Just a word of caution for the racers with Briggs Animal and World Formula engines. As seen in the attached picture is the correct orientation of the carburetor slide V-clip. The purpose of the V clip is to apply pressure to the needle C-clip and hold in position. We are seeing more racers lose this V-clip while inserting or removing the throttle cable from slide. Just a word of caution that when replacing the throttle cable so the V-Clip does not fall out of slide. The adverse effects of the V-Clip positioned incorrectly or missing is the throttle needle will dance up and down and cause a very rich fuel air condition.
In addition, take note that in the World Formula application the V-Clip must set down in a shallow recessed area. The Animal is just positioned at the bottom of the slide bore location.
This tech update applies to all Animal and World Formula applications. Quarter Midgets, Karts, Jr Dragsters, Snow Mobiles, Swamp Boats, etc ...

Steve