motor information

[mraycii]

please help me discern the year and rating of the following Johnson outboard:<br /><br />Model 6R-720 SN# J3553917<br /><br />Thanks in advance for your help.

 

[OBJ]

Re: motor information

Welcome mrarcii!<br /><br />That is a 6hp Johnson made in 1972.<br /><br />Fuel mix is 50:1<br /><br />Plugs are Champion J6C set at .030.