While you're at it, clean the reeds as well, may not hurt to just replace them, not expensive at all. Soak the carb for some time, the 2 stroke mix tends to seperate then solidify everywhere you need fuel to flow. Drain and clean the tank really good, it will save you some grief later. Probably wont hurt to put in a new plug and check the rats nest AKA air filter. One last thing, check the rubber boot and carb to engine gasket, a vacuum leak sinks these things.