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  1. K

    Poppet Valve question, 94 Yamaha 115.

    If memory serves me correct, I remember reading somewhere that the poppet valve opens only when the engine is at higher speeds (because of higher water pressures from the water pump) and it dumps the water out through the overboard exhaust pictured below. The if at high speed, water is not...
  2. K

    Manifold Nipple Leaks Excessive Oil 1983 60hp

    My neighbors 1983 Evinrude 60HP E60ELCTB always has a mess of black dirty oil that pools on the front of the engine below the carbs. It's a mess. The oil looks like it is coming from the intake manifold hose that goes to the base of the carburetor silencer. I only see that lone hose going to the...
  3. K

    Amphenol Connector Tools Hack

    If you need to replace or fix an Amphenol connector, the tools to do it, three screw driver handles tools, cost like $80 as a set. I think the average engine owner might never use the tools but once, so they just replace the Amphenol connector with a different connector type that they can easily...
  4. K

    Force 5hp Cowling Starter Rope Outlet Modifications?

    The starting rope wrapping pictured in the prior posting slips off after a few pulls, so, I changed it to this wrapping below, and it does not slip and it is easy to take apart (basically a knot with the aluminum piece inside the knot:
  5. K

    Force 5hp Cowling Starter Rope Outlet Modifications?

    Cutting the cowling - I measured the stock handle and it would have to be changed to a smaller one or else the cutout would have to be bigger than the rectangular vertical surface where the handle rests now. Moreover, after cutting we'd have to deal with water getting in there. And, cutting is...
  6. K

    Force 5hp Cowling Starter Rope Outlet Modifications?

    Anyone ever seen a picture of a 5hp Force colwing where someone modified the rope start outlet so you can take off the cowling and put it out of the way without having to take apart the rope handle? Has anyone come up with a better solution than having to take the rope handle apart?
  7. K

    Electrical Experts Advice - Stator Replacement?

    I have a 1990 Evinrude 70hp E70TLESB that it looks like the stator needs replacing, since it failed every test. The sensor coil on the other hand, hopefully, has just a bad connection. What does that Sensor Coil blue wire A do and how do I trace it. I need advice form the electrical system...
  8. K

    Bad Synch & Link Adjustments 1990 70hp

    The other stator tests they have in the manual requires a peak reading voltmeter, I am awaiting delivery of an Electonic Specialties 640 DVA Adapter, so I can also do those tests with my digital multimeter, to double check everything.
  9. K

    Bad Synch & Link Adjustments 1990 70hp

    I followed the instructions in the manual for the ohmmeter test on the stator assembly (see below picture) and got 350 ohms on the first test, well below the required minimum of 480+- 25 ohms, and on the grounded test I got 32ohms on both A&B, which should have been 0.00, so it did not pass...
  10. K

    Bad Synch & Link Adjustments 1990 70hp

    Here is all it says about adjusting the thumbwheel on the Throttle Cam:
  11. K

    Bad Synch & Link Adjustments 1990 70hp

    Nowhere can I find anything in the manual for my 1990 Evinrude 70hp 3 cylinder that mentions the timing mark degrees required, or having to test it with a with a timing light, or that the adjusting of the Throttle Cam thumbwheel affects the engine timing. I do find the situation explained for...
  12. K

    Bad Synch & Link Adjustments 1990 70hp

    Do you mean loosening the locknut and adjusting the thumbscrew on the Throttle Cam? If so, I already did mess with it.
  13. K

    Bad Synch & Link Adjustments 1990 70hp

    I'm trying to finish my friend's 1990 70hp 3 cylinder so he can sell the boat, and I have run into a problem with the Idle Speed and Synch and Link adjustments, here it is: On the water, I had to set the idle speed at the maximum the idle speed adjustment screw would go in, in order to get the...
  14. K

    1960's 70, 80's Engines still going. What about 2000's+ 4 strokes?

    I see tons of postings here about 2 stroke 1960's 70's, 80's engines still going strong. I don't think the 2000's+ 4 strokes will last anywhere near that. I mean, for what little most people use their engines, with Winter, and only weekend or Sunday time, a 4 stroke engine is not getting any...
  15. K

    SprayMax 2k Glamour Clear Coating spray can on cowling

    Yesterday was an 80 degree day here in Central Florida, so I was able to spray the cowling of a 1990 Evinrude 70hp with SprayMax 2K high gloss Glamour clear coat, 3 coats, after having painted the cowling like 4 months before with Dupli-Color automotive paint. The job looks unreal, super gloss...
  16. K

    Reving to 6000+ RPM at Cold Start

    This engine uses a solenoid primer assemble, it squirts fuel directly behind the carb and into the intake manifold, I have looked at others like it on my 25hp and 115hp Johnsons and I could see the fuel squirts whenever I push the key in, I think it is an on-off switch, if you hold the key down...
  17. K

    Reving to 6000+ RPM at Cold Start

    I've tried every which way to cold start my friend's 1990 70hp Evinrude without over reving it, but it seems almost impossible. It has a priming pump which is controlled at key switch. I don't not like to rev my own 1990's Johnson/Evinrude engines at more than 2000 when I start them, but this...
  18. K

    How do you test a Vernatherm?

    All the other Johnson/Evinrude engines I've had (all from the 1990's) 6hp, (2) 25hp, 115hp, and even a Yamaha 115, all registered about 138 at the cylinder head on the surface on each cylinder, when I tested them with a flusher. This 70hp is at 168-170 on the bottom cylinder, and the cooling...
  19. K

    How do you test a Vernatherm?

    My take of how this thermostat system functions on my engine: Looking at the new thermostat design, the little holes at the tip of the thermostat is all the water that can get out to cool the cylinder head cover while the engine is cold, basically it looks like those little holes are there just...
  20. K

    0434137 - Thermostat, 140 Degrees

    I'm having overheat issues and so took apart the 0434137 Thermostat, 140 degrees which I bought from marinengines.com, and I find that the vernatherm says on it 143F (that's 143 degrees) which is the older temperature vernatherm which was replaced by the 0434137 Thermostat, 140 degrees, it also...
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