1950 Evinrude Fleetwin 7.5 hp

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  • March 12, 2016 at 2:29 am #3816
    PugetSoundBoater
    Participant

      I just got one of these that seems in real good shape. Model 4434. Checked the lower unit ..has brown grease in it, refill with Lubriplate as best I can,by pumping in the top fill hole to expel current grease out the bottom drain hole ?
      Also spark plugs are missing. What do I need? Gonna set it with the plug holes facing up and put a bit of oil and omc engine tuner to lube cylinders before attempting to start.
      Wondering if you someone has a PDF file or can post a copy of parts diagrams ,specifications ,whatver availiable etc.thanks, Jim

      "Some people want to know how a watch works, others just want to know what time it is"
      Robbie Robertson

      March 12, 2016 at 3:03 am #33264
      frankr
      Participant

        US Member

        It is supposed to be filled with 90 weight oil, not grease. It’s probably leaking, so somebody pumped it full of grease.
        http://www.knology.net/~tombeam/originalliterature.html

        March 13, 2016 at 3:51 am #33348
        PugetSoundBoater
        Participant

          Frank -thanks for the PDF. After removing the 2 lower unit plugs and discovered the grease,no water ran out and the grease didn’t look water contaminated. I’m gonna try deluting the grease with thin oil and run it and drain- refill- repeat. Don’t want to dissaemble the lower unit if I don’t have to. Good idea?
          Missing the spark plugs,what # to use? Thanks, jim

          "Some people want to know how a watch works, others just want to know what time it is"
          Robbie Robertson

          March 13, 2016 at 5:10 am #33351
          Goman
          Participant

            I’ve added a couple of washers pertaining to the clutch rod to keep water out of the gear casing. Haven’t tried it yet… Should work?

            March 13, 2016 at 1:35 pm #33360
            oltimer
            Participant

              I have 2 of these very fast engines, and both I went through completely. You do need a new seal for the bottom end were the clutch rod goes through to keep water out. I have seen as many others on here that worked on them, with rusted out and broken bottom clutch spring.

              March 13, 2016 at 2:30 pm #33363
              crosbyman
              Participant

                Canada Member - 2 Years

                Actually… I am no expert but I have taken apart the LU on my 5.5hp to change the shaft seal only. just keep the part layout in your head .
                you will be able to clear all the grease and refill. should it leak again either change the oil mid summer & pre-winter or take it apart again and change all the seals

                Joining AOMCI has priviledges 🙂

                March 13, 2016 at 8:28 pm #33384
                jeff-register
                Participant

                  US Member - 2 Years

                  Guys,
                  Something that is 60 or so years old needs a complete tear down to inspect everything I fear!!

                  March 13, 2016 at 8:59 pm #33386
                  crosbyman
                  Participant

                    Canada Member - 2 Years

                    dont say that 😯

                    Joining AOMCI has priviledges 🙂

                    March 13, 2016 at 10:59 pm #33397
                    PugetSoundBoater
                    Participant

                      😀

                      quote Jeff Register:

                      Guys,
                      Something that is 60 or so years old needs a complete tear down to inspect everything I fear!!

                      Jeff is correct , and I will get inside the lower unit. I also carry a 2hp backup motor and oars. 🙂

                      "Some people want to know how a watch works, others just want to know what time it is"
                      Robbie Robertson

                      March 15, 2016 at 3:10 am #33468
                      PugetSoundBoater
                      Participant

                        After letting some engine tuner and LPS sit in the cylinders in an upright position for a couple days,I went to do a compression test and found that my recoil starter is missing some parts. From the 1953 parts list I need 3 equalizer springs pn 202155
                        Equalizer cup 202114
                        Starter friction spring 302222
                        Looks like the friction spring has a broken end but has a few revolutions around the hub .
                        I could send a photo of what I’ve got to someones email but don’t know how to post photos here yet
                        Also are the lower unit seals still availiable:
                        Clutch rod upper seal 202612
                        Clutch rod lower seal 202590
                        Driveshaft seal 202274
                        Propshaft seal 202686
                        I did do a couple pulls with a short rope for a compression test -first 2 pulls over 65. That’s good news.
                        Thanks ,Jim jimfryk.2@gmail.com.

                        "Some people want to know how a watch works, others just want to know what time it is"
                        Robbie Robertson

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