A lawn mower, especially a riding lawn mower, is an investment so maintaining it is a wise decision. Properly prepare it for storage so it is ready to run in the spring.
Remove the Battery. Remove the battery and store it in a cool, dry place — away from gas cans, the water heater or furnace. Disconnect the battery cable, starting with the negative cable. Remove the battery and wipe it off with a cloth. Clean the battery terminal using a metal brush or a battery cleaner product.
Clean your mower. Brush or hose off leaves, grass and mud from your mower. Always remove the spark plug lead wire from the plug before doing this and tape or tie it out of the way. If debris is caught on the blade, use a stick or tool to remove it - never use your hands.
Use a Fuel Stabilizer. You shouldn't store your lawn equipment with a partially full fuel tank. Either run the equipment out of fuel, or use fuel stabilizer in a full tank of fuel. Add the stabilizer according to package directions. Then run the mower for a few minutes so that the stabilizer circulates through the carburetor. The stabilizer keeps fuel fresh for up to 6 months. Turn off the engine and completely fill the gas tank. A full tank helps prevent moisture from condensing in the tank which can form rust that could break away and clog the carburetor.
Store your Mower in a Dry Place. Store your mower in a dry, protected place such as your garage or a garden shed. Never store it next to a furnace, water heater or appliance with a pilot light.