Trying to Figure Out what Outboard This Is?

[Decapolis]

Hi,
I found an outboard at a local reuse center for ~$25. It won't give spark on either cylinder, and I'm planning on trying to get it going as a sort of a 'spring project'.
The problem is, however, that I'm not quite sure what it is I have? I'd like to get a service manual and see what spares are available, but have no idea of the engine in question's manufacturer/model/year, and wonder if you could help me identify it? It doesn't have anything (that I can see) that would give a clue, as the mounting bracket (and info plate attached to it) doesn't appear to be the original one that came with the engine.

Image of the outboard here.

Thanks for any help with this!

 

[glassmaster68]

Re: Trying to Figure Out what Outboard This Is?

im totally not sure,but the fuel hookup looks like omc johnson evinrude style,i would think an evinrude,,go to the johnson evinrude area and one of those guys will identify it for sure,,,hope that helps

 

[JimS123]

Re: Trying to Figure Out what Outboard This Is?

Its an OMC, probably an Evinrude, most likely in the 25-35 HP range and from roughly the 1980's time period. One of your pics shows a black nametag on the port side of the transom bracket near the clamp. That will show model and serial number. If you can provider that number I'll give you exact year, HP, oil ratio, spark plug, etc.

However........, since the transom bracket is a diffeent color than the powerhead, it may have been replaced at one time. So, check the silver freeze plug on the powerhead to be sure its the same number. The powerhead number takes precedence.

 

[tmcalavy]

Re: Trying to Figure Out what Outboard This Is?

Looks like a Franken-Jonny-Rude, but can't tell the year...there's more than $25 of saleable parts on it, even if it's locked up. If it's not locked up, buy it and run it....there are worse ways to toss $25.

 

[eavega]

Re: Trying to Figure Out what Outboard This Is?

That looks remarkably like a 1972 Johnson 25 HP I have (except for the blue paint). I say that based on the odd backwards "Q" shape of the air silencer/Carburetor cover. I needed that part, and it seemed to be interchangeable with any 20-25 HP Johnson from 1970 - 1975 or so. If you poke around the http://shop2.evinrude.com schematics enough in the 20-25 HP motors, you will likely be able to narrow it down.

Incidentally, if it is a 25 HP Johnson and you need parts for it, I have the previously mentioned motor in pieces in a box (1 cylinder exploded, motor is beyond being worth fixing), and I no longer have any use for said parts. I'd be willing to give it to anyone willing to pay the shipping for it...

-E

 

[Jack Shellac]

Re: Trying to Figure Out what Outboard This Is?

I believe eavega is right. My 1972 Evinrude looked just like this and was also equipped with the same shade of blue paint. As of several years ago, parts were still readily available. Don't know about now.

 

[Chinewalker]

Re: Trying to Figure Out what Outboard This Is?

It is an Evinrude 18 or 25hp from the early 1970s, no later than 1973. The model number may be on the freeze plug on the side of the cylinder block. Great old motors - if compression is good and all you need to do to it is tune up the ignition and install a waterpump (matter of course) then you're WAY ahead! Hoods aren't too hard to find - any 18-25 Johnrude hood from the early 1970s up into the 1980s (20 to 35hp at that point) will fit.
- Scott

 

[seahorse5]

Re: Trying to Figure Out what Outboard This Is?

That carburetor first came out in 1969 and the engines went to an ET type ignition in 1973 that had blue coils by each sparkplug. Your motor is within that '69-72 year range.

 

[Chinewalker]

Re: Trying to Figure Out what Outboard This Is?

The more I look at this motor, the more it looks like a Johnny Cash motor ("One Piece At A Time..."). The ignition is certainly pre 1973 standard magneto, but the tiller bracket is later style. The clamp brackets are Johnson origin. It is certainly later than 1970, as that was the last year of the spaceship cowlings. Whatever it is, it's a 22-cubic inch, 18 or 25 horse. The exact year isn't a huge deal as most of the basic maintenance stuff from a c. 1972 Johnrude 18/25 would work on it.

 

[Decapolis]

Re: Trying to Figure Out what Outboard This Is?

Hi again, thanks for all the replies!
I bought it yesterday, and now have the serial numbers.

On the white mounting bracket, it has the following information:
Model No: J20BFCIM
Serial No: B 008535

However, as was mentioned here by Chinewalker, it doesn't appear to be from the original motor. On the silverish plug on the powerhead, these numbers are available:

205B62B
B 07583

So if I understand correctly, this is a 20hp Evinrude from 1975?
I'd be very happy if someone could inform me what type of spark plugs this motor takes? Thanks!

 

[Lion hunter]

Re: Trying to Figure Out what Outboard This Is?

I believe that is correct. 1975 Evinrude 20hp motor and 1981 Johnson 20hp mount. Kind strange about the plugs all the listings jump over 1975 on both Johnson and Evinrude. I would guess it would be and RJ8C Champion. Thats what every other year around it uses, but thats just a guess.

 

[JimS123]

Re: Trying to Figure Out what Outboard This Is?

Most all of the OMC's of that vintage used L77JC4 with a 0.040" gap. That's what I remember from the ones I owned bak then, plus thats what my book says.

Funny thing though...my book does not show a 20 HP model in the 1970's or '80's. There are only 25 HP models.

Could the motor here be made for export?

 

[Chinewalker]

Re: Trying to Figure Out what Outboard This Is?

Are you by any chance from Canada? They had a 20hp model that was not available in the U.S. It's essentially the same motor as the American 18hp model - only difference MAY be (rumour has it) that the reed stops were opened a hair on the 20 over the 18...

Also, as noted, a true 1975 should have the low tension magneto with the coils on the cylinder head. Yours has the pre 1973 ignition with the coils under the flywheel...