Just re-did the carb on my 12 horse B&S on the Snapper. Wow, what a difference. This is a 15 year old machine I bought used 3 years ago. It runs like a new mower from the dealer. Hell, I even did the neighbor's lawn, it runs so good. And the little 4-stroke carbs are a lot easier to work on than the 2-stroke carbs like Walbros and Zamas. The only things I replaced were the needle & float, the rest was just clean up. Adjusted the throttle and choke linkages and now even the choke works (I didn't know it WASN'T working before). Somebody oughta pay me for this kind of work...I usually fix my neighbors' stuff for a 12 pack.