Logo
Results 1 to 12 of 12
  1. #1
    Join Date
    Mar 2020
    Location
    NE Wisconsin
    Posts
    6

    Default Evinrude 2hp 1978 Help

    Rebuilt a 1978 Evinrude (2802R) couple years ago and can't quite get it going 100%
    Problem is it will not run wide open well, when the carb was rebuilt I did not adjust
    the float because I don't know how, and was wondering if that has something to do with the problem??
    The points are new and set and new plug installed, the high and low needle valves looked good and clear with
    no visible damage that I can see.
    I know it is not running wide open well because I also have a 1982 Johnson 2hp that runs fine that I'm comparing it too.
    Any ideas??

  2. #2
    Join Date
    Sep 2010
    Posts
    19,163

    Default Re: Evinrude 2hp 1978 Help

    The 2 motors are identical.----You did install needles in the correct position ?-------You have to adjust the carburetor needles when motor is working.-------Adjust bottom needle when carburetor is WOT to get the best RPM.----Then put motor to idle and adjust upper ( slow speed ) mixture.

  3. #3
    Join Date
    Mar 2020
    Location
    NE Wisconsin
    Posts
    6

    Default Re: Evinrude 2hp 1978 Help

    Yes ,I have done this out on the water with motor at operating temp, but still seems to lag at WOT, like not quite getting enough fuel,
    that's whey I'm wondering if float would have anything to do with it?

  4. #4
    Join Date
    Sep 2010
    Posts
    19,163

    Default Re: Evinrude 2hp 1978 Help

    My opinion only.-----Floats are rarely the problem.----Did you " rebuild " the motor or just take it apart and put it back together ?

  5. #5
    Join Date
    Nov 2011
    Posts
    2,764

    Default Re: Evinrude 2hp 1978 Help

    You ask a specific question concerning the float level. Let me respond with a specific question for you. When you are under way at full throtle and you feel it is not running right, and you turn the high speed needle to the left, does it slow down? Likewise, if you then turn it to the right, does it regain power and further turniing makes it slow down again? That is a specific question, and if the answer is yes to both, the carb is doing what it is supposed to do, including fill with fuel from the tank, which is controlled by the float valve. Also, if the answer is yes, the correct setting is where it runs the best between the two extremes. Simply put, that is the best you can do, as far as the carb is concerned. A carb is nothing but a glorified bucket of gas that you are sucking fuel from.

    I have never personally compared the two motors you are asking about, so have no opinion on the relative performance of the two.

  6. #6
    Join Date
    Feb 2019
    Location
    Finland
    Posts
    109

    Default Re: Evinrude 2hp 1978 Help

    The float should be level, when you have carburettor upside down in your hands. Old float can be so soaked during years, that it is not doing its work well. Also it is important to be sure that float valve is good condition and not worn. Right float level is very important when talking about engine running. How is about your ignition coil, any cracks on the coil? Coil/ ignition wires?

  7. #7
    Join Date
    Mar 2020
    Location
    NE Wisconsin
    Posts
    6

    Default Re: Evinrude 2hp 1978 Help

    Yes, that is what it does.
    The 2 motors are identical, except for the recoil assembly if I remember correctly.

  8. #8
    Join Date
    Mar 2020
    Location
    NE Wisconsin
    Posts
    6

    Default Re: Evinrude 2hp 1978 Help

    The float that is in it could be original, so 42 years old! I replaced ignition wire also but not coil.
    Thinking about it, I could swap carbs and see if the problem goes away, then that will either tell me its a carb problem or not.
    I use the Johnson on our dingy but the wife says the Evinrude looks better, SO HERE I AM!

  9. #9
    Join Date
    Nov 2011
    Posts
    2,764

    Default Re: Evinrude 2hp 1978 Help

    Not even an issue. You are the boss, but what she says GOES.

  10. #10
    Join Date
    Feb 2019
    Location
    Finland
    Posts
    109

    Default Re: Evinrude 2hp 1978 Help

    Make sure that the gasket between carburettor and intake-manifold is good condition , if not, buy new one and please donīt try run the motor with bad gasket, in will suck too much air and will run lean.

  11. #11
    Join Date
    Mar 2020
    Location
    NE Wisconsin
    Posts
    6

    Default Re: Evinrude 2hp 1978 Help

    Thanks all, I'll go over all this when winter leaves Wisconsin!

  12. #12
    Join Date
    Apr 2010
    Posts
    4,806

    Default Re: Evinrude 2hp 1978 Help

    Where in Wisconsin ?? I'm from Minocqua.

Similar Threads

  1. motor mounting bracket replacing my 1978 evinrude 70 hp with a 1969 evinrude 55hp
    By eddieroy in forum Johnson Evinrude Outboard Forum
    Replies: 1
    Last Post: 09-28-2010, 01:52 PM
  2. 1978 Johnson 70 hp and 1978 70 hp Evinrude are same motor
    By joefixit in forum Johnson Evinrude Outboard Archive
    Replies: 2
    Last Post: 11-20-2009, 09:23 PM
  3. 1978 Evinrude 70
    By hlgs34 in forum Johnson Evinrude Outboard Archive
    Replies: 1
    Last Post: 05-11-2008, 03:41 PM
  4. 1978 75 hp evinrude matching 1975 75 hp evinrude
    By Frank N. Stein in forum Johnson Evinrude Outboard Archive
    Replies: 2
    Last Post: 03-14-2008, 03:36 PM
  5. 1978 Evinrude 115
    By Jim Sandifer in forum Johnson Evinrude Outboard Archive
    Replies: 6
    Last Post: 04-25-2004, 11:30 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •