I am looking at a Johnson 28 hp and I was hoping someone could determine the year for me.<br /><br />Model #: R x L - 12M <br /><br />Serial #: J2483111<br /><br />Thanks!
RXL-12M is a 1964 28hp johnson, the last year it was made. It displaces 35.7 cubic inches and makes it's power at 4500 rpms. Original plug is a Champion J4J (now J4C) gapped at 0.030. Mix is 24:1.<br />If you have _any_ other questions, don't hesitate to ask! I just finished a renovation on one of these.
