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  1. K

    70's Mercury 20 hp Lower unit issues

    Bought what I think is a 1973 Mercury 20hp outboard. Put it in the water for the first time, and it started up great. Shifted into reverse and forward just fine, although forward and reverse are backward because the lower unit was replaced at some point. Anyways, it would idle fine, start fine...
  2. K

    1973 Mercury 20hp shifting problem

    Recently purchased this motor after a running demo with water to a muff. Ran great, shifted great, but needed a new impeller. Brought it home. With the transmission in neutral, removed the lower unit to replace the impeller. After reassembly, it was in nuetral, but would not shift into forward...
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