Having problems with your Dewalt 3700 Pressure Washer ?

How do you replace chemical injector on pump - Dewalt 3700 Pressure Washer


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How do you replace chemical injector on pump - Dewalt 3700 Pressure Washer


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We want to replace the pump to our DEWALT DP3750 pressure washer and can not ge tthe pump to come off the engine. how do you get it to come off?


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Why is my pressure washer not pulling the detergent in the injectors the model is a jet usa 7 ohp 3800psi .I am droping the fillter end into chemicals but it does not pull it into the pump ???


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Troy-Bilt 2550 20293 pressure washer not producing pressure. Worked when last used 2 months ago. Pump pistons are moving up and down when engine is pulled through. Inlet water is flowing through pump but no pressure when engine is started. I have the same problem. Water flows thru the pump when not running, but no flow or goes in by-pass mode when I start the pump. The pump being Troy Bilt Model 020296-01. I replaced unloader valve even. Anything else I can do?


You replaced the unloaded valve. Are you positive you have the unloader screwed to pressure and not turned the opposite way? You will have no pressure if it is adjusted wrong. One other thing I have encountered is that the unloader has a ball bearing ... Pressure Washers

Dewalt pressure washer dp3750 pump diagram - Dewalt 3700 Pressure Washer


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I have a Generac pressure washer, model #01450-0, with a Honda 5hp motor. The motor runs fine, but the pressure hose pulsates as if the pump is intermittently making pressure, and the pressure out of the sprayer is about half of what it should be. A friend suggested replacing the seals in the unloader. I bought an unloader kit, replaced everything and it still runs the same. It will build a small amount of pressure, spray for a few seconds, then the pressure dropps to almost nothing. Any help ap


Take a small diameter wire and poke thru the discharge hole of the spray head to clean out.\015\012Second time in 6 months that I had the same problem. The problem is alway in the spray head. ... Pressure Washers

I have a Dewalt 3800 pressure washer fitted with a 67DX39G11 pump. Started unit up for the first this year, has pressure for 15 seconds then nothing. Water is flowing through okay, everything seems in order but no pressure. Unit is 2 years old but has only 15 hours of total running time. I think the pump has failed, is it normal for a pump to fail with only 15 hours on the clock?


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I have a sears pressure washer, model 580752300. The pump on the underside vibrated lose and broke a couple screws. It came off and the oil drained out. I replaced the screws and it's ready to go except I can't find out how much replacement oil to put back in. Sears has larger containers but won't tell you how much oil to put in. However, there's a pricey pre-measured container they want to make you buy. Anybody know how much oil goes in that pump?


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Chemical injectors pressure washer - Pressure Washers


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North star eletric hot 2000 psi 3.5 gal per min oil pump had blown shaft seal. replaced with new pump. put small allen plug in return port. I have oil flow to the pump but none comes out port leading to burner even with shutoff switch removed and pump turning. Installed test gage 0 pressure. Took off bypass line and ran into can. pumps small amount of fuel into can that way but with uneven flow & small bubbles. nomatter what I do I just can't get fuel outlet port to burner. pump # A2VA-7116 pl


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There is a bolt item 8 below on the very end of the drive shaft that has to be removed before you can remove the pump assembly. \015\012\015\012See page 16 item 8 of this ... Karcher 2500 PSI Pressure Washer

My pump is gone on my pressure washer. The honda engine is GC 160. The pump is a model VRX2527G. How do I pull the pump off the engine to replace it. I removed the four bolts from the pump housing, but the pump is still tight to the shaft. Please explain the removal process.


Hello,Your pump sits on a keyed shaft, versus a taper fit. This is good, since tapered shafts will require a puller to remove the pump.Since the pump is already bad, you have a few options available to you. 1) W ... Honda Pressure Washers

I recently replaced the water seals, V-packing & all six check valves in a CW-3504-4MGH pump on a MiTM 3504 pressure washer that had very low pressure. Usually this would fix most pressure problems on most machines, but in this case it had little to no effect. I suspect that the unloaded is the culprit in this case, but since I have had little experience in repairing unloaders (let alone adjusting them). I would appreciate feedback from anyone that has experience in this area. Thanks


Check the wand tip for a tiny piece of debris like a tiny rock or something stuck in the tip. ... Mi T M Pressure Washers

Low pressure I have dewalt 3800 pressure washer and it went from working fine to a bit more pressure than a garden hose. The screen is clear at the water intake witch leads me to think it's the cat pump,but how do i know.


