Rented a pressure washer this weekend to "Spring Clean" off the deck as my 1500 psi box store one was out of town. HUGE difference the 4000 psi machine vs the 1500 psi machine. Got me thinking about an upgrade, but do not want another engine to maintain. Found a Comet PTO driven pressure washer 4500 psi at 4.5 gallons per min that is reasonable in price and seems like a no brainer. No engine to maintain other than the tractor that I already maintain, might even mount it on a 3 point hitch carry all with a water tank just to be more portable. Kinda surprised that it was not a more common thing people do. Am I missing something? or maybe there are just not that many tractors out there? Seeking opinions before starting the "project".