If you choked it to death several times running, it is pretty well clagged up with soft carbon and will need some care to get it running properly. As Joe said, clean the plug first. Then the mission is to burn out the crud you have filled the combustion chamber with. If the weather is mild (not cold) you might get lucky if you choke it to start, then un-choke it as soon as it starts, hoping to burn the garbage. As soon as it runs, the soft carbon will fly around the combustion chamber and is quite likely to lodge in the spark plug again, shorting it out and stopping the engine. If that happens you have to clean the plug again, and repeat the process. Meanwhile by rich-loading it over and over again, you have washed all the oil off the cylinder walls over and over again, causing them to be somewhat scuffed by the piston rings.
Then write on the workshop wall 100 times: I will not allow any engine to rich-load.
