What model briggs is this?

[OzFab]

I measured it today and it was around 47.61mm (1.8735 inches)
So its probably small than 5hp

By my calculations, that gives you a capacity of around 185cc; IIRC a 5hp B&S is around 200cc so, probably 3-4hp

 

[rmm727]

5hp flathead Briggs is 206cc

 

[CoroTheCat]

By my calculations, that gives you a capacity of around 185cc; IIRC a 5hp B&S is around 200cc so, probably 3-4hp

I will try and see if I can find the manual for a 4 horse

 

[CoroTheCat]

By my calculations, that gives you a capacity of around 185cc; IIRC a 5hp B&S is around 200cc so, probably 3-4hp

A 4 horse is 187cc, so i guess that's what it is.

 

[zbuck]

That engine is a 4HP, stock bore size 2.781, 11 c.i.. Its either out of a tiller/snowblower, with the extended cam shaft being use as reverse.