New Tractor and Chisel Plowing – John Deere 4640 May 4, 2014 by farmlifetoday How Farms WorkSun, May 4, 2014 6:07pmURL:Embed:We take out our new 4640 and hook it up to our 9 shank Case chisel plow to kick the year off. Subscribe to How Farms Work ► http://bit.ly/XYVvDd Facebook ► http://on.fb.me/YpS8oH