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JOHNSON OUTBOARD 1990 30ELEN WHAT IS THE COMPRESSION NUMBER SUPPOSED TO READ ON A COMPRESSION TEST... (HOT OR COLD ENGINE? TKS JERRY

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As long as all cylinders are the same there should be no problem only a guess anymore as I have no manual to refer to since my dealer sold out but it might be 90 or close to that

Posted on Dec 02, 2016

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I have a 50 hp Johnson outboard or do I disconnect the shift linkage to get the lower unit off


have a look at the videos

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Jul 07, 2017 | Johnson Boating

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My boat motor Johnson 90 hp will not rev up throttle is wide open have checked coils fuel pump new spark plugs. all good boat sank a few years back. before that ran great.it is a 1986 unit


it sank..ooopppsss...sounds like trouble.. First thing I would do is check the compression with a gauge... This will require a GREAT friend.. remove all the spark plugs - makes PULLING the engine over easier.. get a compression gauge (or take it to a competent professional to get the compression checked!). Install the compression gauge... Put the throttle wide open... have your buddy yank with ALL his heart about 6-8 times..it should show about 115psi+ minimum..all 3 cylinders should be with 10+-psi.
If they are not at these specs minimum..you have found the issue..then try putting a little outboard oil into all three cylinders and repeat the test.. if the PSI goes way up.. you have found the issue.

Jun 11, 2017 | Johnson Boating

1 Answer

How to find the model number for my johnson outboard from serial number


On the port side where the outboard attaches to the boat there is a plate that has your engine model and serial number.

May 07, 2017 | Johnson Boating

1 Answer

What year is a evinrude outboard with serial number 1451821


The motor HP is critical in such searches. Here are all the resources you need to find the information yourself.

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How To: Outboard Engine Serial Number Year Match, iboats.com How ...

www.iboats.com/basics/serial_number_year.html
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For engines prior to 1969 refer the the Johnson 1960-1979 serial number year chart located here. If you have a commercial model refer to the Johnson commercial serial number year chart located here. Evinrude changed how they indicate year in the model number in 1980.Mercury Outboard · ‎Evinrude Outboards 1950-1979 · ‎Johnson Evinrude Commercial

[PDF]5006145_Model Number Reference.fm - Evinrude

shop.evinrude.com/media/document/ModelNumberReference.pdf
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www.marineengine.com/manuals/evinrude/
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The nameplate should contain a model number and a serial number. The model number will identify the year and certain details of that motor. 1980-Present: Evinrude outboards from 1980 to the present use a model number that can help determine the year and features of the motor. See the model number code here.0.5HP · ‎0.9HP · ‎1HP · ‎1.1HP

Marine Motor Look-Up Guide - Auto Repair Manuals

www.autorepairmanuals.biz/page/599222
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www.maxrules.com/models/OMC_models_files/EVthru79/ev_index_79.html
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WHAT YEAR IS THAT OLD EVINRUDE? FIND OUT HERE ON OUR MODEL YEAR LOOKUP CHART! evinrude outboard with serial number Google Search

Nov 29, 2016 | Boating

2 Answers

Johnson V4 outboard #C0020325 I'd like to know the year and hp of this engine


call your local outboard dealer . they will help you figure it out

Sep 12, 2016 | Boating

1 Answer

What should the compression be on a 1988 evinrude 185hp outboard?


The compression on your Evinrude outboard should be at least 100 with no more than 10% difference between cylinders. Keep in mind gauges can give very different results. Also, remember the test should be run when the engine is warm!

Hope this helps!

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What year is my Evenrude 5.1 outboard


provide a model number and perhaps someone can assist you .

May 10, 2016 | OMC Johnson Evenrude 9 1/4" X 9" Stainless...

1 Answer

My 1988 ( i think) 6hp Johnson outboard motor is always hard to start if it is cold. It can take 10 - 15 minutes of pulling on the cord to start it when cold but will start first go every time once it has...


I would suggest you replace the 2 coils. Also, is choke closing properly? The carb if never rebuilt, could cause this problem. A carb kit and 2 coils should not cost much, maybe 20 each for coils and 17 for carb kit. Make sure carb is adjusted properly with outboard in water and warmed up. Mixture screw should be turned in slowly clockwise until engine just pops(lean). Then slowly open it apprx. 1/8 turn. This will aid engine in starting next time. Also, make sure primer bulb firms up when squeezed.

Feb 09, 2011 | Boating

1 Answer

Engine not running


Let it dry out a day or so, perhaps in the sun or a warm place. Try again. If it still won't start, try to find a fuel line or fuel jet and inject some compressed air in to blow it out a bit. Good Luck!

Dec 16, 2008 | Boating

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