Help getting my 67 Evinrude 3hp started

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    Elecmuso


    Replies: 38
    Topics: 1
    #195566

    Hi
    I’ve inherited an old 1967 Evinrude 3hp motor. FOr the last 20 years it has been lying in its side. Before that it was running fine.
    This motor is the same model:

    Can anyone offer some advice getting it started again?
    Both spark plugs are generating sparks.
    I’m currently using ordinary 2 stoke mower fuel which is 50:1. This should be 25:1 I believe but that shouldn’t stop it from starting I assume.
    Have no manual so not aware of the correct startup procedure.
    Fuel line to the carby is getting fuel but for some reason only half the fuel lline is full of fuel (the carby end). There is plenty of petrol in the tank.
    Any hep much appreciated!

    Tubs
    Tubs

    US Member - 1 Year
    Replies: 3070
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    #195571

    Avatar
    Elecmuso


    Replies: 38
    Topics: 1
    #195572

    That could be it! Thanks!

    Avatar
    Elecmuso


    Replies: 38
    Topics: 1
    #195573

    Here’s what I have just fished out of the gas tank.

    Filter

    • This reply was modified 5 months, 2 weeks ago by AvatarElecmuso.
    • This reply was modified 5 months, 2 weeks ago by MumblesMumbles.
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    Elecmuso


    Replies: 38
    Topics: 1
    #195577

    So that means there are bits of that filter and no 15 in your diagram still in there. Is the tank easy to remove or clean out?

    Tubs
    Tubs

    US Member - 1 Year
    Replies: 3070
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    #195578

    • This reply was modified 5 months, 2 weeks ago by TubsTubs.
    • This reply was modified 5 months, 2 weeks ago by TubsTubs.
    Avatar
    Elecmuso


    Replies: 38
    Topics: 1
    #195583

    Thanks Tubs.

    I’ve removed the outlet tap from the tank and it is not clear to me how the filter mounts onto the input of the fuel outlet tap (item 15 in your diagram).

    If you have a close look at that photo of the filter I provided you will notice that there is no flange on it – it would appear to have broken off. Perhaps bits of that have gotten into the carby?

    Ii suppose or the moment I could continue without a fuel filter.

    Tubs
    Tubs

    US Member - 1 Year
    Replies: 3070
    Topics: 169
    #195585

    I had to start a new thread because my reply wouldn’t come up.
    The issue with the board are never ending.

    Avatar
    Elecmuso


    Replies: 38
    Topics: 1
    #195588

    Found this:

    frankr
    frankr


    Replies: 5234
    Topics: 48
    #195593

    The guy in the Johnson video totally missed the filter. When he unscrewed the adapter fitting from the tank (with difficulty), the filter was still in the tank. Normally, the filter is soldered to the adapter fitting. On the Johnson video, the filter is stuck in the tank outlet and he tore the solder joint loose as he removed the adapter fitting. On your Evinrude, the filter has come loose from the adapter fitting and was laying loose in the tank, and you fished it out.

    Either way, those filters were never intended to be cleaned. You were supposed to replace it, filter and adapter, as a single piece. Yeah, yeah, I know, some people claim they can be cleaned. Whatever. I’m just saying how it is supposed to be.

    Your Evinrude probably has crap in the carburetor, keeping it from starting. The fuel has to pass through the main metering jet (orifice plug), which is only about 0.030 inch diameter. Such a small hole is easy to plug up with goop or particles.

    What I’m saying is you need to do a complete fuel system cleaning, tank to carb. And put it back together with a good filter

    And while you have the tank off is a good time to check the coils. It would be very common to find them cracked.. You are wasting your time until they are replaced, if they are cracked.

    Avatar
    Elecmuso


    Replies: 38
    Topics: 1
    #195595

    I noticed that the spark on one plug was seemingly weaker than the other. Would that suggest a cracked coil?

    Steve D
    Steve D


    Replies: 572
    Topics: 67
    #195596

    Possibly…or bad condenser, bad or dirty/oily points, plug wire or connection to coil or spring clip.
    67_3HP.pg2_

    67_3HP.pg3_

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    Elecmuso


    Replies: 38
    Topics: 1
    #195600

    Cheers
    I got the gas tank off earlier no problems. Next I need to get to he coils to check for cracks. The diagrams you’ve provided will help.

    Avatar
    Elecmuso


    Replies: 38
    Topics: 1
    #195601

    To check the coils requires flywheel removal. Do I need a puller or is there a trick to getting it off without one? Is this a path I should go down or should I clean the tank, reassemble and cross my fingers? This is all pretty new to me.

    frankr
    frankr


    Replies: 5234
    Topics: 48
    #195602

    I would remove the flywheel for a look-see. You need a 3-bolt puller that uses the three holes at the center of the flywheel. A harmonic balancer puller from an auto parts store will work. Some stores will loan one. A torque wrench to reinstall the nut is also highly recommended. Tighten the nut to 30-40 foot pounds.

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