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acres attachment axle beans bearings bedder belt pulley big-capacity bottoms built bushels capacity chilled iron clean clutch corn costs crank crankshaft crop cubic cultivating Cylinder Sheller Diameter Disk Harrow Disk Plows drawbar drive easy efficient elevator ensilage equipment extra farm farmer feet field frame front furnished gangs gears handle harvesting heat-treated heavy heavy-duty hitch hopper horses inches insure John Deere Combines John Deere dealer John Deere Model John Deere plows John Deere Power John Deere Tractor John Deere-Van Brunt lever lister Loader low-cost fuels lubrication machine Magneto Model A Tractor moldboard operation Orchard Tractor outfit picker planter planting pounds power lift power take-off pull pulley Purpose Tractors Rake rear wheels Rod Weeder roller bearings rows saving seed bed shaft shelling soil speed STEEL PLOW strength sturdy teeth tivating Tractor Plows tread truck two-cylinder engine design Two-Row universal joint weight width windrows Yes Yes