Hyundai HYM400P 79cc 400mm Petrol Lawnmower The Hyundai HYM400P is low maintenance petrol powered rotary lawnmower. A “no fuss” lawnmower ideally suited for small to medium-sized lawns up to approx. 20m x 20m, the HYM400P has a cutting width of 400mm and is powered by a 79cc 4-stroke OHV petrol engine, delivering impressive cutting power, but also low levels of noise and fuel consumption to minimise disruption and keep running costs to a minimum. There is a single point height adjuster for all 4 wheels. With six cutting heights controlled from a central height adjustment lever ranges from 25mm for a smooth lawn to 75mm for cutting longer grass, the HYM400P puts you in control over the finish of your cut. Weighing just 19kg, this is one of the lightest petrol lawnmowers .