This depends on your individual needs. If you are familiar with working on Massey Ferguson tractors, then a Massey Ferguson Parts Manual may be a useful tool for you. It will provide you detailed instructions on how to replace and repair parts, as well as provide general information about specific components. Having the manual can make repairs and replacements easier, as it provides an up-to-date list of parts necessary to keep your tractor in top shape. Alternatively, if you are not familiar with the brand, it may be more cost effective to hire a professional to do any necessary repairs and replacements.