Recent content by John Lapic

  1. J

    71 Evinrude normal compression?

    I’m sure someone knows what compression I should be carrying on my 71 18 hp Fastwin. I measure 89 and 91 psi but don’t know what the specs are. It’s running rough and I’ve changed plugs and have a good 5/16 spark, soaked the carb but am doing that again, adjusted the low speed till it started...
  2. J

    Local Evinrude mechanic needed

    Ok here’s what I’ve found, I’ve got 5/16 spark on both plugs, compression is 89 and 91 psi, primer bulb does not go hard like it used to, I’m not sure how to check the pump diaphragm. I did disassemble it and all rubber components appear good. I did notice it have one small spring where it...
  3. J

    Local Evinrude mechanic needed

    Primer bulb does not go hard which I thought was odd. I replaced the primer hose last year and it never went hard like the previous. I chalked that off to a new design but may have been wrong. I will say the carb is confirmed clean. I soaked it once it was disassembled in carb cleaner for the...
  4. J

    Local Evinrude mechanic needed

    Should read posts before submitting. I meant to say what could it mean if it DIES after pulling either plug boot
  5. J

    Local Evinrude mechanic needed

    If the outboard should run on one cylinder what would it indicate if it does after pulling either plug boot? Could whatever that is cause a rough running unit? I did change points several years ago when I bought the motor and it gets very little use. I was planning to run some Seafoam through it...
  6. J

    Local Evinrude mechanic needed

    I adjusted as described below. See my reply and photo I’m hoping someone can help me figure out. Thanks
  7. J

    Local Evinrude mechanic needed

    I adjusted the low speed per your helpful guidance and got the best performance, though it still seems to run a little rough. I also pulled plugs one at a time and engine died when each plug was pulled. I didn’t check compression. I could use some help identifying a hose (vacuum?). It runs from...
  8. J

    Local Evinrude mechanic needed

    Can anyone help me locate someone near my home in Salt Lake City, UT that works on old 2 stroke Evinrude’s? I have a 1971 Evinrude 18 hp Fastwin. Wouldn’t start this year but after going through the carb, I got it running. I am having trouble adjusting the low speed and would like someone who...
  9. J

    Hard starting at higher altitudes

    I have a 71 Johnson 9.5 and live at 4000 ft. Last winter I changed plugs, points, condensors, and replaced one coil. At home, in a barrel, I had it starting, with choke on, with one pull of the starter rope. Most lakes near me are at 6000 ft. At that evelation, it takes 30 or more pulls to...
  10. J

    How do I check for a good spark?

    I have a 1971 Johnson 9.5 and just finished replacing points, plugs and condensor. I checked to make sure I got spark by grounding the plug to the block and pulling the starter rope. One coil put out a bright spark, The other sparked but clearly not as bright. I used the same plug for each test...
  11. J

    Looking for a used 8 X 6 1/2 prop

    I need to reduce the pitch on my 1971 Johnson 9.5. I am currently running a 8 X 8 but at WOT I am running at 3900 RPM. Specs say I should be at 4000 to 5000, so I'd like to try a lower pitch. It's an old motor so I am in the market for a used prop. It is a 3 blade pin drive. Anyone got a source...
  12. J

    Hard starting 71 Johnson 9.5

    I pull the starter rope till I can almost not pull anymore before I can get my 1971 Johnson 9.5 running. Once I finally get it running, it runs great and will re-start with one quick pull of the starter rope the rest of the day. I have already adjusted the low speed. High speed jet is a fixed...
  13. J

    Looking for a used 8 1/4 X 7 prop

    I have a 1971 Johnson 9.5 with an 8 pitch. I took it from 1000 ft above sea level to 5000 ft. After rejetting the carb, I have had several folks suggest I drop from an 8 pitch to a 7. This is an old motor so I am looking for a used 8 1/4 X 7 pitch, standard rotation, pin drive. I have searched...
  14. J

    Motor cuts out at WOT

    My 1971 Johnson 9.5 runs fine at trolling speed. When I go to WOT, it periodically dies. After pumping the fuel line bulb, which had no pressure when it dies, it would restart with no problems. I am thinking two possible problems, lack of venting in the tank or fuel pump issues. Can anyone shed...
  15. J

    Where can I find rejet info?

    I have a recent post regarding no power at WOT. I have taken my 71 Johnson 9.5 from 1300 ft to 6000 ft. and it will not open up. Two local dealers suggest changing prop pitch. Several of you suggest a rejet which I like as my first option. Problem is I have contacted every dealer in my area and...
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