Question about Dewalt 3800 PSI Pressure Washer

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Trigger delay I have the dewalt 3800 and there is a ten second delay between the time I pull the trigger and the time it starts spraying.

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  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 1383 Answers

SOURCE: I have a dewalt 3750

I worked at a tool rental center while attending college and learned many tips and tricks about Dewalt and other brand pressure sprayers. Your machine probably has a 13 hp honda and has max pressure of about 3500 to 3700 psi. Most of the problems that customers had were engine related due to severe working conditions including totally wet engine /plug, wet air filter, and or other problems that were easy to remedy. We would set the pressure regulator to minimum pressure and explained to the customer how to increase the pressure as necessary but only after the engine was completely warmed-up to running temp to prevent engine stall. Your machine has a throttle lever between the tank and carb that should be set to max if you are going to set pressure at or neer max range. Most cleaning jobs do not need much pressure. Use lowest pressure to get the job done. Your engine developes around 13hp at about 3600rpm. If you want to maximize the life of you sprayer, then use your machine at about 70% of capacity or about 2000 to 2500 range that will allow you to run your engine slower increasing lifespan. Your sprayer is likely rated at 4 gallons per minute so make sure that the tip is that capacity. The tip has the size stamped which would show the fan degree and flow in gpm. The wrong tip, say a 3.5 gpm will strain the engine to point of stop because the smaller tip increases pressure. Most engine stall is due to high pressure setting on new machines. Lower pressure when warming-up machine and use max pressure rarely when necessary to max life. Please email for other information/questions or simple tests to determine faulty parts, good luck.

Posted on Jan 30, 2009

puertobori
  • 7733 Answers

SOURCE: Dewalt 3800 PSI operates great

When you pull to start squeeze the water hose tigger until start.

Posted on Oct 03, 2010

  • 1383 Answers

SOURCE: pressure washer starts fine and

The pressure unloader us usually the first part/s that fail. An unloader can fail resulting in no or very low pressure or good pressure, however will not unload when trigger is released and stall the motor. Look at breakdown for your pump and determine if unloader parts are available and reasonable. If too costly to replace these parts then install an ez start valve to help start engine and tie back wand handle to deal with unloader problem (workaround). Ez start valve can be seen here:
http://www.cmcpwe.com/accessorystartvalve.html

When not in use, store washer with oil in pump to displace the water. The oil will help lube internal parts and possibly cause the unloader to begin working (if stuck due to debris/rust). You can find a gizmo to help you feed oil into pump on ebay /other web locations. Good luck with your repair.

Posted on Apr 28, 2011

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1 Answer

Frozen pull cord


Hi Rudy - as long as your engine is locked up here's something to try - remove the bolts and see if you can pull the pull start off. If so, try to turn the piece the pull start activates with your hand or a pry-bar carefully - just to see if it the engine is frozen. If not frozen - if you take that pull-start, spray all over the inside anywhere you can - either a strong brake cleaner or some standard Penetrating oil - if you can't get it spinning you may have to disassemble, clean the pieces/sand, etc. and oil/grease those parts and reassemble. If you don't have q diagram of your pull start - just comment below and I'll see if I can find one - but if you go to a site that sells Dewalt pw parts - enter in your make/model and pullstart - and you should be given a parts breakdown with prices for every component of that pull start - which usually will also show you how it comes apart without the need for a manual. All The Best, Justin M. 17 South Industries, LLC DEWALT com
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Apr 16, 2016 | Dewalt Garden

1 Answer

The engine runs but the water will not come out under pressure


You must have blown out the cones (thats how the water gets compressed inside of pump) in the water pump-

You could try this though on the back of the washer right on top of the water pump is a black knob about the size of your hand that knob will adjust the pressure try turning it and see although I doubt that is the problem-

A pressure washer is not like a compressor you HAVE to pull the trigger every minute NEVER let it just sit there running without pulling the trigger to release the pressure that Dewalt 3800 psi washer you have is a great machine in fact we own 4 of them and they are pretty powerful and easy to damage if left running alone.

TY,

Perry Tradesman

Sep 05, 2014 | Dewalt 3800 PSI Pressure Washer

1 Answer

Can self timer delay be extended


Sorry, the 5200 is limited to a three-second or ten-second delay with the self-timer, and there is no provision for remotely triggering the camera.

Nov 29, 2013 | Nikon Coolpix 5200 Digital Camera

2 Answers

Dewalt 3800 psi


You checked the output to measure 5 GPM? How are you feeding that unit? What are you using for detergent? Have you adjusted the bypass valve?

May 04, 2013 | Dewalt 3800 PSI Pressure Washer

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