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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?

    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?
  5. 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...
  6. 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...
  7. 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...
  8. 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...
  9. 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...
  10. 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...
  11. K

    Evinrude 70hp Overheat Alarm

    1990 Evinrude 70hp I am fixing for free for a friend, it is overheating, alarm goes off. Here's what happened till now in brief: - engine ran cold, 100 degrees and would not warm up. It idled very fast. I couldn't do a link and synch because it would not warn up. - I checked the thermostat and...
  12. K

    Warped new head gasket?

    I bought this head gasket on Ebay and it arrived yesterday. The gasket does not lay flat, it is curved up, it does not naturally lay flat. Is this Ok to install or should I return it? I've installed about 10 multi-cylinder head gaskets in the last 5 years, and they were always OEM or Sierra, and...
  13. K

    Over torqued head bolts?

    I changed the head gasket on a 70hp 1990 Evinrude, cleaned everything spotless and applied Permatex Avation liquid to the bolts and installed in sequence and torque specs of Evinrude manual 18-20 ft lbs. I tested the engine in the tank and had a small leak out one of the bolts. I ran the engine...
  14. K

    Broken Head bolts removal

    I removed the head on a 1990 70hp Evinrude and 6 of the 14 bolts broke off. When I removed the head, I found that luckily the remaining bolts protruded out like studs. In the past I was able to easily remove the "studs" by using PB Blaster and a center punch and mallet to break them loose, and...
  15. K

    0584589 Temperature switch for 70hp 1991 - What is closed switch temperature?

    Does anyone have the temperature operation range on the part 0584589, the temperature at which it closes and activates the alarm? Temperature switch 0584589 is used on the 28-175 hp engines from 1993-1997. It is an upgrade on my 1990 70hp, so my manual does not show the open /closed switch specs.
  16. K

    Change to new thermostat valve seat on all Loopers Service Bulletin 2225 April 1990?

    I have high speed cooling issues, and have to change the thermostat valve seat on a 1990 70hp Evinrude and ordered the parts listed in marinegine.com, the two piece thermostat valve seat & cup. But upon further investigation I found this bulletin saying to switch to an upgraded one piece...
  17. K

    How do you test a Vernatherm?

    1990 Evinrude 70hp uses Vernatherm type thermostat 0434137, it is one piece, it can't be disassembled. The original one could be disassembled and I have it. I'm fixing the 70hp for a friend and found that the thermostat was stuck open, the head would not warm up, so I bought the new one piece...
  18. K

    BRP Evinrude Dark Blue Metalic Spray Paint - How long to fully harden?

    I painted a 1990 70hp Evinrude with BRP 777174 Dark Blue Metalic spray paint, I degreased it a few times, and finally cleaned with denatured alcohol, and dusted it with one coat of Zinc Chromate, then painted with 3 coats of the BRP paint. About 15 hours later it was still not fully hardened, it...
  19. K

    Infrared Thermometer, Temperature Gun, a Must Have Tool

    Your outboard motor peeing great just means your water pump is working well, it does not mean your engine is being cooled, as the stream comes out before it reaches the cylinder head. Here in Florida, 80% of the used outboards I have bought had clogged cylinder head water passages, some totally...
  20. K

    Magnetic Drain Plug that uses O-Ring, What is Part #?

    I have a 1990 70hp (E70TLES) I am fixing for an old friend, I was changing the gearcase oil and found that both the magnetic drain plug on the bottom and the regular plug on top both use O-rings and have the groove for the O-ring. Looking at the parts diagram for the engine on marinegines.com...
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