So it backfires, then blows mixture, or liquid fuel out the carb intake?
I wonder if you have a fuel pump/carb problem? I'm not an expert on kohlers, does the 241 have a fuel pump like my 301? If the carb isn't set up right, such that the pump is pushing fuel past the needle valve, that could causing flooding, and also lead to fuel dripping back out the carb once it stops running.