There’s not really a “one setting” fits all!
In other words if you adjust your carb “just right” fer say 12” diameter cuts, then you move down the tree to 4” limbs, the “load “ or “less of a load” on the saw changes what your carb tries to draw! The heavier the load, (more teeth grabbin, pressing harder in the wood, etc) the more it will draw your carb “leaner”! (Because the screws are “set” and won’t allow more fuel to pass through, so air does instead)
It’s best to tune just a bit “rich” at “wot” so that as you start cuttin in the wood it leans itself into “tune”!
When’s it’s “rich” (H screw ccw), it will “miss” (or four stroke, some ppl call it), “lean” (H screw cw) it “smooths out” at “wot”!
Turn the H screw ccw till you hear the noticeable “miss”, then cw till you hear it smooth out! (lean)
Then turn it back to just inside rich! As you cut you should hear it lean out, miss, lean out, miss...if you add a little pressure on your saw it will lean out!
Thats right around your most efficient settin, between rpm’s and cooling! If you’re ”missin” your running cooler because of the oil in the fuel! Leaner is more air = higher rpm’s = hotter! (Notice as you run out of fuel your saw leans out and revs right before it dies!)
So really, as you are cuttin different diameters of wood, its best to keep a screwdriver in your pocket to make a quick 1/8 turn, (or whatever) rich or lean depending on what you need. (Or possibly just add or subtract your cuttin pressure on your saw as you move around the tree to “tune” it as you go.)
Does that make sense? Your chains sharpness/dullness effects how hard your saw has to pull as well! (As well as keeping all fuel lines, filters, new and clean) ((when you get to havin trouble tunin right, you most likely have an air leak or a clog)
There are some really good videos posted by ones on here that allows you to here the saw “missing” (4 stroking) at “wot” (wide open throttle) and leaning out just right as they go into the wood! Bsnelling a member here has several videos on it! Do yourself a favor and study those till you understand what “tuning in the wood means”!
So...long story longer, take the limiter caps off so you can “richen” (cool) your saw as you need! And prolong its lifespan!