RE: 21cc Trimmer Power
w8ye,
I ported it out, electronic ignition, nice spark plug, better timing and large walbro. Not sure of the exact size on the carb, would have to measure it. This engine seems to run better than most engines I have used. usually I can only get 7,000 - 7,500. For some reason this engine has better running characteristics. Maybe I just got lucky, did a better job on the ports, I dunno?