Sportsman 570 valve seal replacement. I started to make some videos of me doing my sons Sportsman 570 valve seal replacement. I could not find a whole lot of information on doing this, so I have created my own videos for it. I will post the PDF for the sportsman 570 also. I hope this will help someone who is willing to try on their own. Making sure you get a gasket kit, new anti-freeze, otherwise you will have to do this twice.