Actually it's 74cc.
Make sure it passes a vac/pressure test. Replace the gasket between the tank/handle/top piece. New plug (go NGK BPMR7A, gap it at 0.025", Champion plugs suck) Load it up with 32:1, tune it. Run the piss out of it.
Mine has the rev limited carb - I think they all do. It's a rather interesting design/idea. When the carb mechanically senses a certain type of vibration, the rev limiter dumps in fuel to effectively half choke the engine and control the RPM.
Absolutely make sure that you tune the high screw in the cut. Go rich, then turn the high screw in, in 1/8 turn increments, until it 4-strokes into the cut, but cleans up in the cut. The rev limiter on this carb will fool you into thinking it's tuned correctly, but the reality is that it will be too lean unless you tune it in the cut.