At A Glance: 20 HP St. Mary's

Content Tools

• Built by: St. Mary's Machine Co., St. Mary's, Ohio

• Serial no.: 3704

• Year manufactured: Circa 1913

• Type: Tank-cooled, four-stroke horizontal sideshaft

• Horsepower: 20 at ˜200 rpm

• Bore and stroke: 8-1/2-by-16 inches

• Ignition: Battery and igniter

• Flywheels: 52 inches in diameter, 4 inches wide