Small Johnson Seahorse

[1kickpic]

What have I got here? 2 cylinder, 2 cycle, direct drive (always in forward gear on pull), ser # 656237, Mod. HD-25. would like to know: year? HP? and anything else you might have to offer. plan to use this as a kicker. Also need operating/maint. manual.

 

[Trent]

Re: Small Johnson Seahorse

2.5 HP<br />Made from 1946-1950

 

[1kickpic]

Re: Small Johnson Seahorse

thank you, trent...now where would be a good place to find the manual that relates to this motor? also, is the fuel mix 50 to 1, as usual; and is it water cooled? (i don't see any water intake vents on the lower unit).

 

[roscoe]

Re: Small Johnson Seahorse

Don't fire it up with 50:1. The fuel mix is either 24:1 or 16:1<br />So wait till you know for sure.<br />There are many here with a wealth of knowledge on these oldies.<br />They will be along shortly.

 

[seahorse5]

Re: Small Johnson Seahorse

You have one of the nicest running fishing motors ever made. It is watercooled and has a round rubber water pump impeller with a tab on it that is activated by an eccentric cam on the propshaft. I understand that Sierra makes these impellers as aftermarket parts. Contact the Antique Outboard Club for copies of the manual and more info.<br /><br /> http://www.aomci.org/aomc.htm

 

[1kickpic]

Re: Small Johnson Seahorse

thank you roscoe and seahorse, i'm working with information.

 

[seahorse5]

Re: Small Johnson Seahorse

The original fuelil mix was 16:1, a half pint of oil per gallon of gas. With today's better oils, 24:1 works well, but do not go leaner that that because there are no bearings in the motor, just bushings. If there is a lot of internal wear due to the age of the outboard, then you may find it idles better with the richer mix.

 

[1kickpic]

Re: Small Johnson Seahorse

i will go with the 24:1 mixture and see how that works. don't have a manual as yet, but took out the plugs; (2) J8J champions. found out that J4C or J6C were probably used in this model. Is there any significant difference in any of these plugs or can i just go and get a new pair of J8J's. maybe J8J replaced J4C/J6C? i suppose i'll go with the same gap as well, unless someone has better info. thanks.

 

[seahorse5]

Re: Small Johnson Seahorse

Originally the plugs were either J8J or J6J, either will work. I'm working from memory here, so go with the J8's. Set the gap to .025"

 

[1kickpic]

Re: Small Johnson Seahorse

thanks very much.