Open a Web browser and go to Kirby's customer service website.
Send Kirby's customer service an e-mail or phone them to request the particular schematics you need. For example, if you own a Kirby Generation 3 upright cleaner and need its interior parts list and diagram, ask customer service for these specific documents.
Open the e-mail response from Kirby customer service to view your appropriate diagrams; alternatively, open your postal mail if Kirby sends you copies of the diagrams.
Open a Web browser and visit a website that sells Kirby schematic diagrams and parts.
Write down what kind of diagrams and parts are offered by the websites, and choose the ones that best suit your needs.
Purchase the diagrams and/or parts needed.