RE: OS 90 FS timing
southlaketxflyer,
You should be very happy with purchase; a new-in-box OS FS-90 for around $160 is very good.
Most of these engines go for a lot more, I´ve seen a couple (also nib) that went for $250 or more on the bay very recently.
There´s a world of difference between new-in-box and used.
I´ve been bitten several times by used engines that I got off the bay at "bargain" prices.
There are many descriptions; "little used" - "hardly used" - "hardly run-in" - "like new" - "not sure if this engine has run", etc., etc.
It all means essentially nothing - what you get can be anything from like new to "in dire need of extensive and costly repairs".
Yes - the FS-90 is out of production, but there are still quite a few in circulation, and you can still find spare parts without too much problem if you look around a bit.
You have a top quality engine with wonderful handling characteristics and ample power for most applications.
Yours is NEW in the box, with all accessories. It should last a long time if you take care of it.
It´s a bargain - enjoy it!
Tomas H.