Question about Dewalt Garden
Why will wassher not pull soap from jug even after new hose installed?
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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
sounds like you need a seal and bladder rebuild < if you liver in a cold environmet for winters please dont forget to winterize your washres every year before winter
Posted on Sep 15, 2009
After a long none use, I tried to wash my driveway and powered on the washer,it did, but when i tried to engage the power washer by pressing the wand lever, it did not engage. What can I do to get the power washer working?
Posted on Jan 30, 2010
When you run the unit and shut if off, release the pressure from the spray wand before trying to restart the engine. This built up pressure will cause it to be very hard to start as you have found out. If it does not start on the second pull release the pressure again. Another option is do do what I did on mine. I simply put a pull tie on the handle so I can pull the trigger back and use the pull tie to hold the trigger open. Make sure if you do this, that you remove the high pressure orifice from the end of the wand before attempting to start the engine. Otherwise the pressure will come on abruptly and could injure you or do property damage.
Posted on Apr 25, 2010
It sounds like the (RMW 2.2 G24) pump has gone out. Mine had this problem after about 6 hours of use. I was able to order a new pump for around $160.00, and then installed it myself. Go figure it was just out of warranty. I think my next pressure washer will be one with a professional pump as I was told the one on my husky is only rated for about 40 hours of use.
Posted on Aug 09, 2010
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