How to slow the idle speed down on a 1990 cub cadet mower?

To slow the idle speed on a 1990 Cub Cadet mower, locate the carburetor and identify the idle adjustment screw, which is usually marked. Turn the screw counterclockwise to reduce the idle speed. Make small adjustments and check the engine's performance until you achieve the desired idle speed. Always ensure the mower is off before making adjustments for safety.