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    1986 / 1989 120-140hp OMC ignition differences

    I bought a parts engine that was supposed to be a 1990 140hp. Get it home and the year is 1986. I can't find any resources on the differences/changes between the 1988-1990 and 1985-1986 ignition systems. I want to put my 1989 120hp ignition components (they are all brand new) on a 1986 140hp...
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    1979 Mercury 7.5 Crankcase Vent

    I broke the mounting ear off my original carburetor on my 1979 Mercury 7.5 by being careless. I bought a new (used) carburetor frame off ebay. The new carburetor from ebay is from an older engine but is identical, minus a nipple for what I believe to be the crankcase excess oil drain hose. On...
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