I did remove and disassemble the carb. The float device area was clean and seems to work properly. The float has good 'bounce' to it as well. When I simply 'drip' gas from a dropper into the carb intake gas line the engine runs until it uses the fuel in the carb and line. If I stop feeding the line or connect it to the fuel pump, it then dies when the fuel runs out. Therefore I've concluded (not real confidently) that the fuel stops at the fuel pump. Someone has now suggested that I replace the fuel hoses because one (the pressure line) may have a leak, thus not allowing pressure to get to the fuel pump. I will replace the hoses tonight. I have a pretty detailed manual on the ATV but I can't find out if the pressure is coming from the carb to the fuel pump or from the fuel pump to the carb? Which way is the pressure flowing?