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Welcome to Iboats, Freeloader!<br /><br /><br />It's exclusively a Canadian Johnson - that's all I can find out. Try over at AOMCI. <br />I understand that they are similair to the Johnson K models, made in the 20's and 30's.<br /> Interesting link.<br /><br />Good luck!
I found an 8 horse OK 55 made in '31 and '32.A 7 horse OK60 made in '32 and an OK75 made in 1935.This one is 8.1 horse.There are also a number of OK engines that were made in Canada after worldwar 2,although I did not see much info about them.
freeloader,<br /><br />I have a 1975 Johnson 9.9 and just recently tried to find parts for it. I found this link, http://www.marineengine.com/manuals/johnson/ that has a lot of serial#/years crossreferenced. I didn't see your OK15, but maybe they might also know if you contact them as they have quite a few other "OK" models listed.<br /><br />Good luck,<br /><br />DD
