Ok here is the situation: It has been really dry around here and work has been real slow, so the last couple of days i have been messing around in the garage to keep myself busy. I run 2 echo srm-230s straight shaft trimmers they work great, but I have an echo GT-2400 curved shaft that is about 8 yrs old. It stopped running a few yrs ago I never had time to work on it so it sat for 2-3yrs. I would like to have it running as a just in case trimmer or when I get behind and can stick another guy on it. It starts up and kinda runs, but for it to run it has to be a full throttle and the choke has to be all the way on! This results in hardly any power, if you want power you have to toggle the choke on and off if you leave it off the engine dies. The carb is in proper adjustment according to the manufacturers specs, the air filter, fuel filter, and spark plug is good! What the heck is goin on here?!