When it comes to do-it-yourself home improvement, few projects strike fear in the hearts of homeowners quite like toilets. It just seems like so many things could go terribly, horribly wrong, doesn’t it? No one likes the thought of making a mistake that involves sewage.Fortunately, replacing a toilet is a much less complex task than most homeowners realize. If you have the right materials and a tiny bit of know-how, the chances of a major disaster are slim. Here’s a step-by-step guide to replacing a toilet.