Hey guys.
my 2017 KLX 250s revs up by itself to about 4-5k rpms when the engine is hot when I pull the clutch in or neutral. Re built the carb with stock parts about 5 months ago (3k kilometres). It’s so annoying. I have read about vacuum leaks, some people say carb tuning. Anyone found they had the same problem?
I did the clutch plates 5 months ago aswell, not sure if one of that has anything to do with it either .
cheers

 

You have a lean idle circuit condition going on here.
That can be caused by a vacuum leak at the carb manifold boots and/or a lean jetting/carburetor adjustment issue.
What have you done with the bike since it was running normally? Start there.

 

That's called the "Last Touched Rule".

What was touched last?

 

^what Grunty said