What does "zero turn" mean? That the mower’s turning radius is essentially zero because it can spin around completely on the same spot. How does a zero turn mower work? The magic is in the motors: the pivot point is directly between the large rear wheels, and each rear wheel has its own wheel engine, controlled by its own lever. When you push one lever all the way forward and the other one all the way backward, the tires will rotate in opposite directions, and the little front wheels will spin in a perfect circle around the pivot point. Try it out for yourself with one of the numerous zero turn mowers found on eBay.