Chances are your mower has been sitting dormant in a garage for three, four, maybe even five months. It’s time to get that thing out and show it some love. There are a few things you’ll need to do. First, change the oil, air filter and spark plug. This is basic yearly maintainence that will keep your machine running smoothly for years longer than it would if you neglected it. If you don’t care to attempt these upgrades yourself, a mower repair shop or sales facility will take care of it for you in exchange for a bit of money.