What are things do do to a large lawn mower if putting it up for the winter?
If it has a plastic fuel tank, drain the tank and run the engine until the carburetor is empty. Use this fuel in another engine like a snow blower or a motor vehicle. If it has a metal fuel tank, fill the tank full. Add the recommended amount of fuel stabilizer like Sta-Bil. Run the engine for several minutes to allow the fuel stabilizer to get into the carburetor(s). An empty metal tank can rust. Also, with a full fuel tank you will get less condensation. Change the oil and filter. Contaminants in the old oil can deteriorate bearings, gaskets, and seals. You also won’t need to change the oil in the spring. Remove the spark plug(s). Add about an ounce of oil to each cylinder. Turn the engine over once. This will add additional lubrication to the cylinder walls and piston rings. less chance of the engine seizing up if stored for an excessively long time. Remove and clean the battery. Store it in a warm, dry place. Put the battery on a 2 amp automatic charger for a hour or so once a mont