Ok here it goes everybody i need some serious help......when i first got this bike it had a overheating problem when driving slow speeds and well it went away and now it is back...my fan comes on it is full of fluid........the only thing that has been modified is the kn air filter........will that make it run lean on air and make it over heat...i am so lost ...when you first get on it it runs fine awesome power ......aill pul the front end no problem....but if the gas cap is to tight it creates a custion and then it will die then...so i was just riding with it looser...so i would vent on its own and well now that isnt even working.. i dont know what to do here ????? can any one help me with this i bought it used and am still making payments....please dont tell me it is junk already.........it runs great when it runs......but after it dies it is hard to restart doe my carb need a rebuild O.o? like alot of people say about the slide needles and stuff making it run rich and all.....but i have no gass in my oil it is like it loses gas completly.......even choking it like there is nothing there mabye fuel pump i dont get it .. and then with the over heating............rad is clear antifreeze is nice anc clean......could it be my pump mabye O.o? i dont know...? the fan does come on.......but only after the stupid hot light comes on is it my sensor .. i know those are expensive ......and right now the cheaper the better.......i am just seeking answers .. Thanks Ryan

 

it does sound like a fuel pump goin bad, but it also could be that ur valves are tight too is it hard to restart after its been running??? i'd check ur valves and while ur in there check ur cam for wear the exhaust lobes get worn out on the early model four strokes. i'd also say that ur sensor is bad or ur radiator isn't venting or maybe the waterpump is causing problems

 

at times it is an at times it isnt O.o that is why i am so thrown off i have been around 4 wheelers all my life and 3 wheelers as well....but never something this stupid had happened to me .....

 

Take the plastic off the tank and clean out the vent line.
Take the radiator off and wash it out with a garden hose(no hi presure)

 

I'm just throwing this out as I had similar problems with my 250 Xplorer. When it got hot and stalled it would be hard restarting. I finally took it in to get looked at and they replaced the stator. It solved it for me. The thing ran like a charm afterwards. Not saying it will help your situation but it did mine.