Outdoor Power Equipment and Small Engines - Small engine specs.

I'm wondering if any of the folks here would know where I can get the specifications for various small engines. I've gotten some great information from the Mfg's websites but they do not offer (at least I can't find it) the bearing journal tollerances, piston clearances, valve lash requirements, etc.

My Chilton's Small Engine Manual is good but does not tell me all that I need. Factory publications are very expensive - I was hoping to find some relyable info. on-line.

Thanks, Boogity (Southern Ohio)

Since you live in S. Ohio, you should go to the
lawn and garden expo in Louisville next month,
you can pick up a lot of info there. If not let
me know, I can send you the specs you need.
Fish