On these older boats, manuals were not always provided.
Google searching and a bit of sleuthing can generate most answers. Questions here on the Forum will often generate ideas that lead to solutions. In general all brands follow a typical construction pattern. The bells and whistles are often from various parts builders. There is no rewards for having an "OEM" boat unless your talking about one from the 1800's or early 1900's . This was way before plastic hulls were all the rage and the family man with an average bank account could afford a sailboat.
Here is a review that may shed light on your boat.
Quality construction adds value to the easy sailing S2 8.6.
www.cruisingworld.com
Is there something specific you are researching?
ps... congrats on your boat and welcome to SBO.
Came across a couple more links..
l-36.com
Since 1974, Practical Sailor’s independent testing has taken the guesswork out of boat and gear buying.
www.practical-sailor.com