Hi guys

Just replaced the base gasket on my 06 300 pro. All seemed well in testing: fan came on as usual. Today big ride in the mountains. Fan stops working. I just filled it over and over and came home fine. BUt now I have to see why the fan won't come on. I may have damaged something in the fan assembly or the wiring when i removed the rad: is that a tight one or what? I was carefull but there was some contact frame to rad when I reinstalled it. I still have OEM lights on the bike, so all the wiring too as you can kinda see here, mid ride.

This was the hill it stopped working on, my buddy rides up on his yzf250

So am wondering how to proceed with checking the fan. Tried searching, so any advice or links much appreciated

Try taking the wires from the thermostat and join them together.Start the bike and if the fan starts your thermostat is nackered( quite common on gasgas) if not connect fan to a 12v battery to test it.

Hope this helps

not so easy on the 06, since the thermo now seems embedded in the upper front of the rad, but I should be able to get 12v to the fan: is a car battery OK?

Yep - I used a car battery to test mine - just make sure it's disconnected from everything else so I'm not responsible for blowing anything else up

OK all