Stumbled across this list of on line manuals looking for something else. Link is also in the manual section of the Tech Wiki.
http://www.cruisersforum.com/forums/f55/on-line-shop-manuals-8758.html
Guys : Westerbeke has all of the manuals on line or contact Engine's 1(or any Westerbeke Dealer) and they will send you a copy by Email.