Hi 

i have a gas gas txt pro 250 09, I've just strip the bike for the frame and swimg arm to get powder coated as the frame had hardly any paint on it. The bike is all back together. (What a nightmare getting the rear brake bleed!) ?. The problem I have is the fan will not turn off when starting the bike. not sure if I've connected the right wire of the thermostat. ones wire to earth and other to the relay thing on the fan. Is that right? Or I have not bled the  radiator correctly. Was all working before I strip the bike down. Any one got any tips of the trade would be appreciated thanks gary 

I am not an expert on your bike but the fans usually don't come on when the bike first starts.  The fan comes on when the water temperature get high enough to turn on the thermo switch.  It should turn on and off as needed while you are riding.