What year is my 3 hp Johnson? Model JW21E

alswager

Recruit
Joined
Jul 21, 2003
Messages
1
Would someone be kind enough to tell me what year Johnson 3hp motor I have? Model JW21E. Serial E2639271 I think it is mid 60's. Also - the plate on the motor says to use a J4J plug - but all the shops say to use J6C. So which is right? And does it matter much? Thanks .
 

Bear

Lieutenant Commander
Joined
Mar 1, 2001
Messages
1,627
Re: What year is my 3 hp Johnson? Model JW21E

JW-21 Johnson 1966<br />J4J plug for 1966 fuel and oil.<br />J6C for todays fuel and oil. I guess :)
 

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: What year is my 3 hp Johnson? Model JW21E

I would go for the J4C Champion.
 
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