Why do some Tecumseh engines have the intake and exhaust switched around?

[YT125]

Hi, I wondering why some Tecumseh engines have the intake and exhaust switched around? Thanks

 

[reynoldston]

Hi, I wondering why some Tecumseh engines have the intake and exhaust switched around? Thanks

I guess I never notice. Just what are you talking about? valves? carburetor & muffler?

 

[YT125]

Yes, say with a vertical shaft some have the intake on top end exhaust on the bottom like a Briggs and some have the intake on the bottom and exhaust on the top

 

[bertsmobile1]

It would depend upon which way the fan blows.
You put the hottest bit into the air stread first to get maximum coolling.