A fellow on the F800 site has just pointed this out to me. He found out with the help of his GS911, that his fan was frozen. (The GS911 has a fan test.) I plugged mine in to find the same thing. He was able to free his up only to find a little while later it was frozen again. With the help of a little WD40, I was able get mine to spin up only to fail a second fan test. A little more persuasion and it was spinning again. But I can hear the fan clicking or buzzing as if something is caught in it. It looks clear and I think it may be internal. As in bearings. We both live in the Pac. NW so the fan doesn't get a lot of use. But, it would be nice to be there when we need it. It's a bit of a job to pull it all apart so I hope I do not have to go this route. I think there are probably a lot of F800GS riders out there that will find they have the same problem (anybody who goes off road, basically) and don't know it. I sure don't think a lot of dealers know about it. Mine, for one.