1960 40hp johnson super seahorse?

fish393

Seaman Apprentice
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Jun 9, 2004
Messages
36
1]Can this outboard be started without a battery conected to it? When the pull start is pulled should there be spark.It has an starter but can it be pull started.<br /><br />2]Does the starter motor need a wire harness and solenod to use it and if so were can you find one?<br /><br />3]Is their a good supply of parts and is this outboard motor a good one and worth investing in <br /><br />4]What should the compresion be cold cranked, point gap and is the mix 24-1 thanks fish
 

alcan

Commander
Joined
Dec 14, 2001
Messages
2,505
Re: 1960 40hp johnson super seahorse?

NO.1 yes<br />No2 yes<br />No3 yes and it's up to you to decide<br />No4 There is no set value, I like to see over a 100psi, but as long as the #s are even or with in 10% of each other. Point gap is .020 mix is 24:1.<br />My best advice is for you to buy a manual.
 

WillyBWright

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Dec 29, 2003
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8,200
Re: 1960 40hp johnson super seahorse?

1) That motor can be started with no wiring harness connected to it at all. But you'll have to choke it to death to kill it. I had one. I had three good pulls in me, then I ran out of steam. They don't pull start very easily, but they do start with the rope.<br /><br />2) There is a transom mounted electrical box with a main harness to the motor and a harness to the dash, plus battery cables. The starter solenoid is in there. They're fairly common and were used on Johnsons, Evinrudes, and Sea Kings in the 35Hp to 40Hp sizes from about 1959 to 1963 or so. Try ebay or Twin City Outboard if you can't find one locally.<br /><br />3) Select parts are readily available. Whether it's worth fixing depends mostly on the condition of the powerhead and the gearcase. If you have to spend more than a couple hundred on parts, it ain't worth it.<br /><br />4) Compression should be somewhere between 90 and 110. Point gap is .020", sparkplug gap is .030", You can run it on 50:1.<br /><br />5) If the coils are original, they'll need to be replaced by now. The plastic around them decays over time and cracks. They're about $24 each. <br /><br />6) The gearshifting was crude and the mating surfaces of the shifter and gear round off making them pop out of gear. The gearcase parts are quite expensive if they are still available, and used ones will probably have the same wear problem. There were newer updated parts available that helped alot with that problem. If you're lucky, maybe yours has the updated parts. If the gearcase problem exists on that, I'd about abandon the idea of making it go again. But they're strong runners and good starters when everything is right.
 

rolmops

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Joined
Feb 24, 2002
Messages
5,522
Re: 1960 40hp johnson super seahorse?

Hello fish.<br />These old beasties are very strong and dependable.There is a bit of a problem with the '59 and the '60 series. Although they are 40 horse engines they still used the weaker 35 horse piston parts.A lot of them were changed over later to the heavier 40 horse stuff.When they are tuned up the right way,they should start easily with the rope.The wiring harness and "starter box" is only needed when you want to run it on remote controls with electric starter.But the entire set is available from : www.tcoutboard.com<br />or if you are close to Rochester from Mayers Marina at 585-323-1010.It would be well worth the trip because Bill Mayer has worked on these machines for the past fifty years and he hands out advice freely.<br />Do not run that engine on 1:50.You must use TC-W3 twin cycle oil for water cooled engines(outboards)This will allow you to safely run it on 1:32,but going any leaner is tempting disaster,specially if it still has the 35 horse piston parts in it.<br />the points are at 0.020 inch and the sparkplug is J4C champion at 0.030 inch.<br />good luck.
 

vermontmountain

Recruit
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Jul 13, 2004
Messages
1
Re: 1960 40hp johnson super seahorse?

Hi Friends<<br />I can not get my 1966 40 HP Evinrude Big Twin to Go. It runs for about 2 seconds and quites. I had a mix of 16 to 1 in the tank ,did not know any better, and ran the motor for about five minutes. I changed the gas to a 50 to 1. Now will not run. I am using the pull start. I changed the plugs They had lots of Oil on them. I set the gap ant .030. Do you think I just gummed up the carb and is there a easy fix. I have good spark. If I get it going....How do I stop it since I am using the pull start? With the choke? Thanks VT MT
 

WillyBWright

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Dec 29, 2003
Messages
8,200
Re: 1960 40hp johnson super seahorse?

Welcome to iboats.<br /><br />Oil won't harm a carb. Old gas will. The motor will probably run on 16:1. Should take care of that nasty mosquito problem, too. ;) <br /><br />If your motor wasn't originally setup as a remote control model, there should be a kill switch in the front under the hood latch. But you can always choke a motor to death to kill it. Makes it awfully hard to start the next time, though. The motor would automatically be flooded unless it had a long time to sit...like hours or days.<br /><br />I know this sounds dumb, but make sure you have the fuel line connected in the right direction. That's how I got my boat cheap. The owner got it in exchange for some work and couldn't get it to run. I took a chance and bought it. When I got it home I noticed that the arrow on the primer bulb was pointing toward the tank. I turned the fuel line around and the motor ran. More likely you have some plug fouling. But try draining the carb and see what runs out.
 

fish393

Seaman Apprentice
Joined
Jun 9, 2004
Messages
36
Re: 1960 40hp johnson super seahorse?

Thanks for all the info I have had this for the last few years and may have a need for it. I found a control and a starter box on e-bay but it is for a 35 hp johnson 1957. Think this will do the job? thanks fish
 

jimmbo

Supreme Mariner
Joined
May 24, 2004
Messages
13,707
Re: 1960 40hp johnson super seahorse?

should work.
 

sslorraine79

Cadet
Joined
May 14, 2012
Messages
26
Re: 1960 40hp johnson super seahorse?

mayers marina!! yeah im from rochester, that guy has everything
 

sslorraine79

Cadet
Joined
May 14, 2012
Messages
26
Re: 1960 40hp johnson super seahorse?

cool... maybe i wanted to bring it back. just google searching like most people
 
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