I downloaded the operator's manual for the 1902-1 model, Top, and aside from a different wand design (adjustable nozzle instead of set of interchangeable nozzles) and having a different engine (side valve Briggs instead of Chinese copy of Honda GXV160) it looks much the same as my Ryobi. As I read the manual it also seems to operate the same way as the Ryobi: constant engine speed unless you intervene manually to change it, and if you let it run without water flow for too long, its thermal bypass will dump some hot water onto the ground. I haven't found any mention of the engine shutting down or dropping to a lower speed.
Have I read the wrong manual, or am I missing something?
