July 14, 200818 yr my fan on my 07 rev 3 just suddenly stoped working. tryed bypassing the switch but still no life. any suggestions would be cool . chears
July 14, 200818 yr Just fixed a problem on an 07 250. The fan only worked when revs were off tickover. The cause was the black box as described previously was not mounted on the bolt behind the radiator. It seems to earth through the mounting bolt and was sparking. Once reconnected it worked fine. The bike has not been a great starter from cold bot now seems to be.
July 15, 200818 yr I had the same problem on my '02. The black box (I can't remember what it's called) went bad. The way I found out was the yellow wire coming out of it wasn't providing any juice, but it had juice going in. Not too long after that, the switch on the rad went bad, but that was easy to figure out. Just get a tester and you should be able to find the problem.
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