[DriverRider]

Hi;
Anyone know the trick to a leaner setting on the pilot screws?
The manual says to set them to 1 1/2 turns out for high elevations. Is this rich or lean? I know; dumb question...
I have mine set at 4 turns out and since replacing my air filter the mileage has gone way down from 45-50 mpg at 60-65mph.
Carbs cleaned, syn, new plugs and air filter.

Turning screws in would be leaner, no trick. High altitude would need a leaner setting and 1 1/2 sounds about right.

So yours have always been 4 turns and since replacing filter mileage has tanked. Are you in the mountains somewhere.