This is a different motor but I assume the bolt patterns are the same. I think I will have to draw it up to scale and see if there is any way this can be a Briggs pattern, be it ride on or push motor

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s-l1600 (1).jpg (222.86 KB, 54 downloads)
s-l1600 (3).jpg (237 KB, 54 downloads)
s-l1600.jpg (231.43 KB, 54 downloads)