Question about Dewalt 3700 Pressure Washer
Posted by Anonymous on
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
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
First off are you taking it to a factory owned or an authorized service center? There is a big difference in the quality of service that you receive. A lot of times DeWALT gets a bad rap because of poor service from authorized service centers. IF you take it to a DeWALT owned center they have guaranteed repair cost and will take good care of you. Next question how old are these units? Where is the leak? How often are you using them-ie how many hours per day, week....Also the oil leak is it in the engine or pump? Neither of those are manufactured by DeWALT they buy the engine from Honda and the pump on yours should be a general-so how could that be DeWALTS fault?
Posted on Apr 07, 2009
On most pressure washers you wont be able to draw soap/bleach into pump unless you are spraying on low pressure.There is a valve on the inside of inlet hose fitting that closes when high back pressure is sensed.Would it draw bleach into hose when wand tip is removed?
Posted on Nov 21, 2009
Tips for a great answer:
Jul 01, 2015 | Dewalt Garden
Sep 05, 2014 | Dewalt 3800 PSI Pressure Washer
May 09, 2011 | Simpson WS5040H Water Shotgun 5000 Psi...
My name is Dane and I am going to help you solve your problem.
A pressure washer pump is lubricated by the water running though it. You never, ever even start one when not connected to an approved water source. If the manual says that it has to have that presure, don't risk it. I would get an auxillary pump and install on your tank.
Well, I hope I've helped. If you found this information useful, please leave me some THUMBS UP if you think I'm deserving! :-) Thank you! Dane
Dec 05, 2010 | Garden
Oct 03, 2010 | Dewalt 3800 PSI Pressure Washer
Jun 21, 2009 | Karcher 2500 PSI Pressure Washer
Mar 24, 2009 | Dewalt 3800 PSI Pressure Washer
Jan 30, 2009 | Dewalt 3800 PSI Pressure Washer
Jul 02, 2009 | Dewalt 3700 Pressure Washer
Apr 28, 2009 | Dewalt 3700 Pressure Washer
182 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: