I picked up a quart of stihl bar oil to run in it. When you say 4 stroke do you mean a pause rev series after the cut as the motor idols back down?
That term "4 stroking' has me buggered too, and my pc is slower than molasses running down hill in Feb... In Feb in NH it is dammned slow..
What I 'think' it means is the rungggg rung rung sounds a 2 stroke makes when it is either slowing down, or setting in idle. This is so, as the low speed mix should be a tad richer than the page linked says.
If you do as that page says, you end up at best rpm, somewhere mid way of too lean and too rich, and at best idle.
Personally I consider that setting incorrect, but it's close. The last little bit IMO should be refined once again. This time bewteen best rpm, and overly rich, leaving the setting just to the rich side of best rpm.
This in general usually allows the excess fuel to be there when you want to rev the saw for a cut.
The excess fuel tends to cool the engine any other times.
A tech would have to run the saw out of the box and use it a little bit too, and then begin to set these same settings you can.
So it should be safe enough for you to mess about with your new saw.
With new 2 strokes I like to make the oil mix a bit oil rich as well. You sure don't want a overly lean oil mix anytime.
The way I do this, using husky oil for gas is to use a 2.5 gallon mix bottle to a 2 gallon gas tank. So far the husky 242 xp I bought used in 1990 has liked that mix, and has never once caused me any problem, and is a strong running little saw.
on edit: I wouldn't run 90 gear lube either, not even in Ga.
