My push mower has a gasoline engine to turn the blade, it's just not self-propelled, so I still have to push it manually. What you're referring to (I think) is a reel mower (for REAL men...lol), no motor at all and the wheels turn the blades. I have one of these, a small Scott I bought for the little golf putting area in my backyard (that is now in disarray). But it's not heavy-duty enough to cut allot of yard, like those old-timey reel mowers.
