The Wheel Horse 518-H is a garden tractor from the 500 Series produced between 1988 and 1989. It features an 18 hp Onan P218G 781cc 2-cylinder air-cooled gasoline engine, a belt-driven Eaton 700 hydrostatic transmission with infinite forward and reverse speeds, and two-wheel drive with manual steering and mechanical band brakes. The tractor has an open operator station and a mid independent PTO with mechanical clutch. Dimensions include a 45.5 inch wheelbase, 65 inch length, 38 inch width, and 41.6 inch height. Tires are sized 16x6.50-8 front and 23x9.50-12 rear. Electrical system is 12 volts with 20 amp charging and 200 CCA battery. Attachments available include 36", 42", and 48" mid-mount mower decks, a 48" front-mount blade, and a 42" front-mount snowblower. The 518-H was built in South Bend, Indiana, USA by Wheel Horse, a part of Toro.