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It started then was vibrating I sped It up then It acted like It was going to stall so I slowed It down then It just shut off and wont start back.

Maybe you could post Model# serial# of engine? Have you done anything like check spark plug for spark, air filter, fuel filter,etc?

If it was vibrating, did you hit something? First thing I would check is a sheared flywheel key.

I figured It out the push rod got loose and was not making contact with the valve.