| At THIS particular time of the year, when the temperature is near, or BELOW freezing, ANY moisture that is in the air will FREEZE on the carburetor and manifold.
This icing doesn't cause any harm... UNLESS... unless there is moisture in your gasoline. Then IT will freeze, too, and clog up the passages in the carburetor. If you use your tractor in the winter, it's a good idea to put alcohol-type "dry gas" in the gasoline. This is even MORE necessary than using gas-line antifreeze in your car because the gas in your tractor usually sits in a half empty tank a lot longer and is more likely to absorb moisture.|