Oh it'* a briggs... well on to other idea'* then. Actually we'll try this anyways. Take the main jet out of the carb first. Take off the air filter and feel under the float boal of the carb, there'* 1/2 inch bolt. Remove that, being careful not to let the float drop too fast and don't lost the gasket. Take a stiff, skinny piece of wire and clean out the holes that are near the base (bolt head) of the jet. It won't feel like there'* anything there, but there could be. Go through the sides and down through the middle. Re-install, prime (if equipped), and try to start. Oh and BTW have you checked for spark? You could have lost the magneto. Those get weak with age and the heat gets to them.
Gone for good.... Visit www.aurorah.proboards47.com! We have love for bonnevilles!