I am using LawnBoy with the green label. I had read somewhere on here the Lawnboy was good stuff?
I have run the same fuel in an FG60-r3 without any issues.
After much reading about the 83 I was planning on switching oils and going with the oil Ray English recommended after my current can was empty.

I made no adjustments to the valves. I ran it right out of the box, and it does come with the necessary tools.
Kevin