Where is the combustion air intake on a Ariens model 724 Snow Thrower with a Tecumseh 4 cycle Snow King engine model number OH195SA/OH195SP? It is a 4-cycle overhead valve engine with a horizontal crankshaft.
Reference item 335 in this diagram. Be aware that snow engines don't use an air filter. That have a cover over the carb to introduce heated air from the muffler to help prevent icing.
Parts lookup and repair parts diagrams for outdoor equipment like Toro mowers, Cub Cadet tractors, Husqvarna chainsaws, Echo trimmers, Briggs engines, etc.