Briggs 20hp Oil Leak

utilityguy

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I recently purchased a lawnmower with a 20hp Briggs. Unfortunately, I didn't know it was leaking oil.
I'm trying to determine where it might be leaking from. I assume that it's either from the cylinder, the crankcase or the head.
If anyone could point me in the right direction from these pictures, I would appreciate it very much.

The engine is: 407777-0119-E3
 

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Rivets

Lawn Royalty
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From those pictures I’m betting cylinder head gasket.
 

Tinkerer200

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It is fairly common for this engine to have a cylinder head gasket leak but not to the outside, inside to the push rod gallery. It is common for it to have a sump gasket leak to the outside under the right cylinder head as you are facing the cylinder heads.

Walt Conner
 
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