The Jacobsen YT-18 UT33018 is a lawn tractor produced from 1987 to 1989 as part of the YT Series by Jacobsen, a part of Homelite. It features an 18 hp Briggs & Stratton gasoline engine with air-cooled vertical shaft design, a belt-driven hydrostatic transmission with infinite forward and reverse gears, and two-wheel manual steering. The tractor includes a mid independent PTO with an electric clutch and operates on a 12-volt electrical system with negative ground. It has an open operator station and a fuel tank capacity of 4.5 gallons (17.0 liters).