The Toro single-stage snowblowers have been very reliable. They have used Tecumseh, Suzuki, and Briggs 2-strokes over the years and all have performed well. Repairs usually consist of a new spark plug annually and a new drive belt every few years. The new Powerclear line of single-stage blowers use Briggs 2-strokes for 3 models and a 4-cycle OHV motor in the high end model. The 4-cycle motor looks to be a new design, and I'd suspect it was from China. This is not meant as a knock on Chinese motors, but parts availablity has been an issue in the past. Toro isn't the only one to go with Chinese motors, the new Husky snowblowers have gone that way.