It's also important to use fresh gasoline in your lawnmower. Gasoline can deteriorate over time, which can lead to problems such as starting difficulties, engine surging, or reduced performance. It's recommended to use gasoline that is no more than 30 days old.
To prevent potential issues, avoid using gasoline that contains ethanol (E10 or higher) in your lawnmower. Ethanol can attract moisture, which can lead to corrosion and other problems in the fuel system. Instead, opt for gasoline that is free of ethanol.
Remember to always follow the safety guidelines and instructions provided by the lawnmower manufacturer when handling and using gasoline.