Video answer: Lawn mower repair
Top best answers to the question «What happens if you put bad gas in a lawn mower»
Putting old gasoline into your lawn mower can cause a variety of problems. As the gasoline's volatility degrades over time, your mower may not run as smoothly and in some cases may sputter or die during operation. This can be made worse if water that condensed in your gas can ends up in the fuel tank as well.
Video answer: Repair of briggs lawnmower with bad fuel