Broken lawn mower? Check out these tips to determine what’s wrong with your mower and if it’s a DIY fix or a job for a repair technician. Here are three common riding mower problems and what you should do about them. If the engine doesn’t start, you might need a fresh tank of fuel. If your riding mower is running roughly, it’s likely your carburetor is clogged. If the mower won’t cut grass, check the blade belt for cracks. Visit the Sears Home Services Knowledge Center for more!