Never reverse the tractor when the harrow is engaged in the soil. To get good results, a disc should be replaced when its diameter is reduced by 5" (125mm) from its original size
Musayendetse mobwelera mbuyo pamene khasu liri mdothi. Pofuna kupeza zotsatira zabwino, khasu libwezerestedwe pamene lachepa ndi 5 inches poyelereka ndi kukula kwake pachiyambi