The fuel leakage isn't something that is Honda related.

I believe you find the problem with the Honda engines is the soft seating of the needle as it doesn't always seat completely but the Briggs will also flood the crankcase at times due seating problems too. Even Kohler Courage engine with Walbro carbs here do it when the needle seat is worn (actual fuel etched). Kohler had to make available a repair kit just for replacing the needle seat because customers and techs were raising so many complaints about having to replace a $150 carburetor (now about $125) when only the needle seat was needing replacing.

These are the engines that I primarily work on. I just haven't seen any Kawasaki mower engines doing this but you will probably just about every motorcycle, ATV and UTV have fuel shut off valves installed or at least every one that I have worked on does.

Last edited by AVB; 26/01/17 10:21 AM.