Thought that one of the knowledgeable folks on this forum might have helped you by now. Did you call your local Honda dealer? They should be able to help you. Also, sometimes the owner's manual has the year of the motor on it. If you don't have the manual for your motor, try looking at the below link (but you'll need more to your serial number):<br /><br /> http://www.honda-marine.com/mar_pages/bf30.htm
