I have a new to me 1978 35 Viking with 3116 Cats. Super solid boat but I know nothing about it as the former owner is deceased. It seems as if all house systems work (lighting, pumps etc). I am looking for any information/diagrams on this model. Specifically fuel related but any others would be welcomed as well. According to the survey, it has 5 fuel tanks and 3 fuel fills. It also mentions that 2 tanks in the rear may be abandoned.. How can i determine this and how can I recommission them? I'm also told that the main U shaped tank under the salon may have a leak, but I cannot see any leaking areas. I have already contacted VIking and while they were very nice, they did not have any useful information to share.
