Wanting to buy.

[DesertFox6]

Your list of items isn't exactly an indictment against the engine, Super Trooper, but appears to be a list of items which may or may not apply to any given engine. When Service Bulletins (SBs) are issued they usually come with engine or part serial numbers depending on what's affected. There are several types of "bulletins" that may be issued ranging from FAA Airworthiness Directives (ADs) to Mandatory Alert Service Bulletins (we just had one of those come out concerning crankshafts) and run-of-the-mil service bulletins telling us to look for something or other...just in case. If it doesn't apply to our engine we just "file it away."

A notice allowing an increase in time between overhauls (increase of TBO), for example, isn't anything we have to comply with, rather to take note of and sit back with a tall cool one and rejoice that the manufacturer just told us we don't have to tear our engines apart for another XXX hours! Many other items are "heads-up" alerts to check your own engine for such-and-such because evidence of a possible problem has popped up somewhere in the Rotax world and owners are being advised. The older service bulletins from now-defunct Skystar I can't speak to without reading them.

Without knowing the serial number of the 912 in question or having the engine logbook in front of me, I can't guess at what may be pertinent to that particular engine. You can log into the Rotax company website at Rotax-Owner.com [info@rotax-owner.com] and get a fair-sized education about these engines, their history, maintenance updates and watch instructional videos on care and feeding of same.

Please don't shy away from that engine based on incomplete or inaccurate information; hopefully, your EAA friend can help you with this point or perhaps someone else on this forum who lives near you.
(How 'bout it guys? Can anyone give him a hand here? After the noise from the holidays subsides below a dull roar maybe??)

A bit more information on the 912 is necessary here, so I wouldn't start warming up to that "Franklin stove" quite yet just because it's close by!

Hang in there...remember the old "haste/waste adage!

"E.T."