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DeWALT DPH3800 3800 PSI Pressure Washer Parts
How to Winterize a Pressure Washer
Learn how to properly winterize your pressure washer by adding antifreeze to the pump, draining the oil, and adding oil to the piston. Read the full article for a step-by-step guide.
Quick Fix: How to Replace the Outlet Connector on a Karcher Electric Pressure Washer
Learn how simple it is to replace the outlet connector on your Karcher electric pressure washer by reading this repair article.
A Quick Fix: How to Replace the Pump on a Pressure Washer
This article outlines the steps to replace or service the pump on your pressure washer. Doing this repair yourself will save you money and time.
How to Replace Fuel Lines on 2-Cycle Engines
This article explains simple procedures to determine the correct fuel line routing for any 2-cycle engine carburetor.
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Question: Dewalt Dph3800-CHEM INJECTOR
I have a dewalt dph3800 pressure washer. On my job site yesterday it started spewing water out of the chemical injector (part #169 on the diagram) and back into the cleaning solution. I took it apart and inside I found a small broken o-ring. Bought a new o-ring but have no idea where to put it. My only guess is that the ball inside that valve is struck in the open position and all I need to do to get it working properly is replace that little o-ring in the correct spot. Where does it go? There's no diagram of the inside of part 169. Any ideas?
Reply: Dewalt Dph3800-CHEM INJECTOR
It goes in the top of the fitting the injector hose attaches to.