... Talking the drop around the carb or the depth for the filter element? Never measured the one for the carb and can't remember the one for the element.
The drop around the carb. Hope this make sense...here goes...If you sit the air cleaner base on a flat surface if carb opening sits higher than the outside of the base it has a drop base. You can measure from the carb opening to the flat surface to determine the drop distance.
