There is, by the way, a Tecumseh website that will direct you to the nearest dealer. I just went through my yard equipment also. My local dealer said it was the carburetor before I finished my second sentence. He was right. Fuel stabilizer or not, it was bad gas. I completely disassembled the carb on both my Tecumseh-powered chipper and my Honda generator and cleaned them both out with carb cleaner and new gas. It was really very easy, and reminded me how much fun working on cars used to be! There was a lot of crud in the float bowls of both machines, so I knew I was on the right track. I cleaned the plugs on both machines, put them together and they both started like new.
1995 E320 Wagon Moonstone Grey/Parchment 106K mi.
2007 E63 AMG Graphite/designo 75K mi