Lawnmowers sputter and die out when they don't have the right mixture of air, fuel and spark to maintain optimal performance. Once this happens, restarting the lawnmower is often a difficult undertaking.Continue Reading
Moisture in any lawnmower tank or fuel line can cause sputtering. Once water has entered into the cylinder of a lawnmower, it keeps the gasoline from igniting properly. There are many things that can cause water to get into the tank or fuel line of a lawnmower, but the two most common causes are a loose gas cap or condensation forming inside the lawnmower. The best way to fix this problem is to completely drain the fuel tank and put in fresh gasoline. The gasoline removed from the lawnmower has to be disposed of properly.
A bad spark plug is another issue that causes lawnmowers to sputter. A lawnmower that has a bad spark plug is usually difficult to start, and once it is started, it runs poorly. Sometimes spark plugs can be cleaned with a wire brush instead of being replaced. If the owner chooses to clean the spark plug, the gap in the spark plug needs to be reset to manufacturer’s specifications to ensure proper functionality.Learn more about Tools
A spark plug is a device that produces an electrical spark, which ignites the mixture of fuel and air in the engine's combustion chambers. A spark plug initiates the combustion in the internal combustion engine.Full Answer >
Fresh fuel is a key to quick starting of a Toro lawn mower, according to the company's website. As gasoline sits in the fuel tank, the more volatile compounds tend to evaporate. Emptying the tank and refilling with fresh gasoline often solves the problem of a mower that does not start. At the end of the mowing season, any remaining fuel should be emptied from the tank.Full Answer >
Diagrams of a lawn mower's fuel system can be found at various websites, such as Honda Lawn Parts, Sears Parts Direct, andBriggs and Stratton. Depending on the brand, the diagrams may not be found on all websites.Full Answer >
To fix a lawn mower that is stalling during use, check the spark plug wire, replace the spark plug and clean the air screen and air filter. Drain and replace the fuel to ensure a contaminate is not causing the machine to stall, and then clean the blades thoroughly before using the lawn mower.Full Answer >