i expect there is a bit of dirt that has got stuck in the float needle seat when it was on its side this is very common,just take the bottom of the carb off and slide the float pivot pin out and the float will fall down and the float needle will be either attached to it or just resting against it,the bit the float needle goes into is the float needle seat and that is where the crap will be, its brass and will just need blowing out with some air.ok good luck ,adam
adam bike doctor, January 2007