ATV Repair and Maintenance Radiator flush October 18, 2015 Anyone flush out the radiators on your machines? I have an 07 Sportsman 700 that I bought new. two years ago I drained the radiator and refilled it with fresh stuff. Should I flush it? Is it even possible to flush it?? Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related