Hi\015\012some valves at cat pumps need a 100 psi pressure to open and close correct.\015\012when there is air in the pump the valves wil not open and close till air is bleeded.\015\012take of highpressure hose, open watertap and bleed pump till no ... Dewalt 3800 PSI Pressure Washer

Had the Northstar 3000 psi Pressure Washer for 2 months and it started leaking oil from the pump during use. Took it to Northern and they are replacing the pump under warranty but said it was likely because I was using quick connects on my garden hose coupling and that was restricting the water flow making the pump overheat. They said never to use quick connects on the garden hose unless the opening is at least 5/8". Does anyone make such a quick connect? I hate having to screw the garden hose o


It is easy to check if your hose and quick connects are supplying enough water to the pump. Your pressure washer gallon per minuite requirements are printed on the machine and also on the pressure tips in GPM. Your post indicates 2.5 gpm but check yo ... Northstar Pressure Washer 3000 PSI

Pressurized water sprays out bottom of pump but no visible cracks, seals or washers maybe? Are these parts available, I only see a replacement pump complete unit... Unit has less than 10 hrs use.


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I have a Karcher G2600 OR Pressure Washer, 2600 psi, 2.5 gpm. PN 1.194 506 0. gas engine works fine and water flows fine but pump is not adding pressure to stream. Checked and cleaned inlet water filter.


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I was given a low hour, 10 year old, CH PW205002LE 6.5 HP gas vertical shaft 2000 PSI/2.5 GPM pressure washer with a Lavor pump. It did not work - no pressure. I found a broken o-ring on the brass unloader valve and replaced it with a ring as close in size as I could find as the part break down doesn't state size. Everything was very clean. I coated everything with silicine grease and reassembled, seating the brass piston? as deep as it would go. I had to press the trigger in order to get the mo


My personal experience is that 40% of all the sellers I dealt with on e*** exaggerated their products or worse. If you decide to go the e*** way be sure you put it on a good credit card so you can get your money back if it's a bust. Don't use your ba ... Campbell Hausfeld Pressure Washers

Assembly I recently purchased a pressure washer from Home Depot. It is rated at 3100 psi. It is a comet pump with a honda gas engine. The assembly instructions recommended that I remove the plug on the top of the pump and replace it with a vented plug that was provided. However, none of the other enclosed manuls talk about the vented plug. Am I reading the assembly insturctions correctly. Should there be a vented plug ?


HI your machine would have been delivered with a blanking plug in the pump. You will need to remove this and fit a vented pump or your pump will build up too much pressure inside. ... Comet BXD2527 Pressure Washer Pump

My pressure washer is not pressurizing the water. i took the bottom assembly off the pump and there are three spring loaded plastic pieces in there. underneath these springs is a mushroom shaped plastic piece. two of the three mushroom pieces were contorted and need to be replaced. how do i get them?


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I recently purchased a northstar 4000 psi pressure washer. I had the same series pressure washer for the past 6 years and used a downstream chemical unloader quick connect to pull chemical. I attached it to the pressure washer and it is not pulling. I havent modified anything and I dont want to pull chemical through my machine.


The injector might be worn out or have something inside of the valve causing it not to ****. If you are using a new high pressure hose or a longer hose this may also have an effect over the injector not working. ... Northstar Professional Series Pressure Washer 4000 PSI

My Karcher K3.48M pressure washer remains in the low pressure mode even when I return the pressure nozzle to the high pressure position. How can this be corrected. The pump seems to build up the pressure because when I release the handle the pump motor stops. This is a fairly new pump which was purchased in the latter part of last year(2010). Could this have been caused by the detergent I have been using which is an automotive shampoo? Please help I love this washer and for the times that I u


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