Briggs & Stratton 550 Ex Series Poulan Pro 140 cc 5.50 ft.lbss ENGINE on a Yard Machine MTD body. Not self-propelled - instead has extra-large wheels for better maneuverability. Pull-start, starts up easily and runs good. It was serviced not long ago. I moved in with my dad, bringing this, but he already has two mowers. Located in the town of Canandaigua near the middle school.