Carb for 1973 Johnson 20 HP

Joined
Nov 9, 2008
Messages
17
Would like to purchase a rebuilt carb for this motor or I will pay an expert to rebuild my carb.

Another ??? - What is the plastic deal over the center of the head that has
a spring on it and the spring is not connected to anything.
Thanks!!!

JW
 
Last edited:

tashasdaddy

Honorary Moderator Emeritus
Joined
Nov 11, 2005
Messages
51,019
Re: Carb for 1973 Johnson 20 HP

the only thing i see on the diagram, on the top center of the head is the thremostat housing, and cover. don't know if it would be plastic. a pictures would surely help.
 

F_R

Supreme Mariner
Joined
Jul 7, 2006
Messages
28,195
Re: Carb for 1973 Johnson 20 HP

He is talking about the recoil starter lockout. It prevents pulling the starter rope when the throttle is set too far toward "fast". There are actually two plastic parts involved. One may be missing???
 

samo_ott

Vice Admiral
Joined
Jun 18, 2006
Messages
5,125
Re: Carb for 1973 Johnson 20 HP

And as for rebuilding your carb, it is very easy. It will take you longer to remove and replace the carb then it will to rebuild it. and the carb kits are cheap. But if you still dont want to do it, take it to your local OMC dealer. And if you can remove the carb yourself it will be a lot easier and cheaper for you/them. If not, take the entire engine in.

BTW, my local OMC dealer does not work on engines older than '74. Im sure others vary but I would call first.
 

asdasc

Senior Chief Petty Officer
Joined
Aug 28, 2008
Messages
680
Re: Carb for 1973 Johnson 20 HP

That said, if you have the ability to get it off the motor, rebuilding it is even easier. It looks scary at first, but it is really easy.

Get a kit, print off the exploded view of the carb from a parts manuel, and a bucket of the carb cleaner at an Auto Parts store. You can have it all done in a couple relaxing hours one evening. In a pinch, you can do it all in less than an hour once you have done it a couple times.

One hint, if you are nervous about it, is to take a digital camera and take a few pictures from different angles every step of the way. It gives you good confidence that you can get everything back together again. I did it on my first one and only refferred to it once for the linkage assembly, but was a good boost to my confidence innitially.

Good luck!
 
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