Recent content by ldixon

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    runs bad back down to idle

    1989 Johnson 28hp SPL Outboard Lately i have had some trouble with this motor, I finally have it running past 1/2 throttle. Before it would just jump really bad and not gain any rpms. Today i ran some tests in a test tank before re-checking the timing. i retarded it 4 degrees at wot because i...
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    timing mark

    i have no timing mark on my johnson 28hp spl. there are numbers on the flywheel and mixed in with those numbers is a "T". a boat shop owner said that i have to get piston 1 at tdc then look on the fly wheel and there will be a top dead center mark. he said to make a mark on the motor where ever...
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    Stupid Question but a question never the less

    I have a 1989 Johnson 28hp spl, I do not have a tachometer installed on this boat. i need to do some work to the timing and do a link and sink, my manual will be here tomorrow morning... How can i get a reading of my rpms without a tach. i have a metter that has a clamp to go on a spark plug...
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    carb upgrade

    Hello there, I own a 1989 Johnson 28hp SPL on an Alumacraft MV with side console full deck and live well it is about 16ft. It is rated at 40hp. I have been told that i can put larger on it around a 60hp but would like to be more like 50hp. I was also told by the same person...
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    Johnson 28hp SPL will not run to far past idle PLEASE help

    Hello, I have a 1989 Johnson 28hp SPL Outboard. It idels pretty well and once you put it in gear and roll on the throttle it runs good untill just before half throttle at this point it drops the RPM rapidly, it will not cut off it runs like this untill you roll the throttle back to just below...
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