Just wanted to say that the specs on this site differ from what the manual says...couple things, the manual says gas tank is 4.5 gallons, weight between 520 and 604 pounds depending on which model you get - although I don´t know the difference between the models...it lists sg, g, d, f and one more I think. And one thing that I can see by physically looking at my Yamaha 1980 xs850 is that it has a radiator...so it´s not "air cooled"