What is True Running please?
Putting everything back together after my Five Year service and prepping for the carb synchronization. I’ve done synchs several times now but always wondered what the MML means in the mechanical synchronization portion by “Check the true running of the engine. If necessary, adjust with the idle mixture screw.” Up to that statement, I flow right along, completely understanding the task as described. Then I read that statement and scratch my head. What does that mean? Mess with the mixture screws? Everything I’ve read about them (especially here on this website) is to back them out 1.5 turns then never touch them again. So I move on to the next step. Am I remiss in doing something “truly” important here?