So I got my Kubota air screw with the T handle. I followed the advice here about loosening the carb and twisting it in place. I did remove the radiator shroud and the gas tank. Have to say that it was a pain in the a##. I got it done but the carb did not spin around enough to get a clear shot at the copper cap over the original screw so i ended up using a very sharp wood drill bit. I am planning to re-jet this winter and i will be pulling the carb all of the way out to get it done. I did get a lot better performance by adjusting the screw from 1/2 turn to 3/4 turn to compensate for my altitude (4300ft.). Again, advice from this site has been invaluable to me. Thanks.

 

I need to adjust air fuel mixture screw..
How many turns ? 😪

 

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