Simplicity Yeoman 637

The Simplicity Yeoman 637 is a 7 hp garden tractor introduced in 1972 as part of the Yeoman Series by Simplicity, a part of Allis Chalmers. It features a Briggs & Stratton 17000 1-cylinder air-cooled gasoline engine with 275 cc displacement. The tractor has a 3-speed belt-driven gear transmission with 3 forward and 1 reverse gears. It is two-wheel drive with manual steering and mechanical band brakes. The Yeoman 637 includes a mid PTO with manual clutch and an open operator station. Dimensions include a 36.5 inch wheelbase, 53.5 inch length, and weights ranging from 268 to 288 pounds depending on starter type. Tires are lawn/turf type with 4.10/3.50x6 front and 16-6.50x8 rear. Attachments available include a 32" mid-mount mower deck, snowblower, and blade. Electrical system is 12 volts with negative ground.