Kohler or Honda no BS for me. If that's the BS 3000 series single cylinder then there's a good chance the automatic decompression mechanism broke and took out the engine/rod. Just fixed a guy's Craftsman BS that broke the decomp mechanism, luckily he couldn't get it started for the broken piece to do the usual damage. After seeing how frail the decomp mechanism is I would never purchase a BS single.
So did you have a suggestion as to what I can replace the Old B&S with that would bolt right in? Other than another B&S