Timing marks located in the engine, Briggs & Straton?

I took apart Briggs & Straton lawn mower Model 10T802- Type 0547-B2, Code 08042254(5.5) HP Enigine to replace the Crank Shaft that is bent. I notice that there are some timing marks located on the gears which is part of the crankshatf and Camshaft! What marks do I line up to make sure that the "Fire Sequence is right". PS I still trying to find a new Crankshaft or an old one, But still need to understand how to line all the marks up right before I replace the lower husing. Any help in this matter!! Or a diagram will work too.