Starts, surges and dies
Ok. I have a 5hp Briggs & Stratton on my MTD rototiller. I've changed the carb gasket, see picture. I've cleaned out the passages. I've used sea foam in the fuel, it's got fairly new gas. I cleaned and checked the gap in the spark plug and it's good. I can still see through the air filter.
But I can start it and it'll run for a few minutes then die. After the sea foam trick if I babied it I was able to do a little bit of rototilling, but then it died and wouldn't restart no matter where I positioned the choke lever.
What else could it be?