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Johnson Sea-Horse (1940?)

jbripsbass

Registered
I have what I believe to be a 1940 Johnson Sea-Horse outboard. I can find no identification about horsepower.

It has 2 cylinders and I’m guessing by the size it’s around 2hp. Trying to find a site that could let me know about the correct oils and maintenance info also.

I got it running but need to go through it before I use it as a trolling motor on the boat. Any information on this motor is appreciated. There were six numbers stamped on the underside of the pull start that gave me the possible year for the motor. Thanks
 

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Steve A W

Registered
Re: johnson seahorse (1940?)

At the base of the power head will be the model number.
It will be stamped into the metal on a flat spot.
It will be two letters and two numerals (HD15, TD20) something
like these.
Oil ratio should be 16 to 1.
Use a marine grade TCW3 two stroke oil.
If you need more help go to the Antique Outboard Motor Collectors
club web site. Go to the Ask A Member Forum.
They just launched a new web site and all the bugs haven't been
worked out yet. So please have a little patience.
https://aomci.org/

Steve A W

 

uglyblue66

Subscriber
Last Subscription Date
11/07/2018
Re: johnson seahorse (1940?)

i will keep up with this thread as my dad used Johnsons and they are still in the shed. from the late 40's to early 50's 1's. I have a 5 down there but his are 2.5's I think and 1 10 hp.
 

jbripsbass

Registered
Re: johnson seahorse (1940?)

Thanks for the info for the model number. I’m looking forward to getting running good so I can use it I was surprised how little information I could find on it so far. Thanks for the site recommendation.
 

Harry

Administrator
Staff member
There was one of those in my family many years back. I believe that it was a 5HP and it had a neutral shift that you could activate, spin the motor around and put it back in gear to go backwards. Many moons ago (50s & 60s) bass fishing with flies at night in the dark of the moon. The boat was a wooden 14 ft Thompson with a stained finished deck. I was at the age when I would crawl up under the deck and snooze. We also had a 12 ft wooden rowboat that was not too good when the lake got choppy. I think the Johnson made its way down the road from my brother's estate sale.
 

uglyblue66

Subscriber
Last Subscription Date
11/07/2018
The 10hp has very few hours on it.
The smaller 1's are the 1's my dad and grandfather used.The 5 hp to the far right is 1 I drug out of a junk pile to save from scrap.
Best I can remember my dad said the smaller 1's are 49 models?
 

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Steve A W

Registered
The 5 1/2 horse is a 54 or 55.
The 10 horse is a 54.
The other three you will have to run the serial numbers.

Steve A W

 

Robrep

Registered
Hi I am working on one similar to yours ( kind of looks the same 3 hp) but it was mfgd in1964. Marineengines.com oddly enough had all the parts I needed. They seem to be a good source for old outboard parts. Good Luck Rob.
 

ulgydog56

Registered
try discount marine parts out of Michigan if you need parts, carb rebuild kits they carry old outboard stuff for many brand names and yes Johnson, they helped me out.....1-906-466-2180...:D
 
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