When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
The air/fuel mixture screw is on the bottom of the carb - right in front of the float bowl. You should be able to adjust it w/o removing the carb if you have a short and skinny flathead screwdriver.