To winterize your lawn mower, you first have to drain the old fuel from the gas tank and clean the deck. Check your owner’s manual to see if you need to add new fuel and fuel stabilizer, or not. After that, you can prep the mower for storage by changing the oil, air filter, and spark plugs. It’s time to put your lawn mower into hibernation. So, how do you winterize your mower to ensure it is in top shape for your first spring-season lawn haircut? I’ve researched this subject to save you the trouble and potential repair expenses, so…