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1971 Johnson Timing

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  • 1971 Johnson Timing

    I have a 50HP 50sel71s outboard.
    Hi all, I just bought this boat late last spring and it was sitting for some time. Over the winter I had the lower unit re-sealed and the carbs disassembled and cleaned, compression is 140psi on both cylinders.
    O.K. my timing situation, the idle stop screw is cranked almost all the way in - it just didn't look right. I checked the timing pointer with the #1 cyl. at TDC and they line up fine. With the idle sitting against it's stop, the timing is something like 10 degrees after TDC. My manual calls for 3 degrees before TDC at idle. I've post a couple of pics with the engine set at 3 degrees.
    I'm scratching my head - any ideas?
    I tried iboats but no help yet
    Attached Files
    Last edited by KayKatz; 05-01-2013, 08:58 PM. Reason: add pics

  • #2
    10 ATDC sounds right.
    Regards
    Boats.net
    Johnson Outboard Parts

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