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.
That is the main jet needle valve.
did u find out yet
To rebuild a Tecumseh float type carburetor, start by disassembling the carburetor and cleaning all components with carburetor cleaner to remove any dirt or deposits. Replace any worn or damaged parts, such as the gasket, float, needle valve, and seat. Reassemble the carburetor, ensuring all connections are tight and correct, then adjust the float height according to the manufacturer's specifications. Finally, reinstall the carburetor and check for any leaks before testing the engine.
The Tecumseh OHH60 engine typically uses a Tecumseh carburetor model 632347 or a compatible replacement. It's crucial to check the specific engine model and serial number to ensure the correct fit, as variations may exist. Always consult the engine's manual or a trusted parts supplier for precise compatibility.
To replace the float needle and seat on a Tecumseh carburetor, first, remove the carburetor from the engine and disassemble it by taking off the float chamber. Carefully detach the float by removing the pin that holds it in place, then take out the old needle and seat. Install the new seat by pressing it into the carburetor body, then attach the new needle to the float and reassemble the carburetor, ensuring all components are properly aligned and secured before reinstalling it on the engine.
One can find parts for a Tecumseh engine from Outdoor Distributor, Jacks Small Engine or Super X Power. One can also purchase it from online sites like eBay or Amazon.
More than likely, the fuel bowl float is stuck in the open position.
Sounds like u have carburetor problems!
Purchase a rebuild kit. Take the carb off the engine. Disassemble the carb. Clean the parts with carb cleaner. Reassemble and install then adjust carb (if applicable) while running the engine.
When you purchase a carburetor kit it comes with a full diagram.
Sounds like the fuel inlet valve is stuck shut, or the float isn't working properly.