I traced the problem to a single chintzy rivet that had been sheared off during the factory's assembly of the mower. No matter, I had two choices: return the mower or repair the mower. I chose to repair the mower. Aside from wasting gasoline to return it, I just couldn't bear the thought of another manmade product being cast into some landfill somewhere. So, into the repair shop I pushed my next bastard product.