Basic rule of thumb is 1 turn out on both screws from a slightly bottomed out position.
Bottomed out meaning tighten the screw until it stops, go about this gently!!!!, until it stops, then loosen 1 full turn. That should be a good starting point. TO get it to idle, warm up the motor then mess with the low speed screw usually located on the right of the carburetor.
You may have to mess with the idle speed screw as well, which holds the throttle plate at varying degrees of openess.
Nice to see a fellow Northern New Yorker on here!