A two-sided go/no-go gauge for checking your Briggs LO206 carburetor slide position before you're on the grid. One side is the "Go" gauge — it should slide in unobstructed up to the maximum opening the rules allow. The other side is the "No Go" gauge — it should be obstructed and not fit through, confirming your slide isn't open past the legal limit. Remove the air filter, pull the throttle to full, and insert the tool into the carb's air filter opening to check both sides. Once your slide is dialed in, lock it down with the cap so it holds through the race.
Color-coded by class: Red (Cadet), Green (Sportsman), Blue (Jr Lite/Light), Yellow/Gold (Junior).
