The following documentation is the sum total of all the documentation on the Spirit 28 that I have been able to get my hands on. The Yanmar diesel manuals are still available from Yanmar but I had to buy mine through a marina. There is a list of Yanmar_dealers at the Yanmar web site. An interesting note, I live in Austin and the picture on the front of the Spirit 28 Brochure was taken on the lake that I sail on and where Duchess is moored.