Year of Mercury 75hp

[Thunderbirdone]

Can someone help me with the year of this motor?<br />The serial number appears to be ok145721 (could be oa) the model number is 357a111ks<br />There is also this mie ckh-I.O.I RWC<br />w/o s pipe<br />Thank you very much!

 

[achris]

Re: Year of Mercury 75hp

Interesting!<br /><br />The OK145721 came back as, model 357A111KS, but that's a 350 Magnum ski (carb) engine.<br /><br />The OA145721 is a 75hp Merc, but the model number is 7075625, year is 1985 4 cylinder.<br /><br />Hope this clears things up, but I doubt it.<br /><br />Chris.........