620 hp John Deere 9620R Hard at Work November 13, 2015 by farmlifetoday bigtractorpowerFri, November 13, 2015 12:21pmURL:Embed:620 hp John Deere 9620R hard at work in fall tillage with a 9 shank John Deere 915 V-Ripper. http://www.bigtractorpower.com