I have a cheap non-commercial powerwasher, Simonize I think it is called from Canadian Tire. It has a 5 or 6 h.p. Subaru (I can't remember and too lazy to go look) and it has a ton of long hours on it washing my dump truck everynight and it hasn't failed yet. Nothing but oil changes. Always starts first pull. If it's as good as the Subaru/Fuji engine that's in my Polaris Sportsman, shouldn't have any worries.