Thank you for your question.
I am sorry you are having a problem with the snow blower. By what you have stated the engine is not running and leaking fuel. I suspect the carburetor is gummed up and should be cleaned or replaced. If the carburetor leaking the float, needle, and seat are not stopping the flow of fuel into the float bowl. I have provided you with an image below showing the break down of the carburetor. Remove the float bowl and float. Then flush the passages with carb cleaner and compressed air.
Then reassemble and test the operation. I have found a video that should help explain what needs to be done. please click on this link to watch the
Here is a link to order any parts you need.
Sears Parts Direct
If you do not feel confident repairing this problem yourself, then you can have it repaired at your home by a Sears technician. Here is a link for the website:
Sears Home Services
Thank you for using Manage my life.