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    interchangeable parts between 85hp and 135hp v4

    I found a 135 johnson for cheap. Im thinking about getting it for parts for my 85 evinrude. what are the differences between these engines? the 85 is 77 and the 135 looks like early to mid 70s.
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    Timer base test results

    Hey guys I've continued to test my ignition chasing a wot running issue. My results may indicate a failing trigger coil but I wanna run it by someone knowledgeable since it's a super expensive part. Ok so according to cdi the coil should read 10-20 ohms resistance and a trigger signal of .6v+...
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    Evinrude 85hp low fuel pressure

    I've got a fuel pressure issue with my 77 rude. Rebuilt the fuel pump using Sierra parts to correct a full throttle surging issue. I fired it up after that with a gauge installed to check the pressure. Pumping the primer bulb gets me about 12psi on the gauge. With the engine at idle it...
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    Correct fuel pump rebuild kit for 77 85hp Evinrude

    Does anyone know if there is a rebuild kit available for this pump? I can't seem to find one on the Evinrude site. ​​​​​​
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    Link and sync process for 77 85hp Evinrude

    Anyone know the process for a late 70s v4? A used factory manual is $100 so I'd like to avoid that if possible. I downloaded what I thought was a factory manual PDF but it ended up being a generic Haynes type manual.
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    correct tachometer for Evinrude 85hp

    Looking to add a tach to my 77 evinrude 85hp. I can see how to wire it in but im not sure how to choose the right tach. Can an auto tach be made to work? how many pulses does this engine generate per revolution?
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    Starting prop for 85hp Evinrude

    Alright boys I've got a 1977 85hp Evinrude that I'm fixing up to put on my 1968 glassmaster 15ft trihull. The goal is to have good acceleration and general performance. Top speed isn't super important since this boat will be used for fishing. That being said I'd like this combo to do at least...
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    1977 85 Evinrude intermittent spark on right bank

    So I've got a new to me 85 Evinrude that has an intermittent weak spark on the right bank as viewed from the rear of the engine. The other bank has a very strong spark that jumps a 1/2" gap no problem. Any ideas ? I have a home made dva adapter and will try to collect some data after work today.
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    Improving performance of johnson 55hp

    What can i do to gain a few mph and maybe better fuel economy? The obvious answer ive been considering is re-power with a larger engine but my local market hasn't given me any leads. Im considering doing a re-ring, hone, all new gaskets and shave the head some. compression was kinda low at...
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    Causes of power pack failure

    What causes the power pack to go bad on cdi engines ? I believe mine is fried but I don't want the new one to suffer the same fate.
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    1977 Johnson 55hp stalls at idle and won't rev over 1200rpm

    Hello everyone, I'm new to boating this year. I purchased an old trihull and an unknown condition Johnson 55hp 2 cylinder. So far I've replaced the coils, stator, plugs (ngk 2129), fuel pump, rebuilt carbs and changed jets to the size listed in the parts manual. I tried to take this boat out...
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