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I have a 1975 johnson 70hrs it runs but when i open up the throtle and go fast it acts like its going to lock up and it kills the motor and turn over hard so i turn the fly wheel and it loosens up and runs and dose that repeatedly what would be the problem?

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Sounds like fuel mix isn't right . not enough oil to keep the bearings free or it's overheating .you have a serious problem

Posted on Apr 26, 2010


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