Locate the carburetor, which sits about midway up the left side of the Kohler 15 1/2 HP engine.
Notice the eyelet near the top of the carburetor. The governor's rod connects into this eyelet. Pull this rod out of the eyelet with your hands.
Follow the rod back to where its other end connects to the governor. Loosen the bolt at this connection point with counterclockwise twists using a socket wrench. Remove the rod.
Slide the replacement rod into the connection point on the governor. Tighten the bolt back up with your socket wrench using clockwise twists to secure the rod.
Slip the other end of the governor's rod back into the carburetor's eyelet.