MCM120, MC1 drive. When started boat idles at approx. 600-700 rpm. After WOT runs, in neutral, boat idles high at approx 1200 rpm. If I kill engine and restart, it again idles at 600-700 rpm. I think the idle screw on carb is adjusted correctly, and the mechanical advance in the dist. is clean and free. I would say sticking throttle cable, but rpm always returns to correct after restart. Any idea? Thanks.
