A '90 is the best Ericson to buy because it is/they are the youngest boats in the fleet.
OTOH 31 years is just old enough so that everything works, but everything needs to be replaced.
Look at the boom sheaves - everyone seems to run into that. The plastic gets old and sunburned and turns into a problem.
Your hull was probably laid up in Tijuana Mexico, as were all other 90's.
Your boat probably has a Yanmar 3GM30F engine in it (only in the '90's, all others were Universals). Yanmar instead of Universal means fewer fellow owners here in EY.org, but the 3GM is very widely used by other yacht manufacturers that the parts and online information support is strong.
PDF downloads are available for owner manuals, and I found a Chilton guide as well. I'm 99% sure that my Yanmar does not have a water lift muffler (Fernando and I both have this situation). It has never been a problem, but good for you to know.
Here's a magazine review about the model:
Ericson's 32-200 learns from its big sisters
www.boats.com
A lot of work went into making the aft cabin double-berth (vs. the slightly older design 32-3's). Every boat is a bundle of compromises.
The rear cabin trapezoidal port window all seem to leak at the aft end. I think there may be a hull-flex or heat-related fiberglass expansion issue. I tried to rebed mine and the problem returned.
No one has produced a 32-200 specific owner manual, so you have to make your best guesses based on the 32-3 model and the 34-2 which was designed and built at the same time and shares virtually all components.
You might find your specific boat in the hull wiki.
Information offered here sometimes on an "owner states" basis, sometimes gleaned from for-sale web sites, sometimes from member profiles. In other words, there are probably errors. Readers should rely on specifics here with due care and 'caveat emptor.' Hull Series 001-024 (???)...
ericsonyachts.org
If not, please add the info.