20 hp johnson sea horse help

[Eska3.0]

Hey can any of you point me in thr direction of info for fuel mix and leg oil for this outboard? Will 90 weight be sufficient for the leg oil?

 

[Daviet]

Re: 20 hp johnson sea horse help

What year is it?
Use a marine 80/90 weight oil in the lower unit, make sure to replace the seal washers on the vent/drain screws.
Depending on the year , most likely you will use a 50:1 fuel mix.

 

[Eska3.0]

Re: 20 hp johnson sea horse help

1965

 

[Eska3.0]

Re: 20 hp johnson sea horse help

And thank you for the response. Do you think I can find the seals without ordering them online??

 

[Daviet]

Re: 20 hp johnson sea horse help

What is your model number?
I think 1965 was the first year that used a 50:1 ratio, many still used a 24:1 for several years after that date. I am sure others will chime in with more comments.
Do you have a dealer close, or a napa store, they can get them for you without having to pay freight. You might as well get enough for several oil changes so you have them on hand.
I think the OEM number is 311598, or the sierra number is 184248, double check the numbers before ordering.

 

[capt.ron18@yahoo.com]

hello, new here, have a question about a spark issue on 1971 sea horse 20 hp. non electric start. i have no spark, all components look visually good. pulled flywheel. what is next step?

 

[capt.ron18@yahoo.com]

20r71s

 

[capt.ron18@yahoo.com]

model#20r71s

 

[Michawilden]

With no spark at all I would first look into the kill circuit. If this is faulty you wont get spark. Second are the points. Clean them and set them to 0.02 inch.

 

[GA_Boater]

hello, new here, have a question about a spark issue on 1971 sea horse 20 hp. non electric start. i have no spark, all components look visually good. pulled flywheel. what is next step?

capt.ron18@yahoo.com

The next step is starting a new topic all your own. Read the Help Tip on top of the page. Thanks.

Closed.