Are you looking for the "owners manual"? Or the Day Sailer Association Class Handbook? The DSA Class Handbook is mostly available on their website,
www.daysailer.org
The DSA provides acopy of this to all members, but since they have not updated since before I joined, I have not received my copy yet.
If what you want is the Owners Manual, then I have one and am willing to make a photocopy of it for you. The rigging of the mainsheet and jibsheets changed in about 1975 and this is what is shown in the manual. Your boat was built before 1973, I base this on the fact that you list a Hull# and a Class#, O'Day used that method to I.D. their boats before the Hull Identification Number system was required by the USCG starting in Nov. 1972 (1973 model year). Anyway, if the manual is what you want, send me your mailing address and I will send you one along with a sketch of the earlier mainsheet and jibsheet rigging setup. In the meantime, take a look at the photos of various Day Sailers posted on this Day Sailer Home Page.
Rod Johnson (rjohnson24-at-juno.com)