OK here is whats going on. 2004 yfz450 was not getting gas. I took carb apart and cleaned, put back together and now quad is getting gas. only problem is that it wont start unless I hold the throttle. when i do that it idles real high. if i release the throttle the quad dies. i dont know a whole lot about carbs but im tring to keep from taking to the dealer and spending big bucks. if anyone has any thoughts or ideas i would appreciate it. thanks

here shold be idle adjust screw and idle mixture screw on the carb , try to play with em.