* Different fuel systems: 4-cycle engines are designed to use gasoline only, while 2-cycle engines require a pre-mixed fuel of gasoline and oil.
* Lubrication: 2-cycle engines mix oil directly into the fuel for lubrication, while 4-cycle engines have a separate oil sump. Using a 2-cycle mix in a 4-cycle engine will lead to excessive oil buildup in the engine, causing damage and potential engine failure.
* Engine damage: The wrong fuel mixture can cause:
* Fouled spark plugs: Excess oil in the combustion chamber can foul spark plugs, leading to misfires and poor engine performance.
* Clogged fuel lines and carburetor: Oil can gum up fuel lines and the carburetor, restricting fuel flow.
* Engine damage: Excessive oil in the engine can cause piston rings to stick, leading to damage and potential engine seizure.
Always use the correct fuel and follow the manufacturer's recommendations for your lawnmower engine. Using the wrong fuel can be harmful and expensive to repair.
