Reply To: Evinrude Big Twin – Pressure Tank-Converted? Or not?

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May 8, 2025 at 9:22 pm #296273
JACQUES
Participant

    yes the engine now runs on a single line tanks  versus  the old style 2 hose tank …… thanks to the pressure pump mounted on the bypass cover.    Purists do not convert them but they work fine with a modern vented  tank.

    to service your oldy  get this cheapest best book for 20$    just download and print locally it is a johnson book but Evinrude & Johnson are cousins anyway.

    https://watercraftmanuals.com/outboard/johnson/manuals/johnson-302231.htm

    change the impeller if age unknown,   run it at 25/1 oil  fuel ration  with tcw3

    check compression  before investing  to much $$$

    Maintaining Johnson/Evinrude 35/40hp outboards> <meta http-equiv=”contents” content=”outboard motor repair, johnson outboard, evinrude E-Tec, OMC, outboard motor repair, <style type=”text/css”> <!DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN”

    Big Twins

     

    Joining AOMCI has priviledges 🙂

    1 user thanked author for this post.
    Motomanmatt