As far as I can read it from the picture, that is a model 130902, type 0424-01, code 75102006. If that is right, here is the Illustrated Parts List:
http://bsintek.basco.com/BriggsDocumentDisplay/Z6kpuBVJ1DajI.pdf
Here is the Operator's Manual:
http://bsintek.basco.com/BriggsDocumentDisplay/msotJO-K_ny7tH217FzoPu.pdf

It was made on 20 October, 1975 in the Murray, Kentucky engine plant.