John Deere D120 HP, Price, Reviews, Specs, Horsepower, Serial Numbers, Engine Oil Capacity, Attachments, History, Features & Pictures John Deere D120 Price, Reviews, Specs: John Deere D120 Lawn Tractor is equipped with a Briggs & Stratton 33 gasoline 1-cylinder air-cooled, 540 cc engine, which delivers 21 hp (15.7 kW) power. John Deere D120 Lawn Tractor featured with … [Read more...] about John Deere D120 Price, Specs, Reviews & Attachments