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    1975 70 HP Johnson - black/yellow wire removed from power pack problems

    I am very new to boat motors. I could not get a spark to the plugs, so I removed the black yellow ground wire (???) from the power pack and the engine fired right up. I had to touch the wire back to the spot to stop the engine. I'm wondering where do I start to try and fix this problem? My...
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    cam and roller adjustment 70's era 70HP??

    I have a 70 HP Johnson motor mid 70's I think. I am less than a novice when it comes to motors. But anyway, I need a little help... The motor idles great but doesn't seem to be opening up all the way. On the water doesn't even plane out of the water. I have attached photos to illustrate what...
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