os 46fx break-in, being a newbie I read the manual on engine break-in......I was kinda confused that the instructions said to run it at full throttle on rich mix (four cycle sound), for ten seconds, then lean it out to two-cycle sound for ten seconds and repeat this procedure until you run a tank of fuel----back and forth every ten seconds.........I hear there are different methods of running-in a new engine.........I just want to know is this the preferred method....











flying is like breathing, everybody should do it........