The gushing exhaust from lawn mowing equipment currently contributes to a staggering 30 percent of overall U.S. vehicle pollution! By the year 2001, emissions from residential lawn mowers and tractors will have been reduced by 40 percent due to an agreement between the EPA and manufacturers. While an excellent step in the right direction, manual mowers reduce emissions by a perfect 100 percent.
If the blades are kept properly sharpened and the machine is well oiled (jojoba oil works beautifully), manual mowers work well. Even if you have to push a little harder here and there, they cut down on noise pollution, save money, and completely eliminate hydrocarbon and nitrogen oxide. Not a bad trade-off.