Recent content by Greecy

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    Lower Unit Pressure Test

    Thank you both for the sound advice. It would not have been wise to put the LU back on with this very small leak. What I did not mention in my original post was that I had flushed the LU with kerosene followed by methyl alcohol to remove any residual water. Overnight, I woke up with the...
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    Lower Unit Pressure Test

    Engine: 2004.SR.Johnson.2-stroke.50HP I have been getting water in the gear lube in my lower unit. I rebuilt this unit two years ago including a new water pump and the leak started gradually then got serious. I removed it and immmediately discovered that the nut around the shift rod was very...
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    2004 Johnson 50 hp (J50PLSRS) Idle Speed

    Results are in. Idle rpm drops to 950 in gear while under way. I retarded it another degree which took it down to 850. There is still a random misfire at idle but it is less frequent. At 850, the misfire is enough to kill the motor now and then. I can live with that but it is annoying. I...
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    2004 Johnson 50 hp (J50PLSRS) Idle Speed

    Understood. Screwing the idle adjustment screw in or out changes the low end timing without impacting the high end timing Changing the length of the linkage arm will change low and high speed timing. I set the high end by pulling off the plug wires, connecting a spark tester to number one...
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    2004 Johnson 50 hp (J50PLSRS) Idle Speed

    Service manual stipulates 1 deg +/- 1 deg ATDC but that is at 800 rpm. I am checking the timing at 1,400 rpm. I re-read the Service Manual and it requires the measurement be made at 800 rpm in forward gear. Maybe 1,400 without a load is about right. Taking it out for a trial on the water...
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    2004 Johnson 50 hp (J50PLSRS) Idle Speed

    After rebuilding the carbs and setting up the linkage and synchronization as per the service manual, the motor idles at 1,400 rpm with the throttle plates fully closed. The idle speed is supposed to be 850 rpm. The low speed timing is 1 deg after TDC. According to the service manual, the...
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