New member, Old question?

monkeyman51

Recruit
Joined
Apr 7, 2006
Messages
3
I have received a Johnson OB 25hp from a friend.<br />Would like help in finding year of manufacture and correct oil/fuel mixture.<br />Please excuse me if I mixed serail number with model as I wrote them down without noting. Thanks in advance.<br />Model: (?) 25R73A<br />Serial:(?) E3785318
 

KaGee

Admiral
Joined
Aug 14, 2004
Messages
7,069
Re: New member, Old question?

Your answer is best found in the JohnnieRude forum.
 

ob

Admiral
Joined
Aug 16, 2002
Messages
6,992
Re: New member, Old question?

It's a 1973 model and mix is 50:1 using 87 octane gas and TCW3 oil.
 

BoatBuoy

Rear Admiral
Joined
May 29, 2004
Messages
4,856
Re: New member, Old question?

Correct sparkplug is Champion J4C gapped at .030.
 

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: New member, Old question?

Moving to Outboard Non-repair.
 
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