Fitness equipment is expensive. For a gym owner, it's their bread and butter. Fitness is also a craze that isn't going away anytime soon. Especially with obesity rates rising in the United States. Everyone from housewives to the NY Yankees needs to work out. So it's vitally important to maintain your machines. Used fitness equipment needs to stay in good working shape. It keeps clients coming back time and again. Well maintain working equipment also keeps clients safe. Safety becomes an even more important factor with used equipment. So here are eight ways to maintain used fitness equipment.