Machine description: 1981 John Deere 4840 tractorHours: 1,712 on meterSerial: 4840P011789REngineJohn DeereCylinders: 6Fuel type: DieselTransmissionPowershift8F - 4ROperators stationHeatFeaturesPTO: 1000Three pointTop link... more info about the 1981 John Deere 4840.