Home › Forum › Ask A Member › 1936 Johnson A-80 4.5 hp Spark Plugs? › Re: 1936 Johnson A-80 4.5 hp Spark Plugs?
November 8, 2017 at 11:04 pm
#67156
The Old Outboard Book Volume 3 shows a 5MJ originally gapped at .03, That plug in the same book was replaced with a D9J
So did some searching and found this:
http://www.sparkplug-crossreference.com … AMP_PN/D9J
http://www.richardsoutboardtools.com
classicomctools@gmail.com