Fender's website has manuals for a wide range of its products, including a number of amplifiers, as of 2015. Users can download these manuals in PDF format.
From the Fender main page, scroll to the bottom, and click on the Support link under the Customer Service heading. From there, click on the Product Manuals link in the Quick Support Links section. Then click Downloads to view a list of product manuals. Find the model of your amplifier, and click the link. Depending on the settings of your Web browser, the manual either displays in your browser or as a download to your hard drive.