Model number?<br /><br />Your fuel mix is almost cetainly 50:1, Larry, but it would be best to confirm the year before taking that as gospel.<br /><br />Good luck.
Are you sure you can't find a model number on the outboard? I suspect JB is right on the 50 to 1, but you might look at the Suzuki outboard web site for contact info:<br /><br /> http://www.suzukimarine.com/contactus/index.php <br /><br />I have a 2000 5hp Suzuki and it is 100:1, but my serial number is considerably higher, so I suspect you have an older outboard?