The Tecumseh carburetor used in the Mastercraft model 314420515 snowblower is likely the Tecumseh 640084B carburetor. This carburetor is commonly found in Tecumseh snowblower engines and is used in various snowblower models.
A Tecumseh Carburetor could be purchased from a variety of online retailers such as Amazon, eBay and SupaPrice. There are also helpful videos on YouTube showing how to undertake a rebuild of this kind of carburetor.
your float is stuck in the carburetor. Clean it with carb cleaner.
The float valve in the carburetor is not working properly. You will need to remove the carburetor and clean it or replace it.
If it's coming out the overflow pipe, then it's likely to be a sticking float.
That is the main jet needle valve.
There are several reasons there can be a leak. However, you will want to take the carburetor apart for any leak - purchase the carburetor kit and carefully take it apart. Use the rebuild kit to replace gaskets, etc. and when you put it back together, the leak will also be fixed. Do not use gasket sealer on the carburetor.
The float could be stuck open in the carburetor, causing the leak. The carburetor leak needs to be fixed, this could be all of the problems, it also causes a fire hazard.
did u find out yet
Could be,Foreign material (dirt, rust, etc) caught in the needle and seat,Bad float,Float is out of adjustment,
Sounds like u have carburetor problems!
A leak.