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Water is coming out of the side my pump 4200 dewalt

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How ofte I have tochange the water pump oil


every time it gets corrupted with water , it will turn from golden/clear to gold/milky when its time to replace it

an allways ck your oil level in pump and engine an refill if needed when adding gas to tank , its natural to be missing some each time as equipment gets older an older

Nov 07, 2015 | Dewalt Pressure Washer. 4200 PSI 4.0 GPM...

1 Answer

What maintenance should we do now, at beginning of season? We did none at end of last year.


Pray that it works.

All pressure washer pumps (even electric driven ones) should have pump saver antifreeze and lubricate cycled into them upon storage. Fuel for the engine should have fuel stabilizer put in the fuel and cycled through the carburetor and fuel system.

I have seen pressure washers come in the Spring with bad pumps where they stored in the customer storage or garage buildings that had froze and damage internal parts.

May 02, 2015 | Dewalt DXPW4240 4200 PSI Direct Drive...

1 Answer

Spark plug size for pressure washer


Just pull out the suspect plug and replace with same.

Sep 06, 2014 | Dewalt Pressure Washer. 4200 PSI 4.0 GPM...

1 Answer

How do I release pressure from the hose on a pressure washer


would it be possible to unscrew the quick connect fitting SLOWLY until water starts to drip out of threads thus allowing the pressure to drop down slowly to the point of being able to release the hose coupler?

Jul 28, 2014 | Dewalt Pressure Washer. 4200 PSI 4.0 GPM...

1 Answer

What oil weight is used in the pressure washer pressure unit


Non-detergent 20-30-weight goes into pump port, and is filled about half way.
Ordinary motor oil 10-W30 or 40 goes into engine port.

Nov 11, 2012 | Dewalt Gas Pressure Washer: 4200 psi 4.0...

1 Answer

What oil to use


Your manual will say to use General pump oil GP100..or whatever DeWalt's number for that may be. See dewalt.com for their proper part number. From the pictures of that model I see on line, that is a General Pump and they have recommended Non-detergent 30w standard motor oil in the past. We like to use a non-foaming full synthetic 20-50w racing oil on these high RPM pumps.

Oct 20, 2012 | Dewalt DXPW4240 4200 PSI Direct Drive...

1 Answer

Hi, My Dewalt 3100 pressure washer pump wash leaking water from a check valve or overflow plug Do you know whats wrong?


The Dewalt 3100 came with 2 different pumps. The Blue Cat pump and the oil free pump that was made by DeWalt.
You may just have a bad Thermal relief Valve on the unit.

You can find the parts diagram at www.allpartsinc.com

Sep 08, 2011 | Dewalt DPH3100 Gas Pressure Washer

1 Answer

Water goes thru. have hydrulic oil to level. gun semas to stick on. NOT GETTING ANY PRESSURE AT NOSSEL.


Hydraulic oil?
Is this a pressure washer?
Pump should be half full of SAE20 or SAE30 non-detergent motor oil.
Engine should have 10W30 motor oil.

If you have a pressure washer ... and not water is coming out end of gun:
Take all hoses off machine.
Look at incoming water hose connection.
The should be a filter washer.
Clean or replace filter washer.
Hook up water and turn on water.
Water should come out other side of pump.
Turn on power washer and see if water coming out of pump is pressurized.
Now hook up pressure hose without gun.
Turn on pressure washer and see if water comes out of hose and is pressurized.
Finally, the gun may be bad.
We used to replace guns when they went bad.

Oct 24, 2010 | Dewalt 3800 PSI Pressure Washer

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