This Honda 4-stroke lawn mower is a state-of-the-art technology that combines high performance 4-stroke engines with low fuel consumption and low noise. The Honda 4-cycle engine has a much cleaner exhaust than mixed gasoline, so it completely cleared strict exhaust regulations in the United States, Europe, and Japan. Uses gasoline for fuel, so it has excellent startability. There is no need to worry about mixing fuel, and almost no white smoke, odor, or dripping out of the exhaust. Since the spark plug is less dirty, there is no failure such as ignition mistakes. The mini 4-cycle engine is a step above the rest.