Video showing the conversion of a common 3HP vertical shaft lawnmower engine to run in a horizontal configuration.
Horizontal shaft engines are more valuable since they can be used in stuff like go karts, motor bikes, tillers, edgers and cement mixers. Vertical shaft engines are much more common since they appear on nearly every lawn mower. The engine used is a common Briggs n' Scrappin 3 HP with a pulse jet carburetor.

Originally filmed in 2010 Reupload from my old channel (kougsohv9)