Chosen Solution

I have a Murray push mower I changed the spark plug put in the filter sponge and change the oil and even put the stanton gas stuff u help with the fuel its start for a second and then dies I even clean the carburetor I’m stuck dont what else to do . Please help

The next thing to check would be the fuel flow. Check the needle valve. If you would give us the specific model number, we may be able to elaborate.