D&R Marine has them
Rudy has copies available at D&R Marine, the "manual" isn't much, just a 2-sided 11 x 17 sheet of paper, but it should still be of help! You can call Rudy at D&R Marine (508)644-3001 on weekdays or if you live within driving distance of Assonet, MA you can stop in and visit him just about any Saturday morning. I think he charges about $5.00 for a copy mailed out, less if you pick it up in person.