I was just trying to get an educational thread about tuning in the beginners forum.

I understand the bleeder valve on my YS is different than the carb on my OS 2 strokes, but the principle is the same - adjusting the mixture of fuel and air at low engine speed. YS engines, despite the pressurized fuel system, do suck fuel at idle speed like a standard 2 or 4 stroke.

The point I was hoping to make - if it is correct - is that tuning any of these engines so that they maintain a constant idle RPM for a period of time seems to be the most accurate and reliable method I have found.

I agree the transition quality and pinching the lines gets you close, but if you don't have tons of experience where do you go from there? I feel like the steady RPM way takes some guessing out of the game.

I wish I had known this a year ago, which is why I'm posting it in the beginners forum.