No "intake" like airbox/filter, carburetor, reeds and manifold side of the cylinder. You don't want to get water in there or the "exhaust" side either. I use rubber plumbers caps to seal off the carbs and plugs before I get the hose out. Worst case scenario is you get tons of water on the cylinder, hydro-lock it and mess up your rod on the crank. But you have to be a real knuckle-head ever to get that much water in during a washing. Grab a bucket and go to town.