What kills the Tecumseh engines? I have a 2002 Toro 22" Recycler with a 6.5 HP Tecumseh and the thing runs like new. I change the oil twice a year and the spark plug and air filter every year and it runs absolutely perfectly in heavy use, 3-3.5 hours at a time every week. The only ossue at all was this spring I found that a lot of the oil had leaked out underneath during the winter but once I started using it the leaking stopped and it hasn't leaked since. maybe a seal had dried out a bit during the winter and then swelled back up when the engine was run regularly again? Any ideas? Thanks!