How do you clean the carburetor on a snow blower?

You can start by taking the float bowl of the carb. and clean the bowl out (you can do this on the machine) if the bowl is not full of solids and move the float up and down look at the pin hooked to the float if it is moving then put it back together and put a good carb cleaner threw the gas tank that might fix your problem.

Or you might just have to put a good carb cleaner threw before you take any thing apart depends on your problem.

Hope this helps.