Re: Water in Oil 1957 Johnson AD-11 7.5HP

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October 12, 2017 at 8:50 pm #66108
jerry-ahrens
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    Here’s another important thing to replace, once you have the powerhead off… #s 1 and 3 in the diagram. One is the cork seal and the other is the O-ring. be sure to reassemble in the correct order. Failure to replace these seals could result in a blown powerhead.. from water ingestion. http://www.marineengine.com/parts/johns … =Gear+Case