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    Johnson 70HP Square Impeller Key?

    Hi All,<br /><br />I finally managed to get the corroded impeller off of the driveshaft on my replacement '82 70HP lower unit. Now, I have a new problem - there is no flat side to the shaft, and the impeller key is square. In fact it looks like the key is either permanantly part of the shaft...
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    70HP Impeller Replacement Problem

    Hello All,<br /><br />I'm in the process of replacing my burnt out 1980 Johnson 70HP lower unit with a lower unit that was apparently from a 1982 70HP engine. The 1982's water pump impeller was in awful shape, and I had to cut it off to get it off of the driveshaft. When I did this, I noticed...
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    70 HP Johnson Lower Unit Replacement Shifting Problem

    Hi All,<br /><br />I recently bought a used replacement for my burned out 1980 70 HP Johnson lower unit, and visually everything appears to match up (dimensions, splines, etc.). However, I noticed that on the "new" lower unit, the prop shaft rotates in the opposite direction than on the "old"...
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    1980 Johnson lower unit spline issue

    Hi All,<br /><br />A couple of weeks ago my lower unit gave out. Rather than rebuild it, I thought I would save myself a bundle by just buying a replacement used one, so I took the old one off and went on the hunt for a new(er) one. Lo and behold, I found a working one in good condition for...
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    1980 70hp Johnson Lower Unit Compatibility

    Hi All,<br /><br />The lower unit on my 1980 70hp Johnson mysteriously burned out and locked up last week. Seems that all of the fluid leaked out in a couple of weeks without me even noticing. I managed to get it off the engine, and since then I've been shopping around for a used or...
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