I bought this to wash off the skirting on my trailer before repainting. if I only did a 2' x 4' area and then stopped for a few minutes to move things it worked. When I got to the unobstructed side, I got about 25' of the 2' high siding done, moving fairly quickly and continuously, then the pump started cavitating and making noise but no pressure. I stopped, rececked all the connections and verified I had good hose pressure and flow to the unit, restarted and within 8' it did the same thing, and shutoff on thermal overload. If my unit is typical, this unit has inadequate cooling, and has such a short duty cycle that it is nearly unuseable. I am returning this unit to Walmart, and going back to a bucket and brush - less frustrating. I have had other pressure washers (Karcher) that did not have the problem. I think this is an unacceptable defect.
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