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Hello, my name is***** will assist you.
The issue that you are having is inside the carb. when it is bogging after the engine is hot, you are lean on fuel. when you turn off the hot engine, and fuel that is coming from the carb is being flashed off in the cylinders, this is what is causing the dieseling. you are going to need to remove and clean the carb. Making sure to reset the float height and the mixing screw to the proper settings.
The engine shutting off, would be from vapor lock. This could be a weak pump or the engine compartment is getting too hot when running. If the cooling system has not been serviced this year, you should do so.
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