Just inherited the above riding mower from my dearly departed dad with a briggs 875 series engine. Yes, I've seen the bad reviews along with the good. All the tires are flat and I need to order a replacement pin for the deck. I'll get to that, but my biggest gripe is that it won't run on its own (it sat unused for two years). I got it to run steady by sticking a propane torch into the carb with my hands cupped around it, turned up as high as it would go upside down, which pretty much narrows it down to a carb or fuel line problem. I'm gonna clean the carb and maybe rebuild it, but got to thinking-has anyone done a propane conversion on these engines? Which kit did you go with? I go thru enough one pound cylinders around here to justify it-the leftovers would get used in my lantern or stove during the winter.