Carburetor mystery

Today I have tried to start an engine that has been sitting around for i am guessing to be 10-20 years. I have gotten an ignition by putting gas down the spark plug hole and starting the starter motor. When i tried to start it by putting the gas through the carburetor I got nothing, even with the help of initially having gas in the cylinder. I have cleaned out the carb and all of the passages, ect. are clear for gas to flow but the engine won't start. Any ideas how to get it going? Also, will placing a magneto closer to a flywheel produce a stronger electric current for the spark (this is on a different engine)?

 

We need to know more about the engine, who made it, the model numbers etc, they are usually stamped in the metal shroud by the spark plug. Have a good one. Geo

 

it is a Briggs and Stratton 325431-0126. Here is a link that shows a parts diagram but gets a general picture across pretty well:Parts and Diagrams for Briggs and Stratton 325431-0126-99.

 

Since these things are often cobbled when I come across them nowadays, I won't assume what carburetor is on it and will ask. Does it have a carb mounted to the top of a tank, or is the carb separate from the tank?

 

Its mounted on the side of the engine