Mar 20, 2018 / Replace Rhino SE6 rotary cutter, gear box or buy a new cutter? #11 ovrszd Epic Contributor Joined May 27, 2006 Messages 32,246 Location Missouri Tractor Kubota M9540, Ford 3910FWD, Ford 555A, JD2210 Certainly worth replacing the gear box. Keep us posted on your progress. Welcome to TBN!!!!