Another part of the lawn tractor that needs regular replacement is the drive belt. To pull off a DIY job, you should start by adorning safety equipment like mechanic gloves and goggles. Check the instruction manual that came with that particular model to know exactly what you need to do. The procedure of replacing a drive belt on a lawn tractor differs from one model to another – even where the same manufacturer is involved. In most cases, it is an elaborate procedure that requires basic knowledge of engine mechanics.