spring inside the connection for the chemical draw. That is what prevents chemical from being drawn up under high pressure.
It's possible your spring is weak/too strong or the ball is not seating properly. I would take in to the store to be examined/repaired.
It's possible your spring is weak/too strong or the ball is not seating properly. I would take in to the store to be examined/repaired.
answered 1 year, 6 months ago
by
Diamond500
- Bandera, TX
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Question
Is the chemical injector adjustable?
Can you control the ratio of water to cleaning solution?
asked 10 months ago on NorthStar Professional Series Pressure Washer - 4000 PSI, 3.5 GPM
by
Anonymous
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3 answers
Answers
answer 1
No, the chemical injector on this NorthStar pressure washer does not adjust for controlling the cleaning solution intake, however, you can dilute/concentrate the solution before applying it for use.
answered 10 months ago
by
NorthstarExpert11
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answer 2
On my pressure washer, the ratio of water to cleaning solution is not adjustable. I had to put the chemical hose into a known quantity of water and measure how long it took for it to completely empty. Then I was able to figure the ratios assuming 4 gallons per minute of input flow into the pressure washer.
Be sure and use the chemical nozzle as it won't work with any of the other nozzles.
Be sure and use the chemical nozzle as it won't work with any of the other nozzles.
answered 7 months ago
by
Maddog11capt
- Alabama
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answer 3
No.
You could if necessary dilute the soap mixture that you are injecting if it is too strong.
You could if necessary dilute the soap mixture that you are injecting if it is too strong.
answered 2 months, 2 weeks ago
by
rkief
- Ft Lauderdale, FL
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Question
Water source water tank
Will this pressure washer do good if it is hooked up to a water tank ? since there is no pressure will it be able to draw water out without any problems?
asked 11 months ago on NorthStar Professional Series Pressure Washer - 4000 PSI, 3.5 GPM
by
dalisic
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3 answers
Answers
answer 1
This NorthStar Professional Series pressure washer will need a pressurized water source. For this pressure washer the water source will need to fill a 5 gallon bucket in 72 seconds or less. Without enough pressure from the water source pump cavitation will occur and damage the pump.
answered 11 months ago
by
NorthstarExpert5
+1point
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answer 2
Top 100 Contributor
It needs to have a direct pressure water source like from your house
answered 10 months ago
by
Pasiuk57
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answer 3
No. The input water pressure / volume must be sufficient to fill a 5 gallon bucket in under 70 seconds. If I go to a friend or neighbors house I alway take a bucket and test their water flow rate before using my pressure washer. You could install a pump between your tank and the pressure washer to provide the proper volume of water.
answered 7 months ago
by
Macs4dx2
- Massachusetts
+1point
1out of 1found this answer helpful.
Question
How do I remove the inline water filter screen?
Do I just pull it off or are tools required?
asked 1 year, 11 months ago on NorthStar Professional Series Pressure Washer - 4000 PSI, 3.5 GPM
by
ranger6
- North Carolina
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2 answers
Answers
answer 1
The filter can be removed by pulling it off. It can be cleaned by running it under tap water.
answered 1 year, 8 months ago
by
NorthStarExperts
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answer 2
You have to wrench it off. I blow air through em in reverse to clear em. FYI buy yourself screen filters for your garden hose at every connection to avoid this hassle.
answered 1 year, 1 month ago
by
Pro123
- Minnesota
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Question
Horsepower?
asked 10 months ago on NorthStar Professional Series Pressure Washer - 4000 PSI, 3.5 GPM
by
susanb
- HTMUA
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2 answers
Answers
answer 1
This NorthStar Pressure Washer comes with a Honda GX390, which was previously rated at 13 horsepower.
answered 10 months ago
by
NorthstarExpert5
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answer 2
13 Horsepower Honda engine
answered 2 weeks, 1 day ago
by
sparky3780007
- Minneapolis, MN
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Question
Pressure washer video question
In the video he first used the chemical injector to spray the soap but when he went to wash off the soap he didn't disconnect the soap injection system. Won't that continue to pull soap thru the pressure washer?
Products related to my question
asked 5 months, 1 week ago on NorthStar Professional Series Pressure Washer - 4000 PSI, 3.5 GPM
by
Anonymous
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2 answers
Answers
answer 1
When applying soap, you use a low pressure soap nozzle which creates suction and draws the cleaning solution through the hose. In the video he changes to a higher pressure nozzle to clean the solution off, this higher pressure does not create the needed suction to lift the solution through the hose.
answered 5 months, 1 week ago
by
NorthstarExpert5
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answer 2
No. The only time the siphon tube will pick up and inject cleaners is when the low velocity chemical nozzle is installed. When you swap out that nozzel with any of the high velocity nozzles (0 degree thhrough 25 degree) the water moves so fast that the siphon will not pickup detergent. This can be observed by shooting the pavement and observing no foam.
answered 1 week, 1 day ago
by
Macs4dx2
- Massachusetts
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Question
what is the maximum temperature the pump can receive?
asked 1 year, 4 months ago on NorthStar Professional Series Pressure Washer - 4000 PSI, 3.5 GPM
by
jjjjjjjjjjjjjj
0points
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2 answers
Answers
answer 1
The maximum inlet temperature of this pressure washer is 140 degrees F.
answered 1 year, 4 months ago
by
NorthstarExpert13
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answer 2
Pump is designed for cold water only!
answered 1 year, 2 months ago
by
ranger6
- North Carolina
+1point
1out of 1found this answer helpful.
Question
Ratio of chemical to water
If I put the chemical hose into a bucket of concentrated cleaner, what would the ratio of cleaner to water be?
asked 4 months, 3 weeks ago on NorthStar Professional Series Pressure Washer - 4000 PSI, 3.5 GPM
by
Anonymous
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1 answer
Answers
answer 1
When using the chemical injector, there would be a mix of approximately 10 parts water to 1 part chemical coming out the nozzle.
answered 4 months, 2 weeks ago
by
NorthstarExpert29
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