The Jacobsen 100 53151 is a lawn tractor produced from 1977 to 1980. It features a 10 hp Briggs & Stratton 399cc 1-cylinder gasoline engine with electric start and a 3-speed belt-driven gear transmission with 3 forward and 1 reverse gear. The tractor has a wheelbase of 42 inches, weighs 463 lbs, and uses two-wheel drive with manual steering and mechanical disc brakes. It includes a mid PTO with manual clutch and supports attachments such as a 42" mid-mount mower deck, a 42" front blade, and a 34" front snowblower.