400ex carb tuning

[dabrowat]

I took out the spark plug today, and noticed it was black. Does that mean im running rich? I know there was a post about carb tuning, but i can't seem to find it. I have a K&N filter and White Bros Exhaust.

[beags86]

yes... i think the best jetting info is under foxhondarider - jetting and carb tuning.

http://www.exriders.com/vbb/showthread.php?s=&threadid=344906&highlight=400ex+carb+tuning