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Johnson 9.9

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Jer123

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Thanks for the add, have searched in the Johnson site and don't see my question anywhere. My Elderly father in law just gave me a what I believe to be 77 Johnson 9.9. He came in from lake 2 years ago and pulled motor off boat, and let it sit.....only fact I know it's not locked up. What should I do before trying to start?
Thank you
 
In my opinion, 2 years is nothing. Put some gas in it and fire it up and see how she works. Of course you will want it in a pail of water and if she runs fine, then put in a new impeller, even if it is working well.
 
^^^ Only if the gas was drained (and not allowed to evaporate, leaving 'varnish' contaminating carburetor/s).

Since you are replacing the rubber WP impeller (as you should), better to replace it before running it, or if you must know if it will start, run it very briefly (seconds) w/o water.

With a disintegrating rubber impeller, you run a risk of pumping little pieces of rubber up into cooling passages where they can cause blockages.

Whenever replacing impeller, if you find missing rubber vanes, find and remove them.
Art
 
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Assuming you're not knowledgeable in the mechanics of the engine here... let us know if otherwise.

Notice where the lower unit attaches to the long exhaust housing. The water pump sits on top of the lower unit at that point. When attempting to start the engine, have the water level (usually in a large plastic trash can) 3 or 4 inches above that joint so that the water pump is submerged. It IS NOT a self priming pump!

You may be lucky... give it a try (starting) as is. Usually the two areas of repair when sitting for a long length of time is.... cleaning and rebuilding the carburetor,,, and... replacing the water pump assembly.

The fuel/oil mixture is 50/1.... 1 pint of good quality 50/1 oil to 6 gallons of gasoline (87 octane gas will be fine).
 
You should also clean out the fuel tank and hose. Many people contaminate their outboards from old rotten fuel in the hose. Carefully take the outboard end off the hose and blow air through and see what comes out. There may be no need to take the tank coupling end off. If the stuff coming out the hose looks bad then take the hose apart and rebuild it with new 5/16 rubber gas line from your parts or hardware store. I like high quality zip ties for the clamps. Squeeze bulbs are costly. So just flush it good with fresh solvent or gasoline if it is decent shape. As Mr Reeves and others suggested, an impeller replacement should be done, even if it pumps water in the container.
 
Ok, first hurddle...the plate states a E5226322 for serial. And J10RCSE. That don't come up to anything I can find on model year? Is there another place to find serial?
 
The model number is what is important in determining the engine you have.

The Evinrude and Johnson (OMC's) code is the word INTRODUCES whereas each letter signifies a number.... I=1, N=2, T=3, etc.

The "CS" within model #J10RCSE indicates "80"..... (1980)

J = Johnson
10 = 9.9 Hp
R = Rope model
C = 8
S = 0
E = Factory run number... Of no consequence

 
At minimum I would replace the water pump impeller. Setting for 2 years with no use the rubber fins can become stiff and not pump water properly.
 
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