Johnson Seahorse CD-10

[rTagster]

I just got one of these that has been sitting in a barn for an unknown time, i am unable to get it to run off of the gas, i can get it to run off of starter fluid for like 5 seconds.

I dont have alot of experience with small engines, just some basic stuff, i was wondering if there was anything i could do to get it run with an additive to the gas or something besides having to do a carb rebuild?

Any help would be great thanks!!

 

[Huron Angler]

Re: Johnson Seahorse CD-10

Try spraying some 24:1 fuel/oil mix(NEW fuel...not sure if you tried using old fuel) rather than the startng fluid. Ether is not good for the metal as it has no lubricating properties.

You could also mix in some Seafoam with the fuel to loosen any gummed up material in the carb. Rebuilding the carb would be the next step assuming spark and compression are good.

I have a CD-12 and it's my favorite motor

 

[rTagster]

Re: Johnson Seahorse CD-10

awesome thanks for your help, ill try that out.

 

[MushCreek]

Re: Johnson Seahorse CD-10

You do know it has to be run on a pressure tank? This will be a twin hose tank, and there is a button you have to press several times to prime it. Also, the cap has to be on tight. Odds are, the whole fuel system is shot, meaning you will have to clean and rebuild the carb, replace the fuel lines, and possibly rebuild the tank. All of this stuff is available, and fairly easy to do.

 

[BigB9000]

Re: Johnson Seahorse CD-10

Read this:

http://forums.iboats.com/showthread.php?t=158086

 

[1946Zephyr]

Re: Johnson Seahorse CD-10

Those are great motors. I've had a few. Yours is the first year of the 5.5hp, built in 1954. A great replacement of the older TN's and TD's (which also were great motors)

It's a definate issue, that you'll need to go completely through this motor, to ensure reliability and eliminate the risk of having any problems with it. The ignition system, water pump and lower unit are the other main areas that need servicing.

What I usually do, when I find a motor in this state, is I will pour a bunch of fuel mix (heavy with the oil) into the carb and turn the motor over real slow, so all the internal parts are good and lubed up. You'll see a huge difference on how nicely the motor turns, once you do this.

Take good care of this ol' bugger and you'll love running it.

 

[rTagster]

Re: Johnson Seahorse CD-10

ok, so thanks for all your help. Especially that article.

The situation i am in however is I have this motor on sort of a test trial period, if i like it than i'll buy it from the guy, i will absolutely tear into it and fix it up once its mine but i was hoping there was some way to just get it running to make sure its something i would want to push me around the lakes here around where i live.

I cannot for the life of me get this thing to run, i tore the bottom half of the carburetor off yesterday and sprayed it down with carb cleaner, i sprayed through what i thought was all the holes, when i tore it apart there was plenty of the new gas i pumped into it, so what i dont understand is why i cant get it to run at all, even if it needs some maintenance done on it to get it working i would think if the carb appears clean, it will fire up, and the compression is good than i should be able to get it to start at least a little bit. Is there something im doing wrong? The only thing i can get out of the engine is when i spray something into the carb, and i get like 3 seconds of it running for me. It doesnt seem like the gas is going into the engine at all, to be honest im not sure exactly how engines work, but logically it seems like i should get something.

Thanks for everyone that has helped thus far.

 

[rTagster]

Re: Johnson Seahorse CD-10

You do know it has to be run on a pressure tank? This will be a twin hose tank, and there is a button you have to press several times to prime it. Also, the cap has to be on tight. Odds are, the whole fuel system is shot, meaning you will have to clean and rebuild the carb, replace the fuel lines, and possibly rebuild the tank. All of this stuff is available, and fairly easy to do.

i have a pressurized tank, i can see the gas filling up the little glass filter at the bottom of the carburetor, and once its full the tank wont let me pump anymore. Would that mean i still have to rebuild the tank, fuel lines, and carb?

I took apart the carburetor and sprayed it down with carb cleaner, and everything seemed to be clear. The main gasket between the upper and lower section of the carburetor still seemed good so i put it back together for the time being.

I hate to ask such a newbie question, but after searching my cell phone contact list, i realize i know no one personally that knows anything about this sort of thing, but what goes into a carb rebuild? is that main gasket and just cleaning out the holes in the carburetor?

 

[rTagster]

Re: Johnson Seahorse CD-10

What I usually do, when I find a motor in this state, is I will pour a bunch of fuel mix (heavy with the oil) into the carb and turn the motor over real slow, so all the internal parts are good and lubed up. You'll see a huge difference on how nicely the motor turns, once you do this.

I'm going to try this today, see if it will at least start up for me. Where would you poor this into the carb? Just into the air intake?