'56 Sea King 25

[Southwind boater]

I have a Seaking 25hp, M#GG9023A, S#55x594090, that appears to be a ?56 model. I had it running about 5 yrs ago, although not well, and I am wanting get it running again. I haven?t tried to start it as I want to thoroughly check it and have a reliably motor. I took off the coil inspection cover and they are a bright blue color and look new. I know my Dad had it worked on in the ?90?s so they were probably replaced then. I?ve taken the float bowl off and its fairly clean in there although there is a solenoid on the lower part of the carb that has a deteriorated boot around the plunger. The lower unit doesn?t appear to have any cracks and over all it doesn?t look bad. I haven?t done a compression check, but other than that I figure I need a carb kit and an impeller, just to play it safe.
I checked the parts availability under Johnson and Evinrude and couldn?t find a carb kit or an impeller listed for a ?56 model so I?m wondering:
1. Is the info not accurate or do I have a motor that I can?t get parts for?
2. What is the solenoid on the carb and how important is the boot and is one available?
3. How hard is it to change an impeller and how do I do it? Can I just inspect it?
4. Should I clean up the carb as best I can and reassemple it and do a compression check to see where I?m at?

 

[samo_ott]

Re: '56 Sea King 25

Is it OMC built? If yes then you can get all the wearable parts for a '56 25hp. Carb kits, impeller, etc...

There is a thread at the top on how to awaken a sleeping outboard... read that...

Before you put any $$$ into it I would take the compression... if it's low, don't waste your time, find another project... or be prepared to do lotsa work...

The solenoid is for the electric choke. The boot is not critical to the functioning but it will make it last longer and better over time... dirt or water in there will shorten the life... It's like the boot on a cv joint in a car... it will run without it... But not for long!

Impellers are usually relatively easy to change... if you're mechanically inclined at all.

New coils are good. That will save you $50 or so... Can you not ask your dad what else he did to it?

Can you post a pic of the engine? Inside and out?

 

[Southwind boater]

Re: '56 Sea King 25

As far as I can tell it was made by Gale a division of OMC. On the compression test, I have 100 psi on both cylinders, which seems sufficient. I'll attempt to attach a couple of pics.

 

[F_R]

Re: '56 Sea King 25

As far as I can tell it was made by Gale a division of OMC. On the compression test, I have 100 psi on both cylinders, which seems sufficient. I'll attempt to attach a couple of pics.

You are correct, it is a Gale motor. In 1956, the Evinrude and Johnson versions were 30hp. In 1955, Gale was 22hp and J/E were 25hp. So, in a nutshell, what you have is a combination of the two, more resembling the 30hp with lower compression. Unless getting into hard parts like pistons or something, simply buy parts for a 1956 Johnson or Evinrude 30hp. All the common carburetor & tune-up & water pump parts are the same.

 

[Southwind boater]

Re: '56 Sea King 25

Considering the price of a newer outboard, it appears an investment of less than $100 for a carb kit and an impeller would be worth the risk. After installing the carb kit, how do I set the carb jets? Also where is the impeller and how do I find instructions on replacing it?