Model number FD-20C.<br />It's a twin cylinder, single carb. <br />I need to know the adjustment of the lean/rich screw.<br />How many turns out?<br />Plus/minus what?<br />Thank you,
Low speed is in the 1 turn ballpark. High speed (if it has one) is 1/2 - 3/4 ballpark. The high speed needle would be on the bottom of the carb low on top.
