Originally Posted by
neobart
Starting point on a Novarossi carb is flush or close to on both LSN and HSN.
I have a Novarossi N21BF. On mine, flush for the HSN is a good starting point, but if I were to set the LSN flush it would be WAAAAY too rich(definitely would not run).
For a ballpark LSN setting I turn the screw all the way in(while pulling the carb open slightly), then out 3 - 4 turns.
It's possible your engine has a different carb, but I just wanted to put that out there...