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    13 pitch or 15 pitch for Mercury 50hp command thrust

    I hit a stump with my 2017 Mercury four stroke command thrust and busted my prop. I used a chart selector and ordered a mercury black max prop to replace it. While installing it yesterday I noticed that it was a 15 pitch. The prop I’m replacing was a 13 pitch. I’ve read the internet until...
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    Power pack questions

    How does one diagnose a power pack problem in a 1981 Evinrude 15 hp? The engine will start cold and run fine but once it gets warmed up it doesn’t want to go wide open throttle and if I shut it off it won’t re-start for 15-20 minutes until it cools down. I’m using fresh fuel, new plugs...
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    Fuel mix for ‘65 Evinrude 3hp

    I have a 1965 Evinrude 3hp Lightwin that I’ve been working on. My question is about the fuel mixture. On the cowling it says 50:1 but during the re-build process I’ve seen many comments recommending higher oil mixtures such as 25:1 and 20:1 and even 16:1. The reason given for the higher oil...
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    1981 15hp Evinrude hard to start--need advice

    I'd like to ask for some help in addressing the problem of a hard-to-start 1981 15hp Evinrude E15RCIS. It takes 4-10 pulls to get it to start and then usually dies in about 1-3 seconds. After another 4-10 pulls it usually starts up and runs fine. In the past year I've replaced the water...
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    Where to put o-ring on water pump

    I have a 1981 Evinrude 15 hp that I replaced the water pump with a kit from Sierra. Everything went well except there is a small o-ring (a little smaller than a dime) that I can't figure out where it goes. Possibly around the shaft somewhere, but where? Thanks
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    evinrude 15hp repair and maintenance questions

    I'm new here and fairly new to boating. I'm pretty sure the water pump went out on my 15hp Evinrude yesterday because it wasn't squirting water out the back, only what looked like steam. It ran 10-15 minutes before I caught it and the engine was really hot. I found a YouTube video that shows...
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