bobcat 440b

First off, i dont know ifi posted this in the right section …

Ok i have a bobcat440b with the kohler engine. The problem is that it doesnt want to start and once it does start you can’t put any type of load on it even moving it shuts it off. I am pretty sure that it has something to do with the Fuel, so i begun to check the filter and ect. I know that the carb is adjusted right because i adjusted it to the specs in the book. I was just wondering if there was some type of fuel sol. that might not be opening properly or something along that line?

Thanks