I have an earthquake tiller model 5020 with a 5hp briggs and stratton motor that I need to replace but I can not find the model of the motor. Does anyone know which motor replaces that motor or do you know the model number of the motor that was used on that tiller?

Look around on the blower housing (where the pull rope is located, that is the blower housing), it could be kind of at the bottom side of the housing. Also, check on the valve cover.

Briggs likes to stamp their model numbers in the blower housing. Very difficult to spot. It's a series of numbers.

The swinking motor is same effict it rotate ac/dc