The operations and parts manuals for the FL120 are available on the Grand Banks owners site, http://www.grandbanksowners.com/index.php
in the "Manuals" section. However you may have to be a member to access this section of the forum. Joining is free, however. But if you don't want to join and can tell me what piece of specific information you're looking for I can try to look it up for you. Or you can call Brian or Bob Smith at American Diesel and they can tell you pretty much anything you need to know about the FL120 and supply the parts as well.