If your Massey Ferguson 1839 parts manual is damaged or not working correctly, the first step is to contact the manufacturer to see if they offer a replacement or repair service. If not, it’s important to search online for a copy of the manual to download or purchase. You can also check with local dealerships or retailers to see if they carry a copy of the manual. In some cases, used parts retailers may have a copy of the manual. Once you have a copy of the manual, review the instructions to ensure that you can properly install and use the parts.