Recent content by nautme

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    '71 Johnson 3 cyl. 60 hp won't turn over

    Last fall on my last outing, the motor overheated, apparently from impeller failure. Two wires were in contact with the head and the insulation melted and the motor died. These two wires come from something (I think a thermal switch as best as I can tell from the wiring diagram) in the head next...
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    Lower unit question

    Will a late '60/early '70 50hp lower unit fit on a 1970 60hp? Both Johnson hydroelectric shift. Don't know the exact year of the 50hp.
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    Prop Question

    I recently bought a 20' aluminum pontoon with a bad motor. I took the motor (1970 60hp johnson) off my old dilapidated 16' trihull and put on the pontoon. The motor now does not seem to reach full RPM @ WOT. The pontoon has a tach, but I don't know how to hook it up (the old boat didn't have...
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    How fast should it go?

    20' pontoon (aluminum) with '70 model 60hp Johnson. I took the motor off my old 16' tri-hull that was about gone, but the motor runs really well, and put it on the pontoon. The speedometer on the 16' foot didn't work, but it scooted over the water pretty good, I'm guessing 30-35 mph or so, and...
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    1970 60hp Johnson

    Last weekend I took the boat out and tooled around the lake for a while. We pulled into the marina for lunch, and when we returned the motor wouldn't go into reverse. It had been working fine until then. Tonight, I pulled off the cowlimg to run the voltage and ohms test I found in another thread...
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    Johnson 50 very low compression on lower cyl.

    Hi folks, I'm new to boating, more or less, but stumbled on to your site. Last week I bought a used 20' Lowe pontoon with a 50 hp Johnson on it. The guy I bought it from hooked up some muffs and it started and Idled good, so I paid him. When I took it to the lake, as soon as I put it in...
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