Hi
I own a k100rs 1988
I had a problem with the radiator and i remove it to fix it..
When i put it back the fan that it was working before now it doesnt...
I disconnect it from its fuse and connect it on a battery and its working...
So..the fan is working...but not when its connected on its fuse and the engine get hot....
Can someone help me here...from where to start checking?
Thanks

emelios

there have been many questions about this....

many have found electrical connections to be the main problem

have a look at this one

https://www.k100-forum.com/t2198-cooling-fan

I have seen this before as well.. (Hey.. Lunch Box rider!! ) Sometimes its as simple as shall we say...forgetting to plug the fan back in!!!