My featerlite weedwacker will not stay running. When I apply the throttle, it cuts out. I think I need to adjust the card. Does anybody know which adj screws on the carb control air and gas? I think the carb is running lean. Which screw do I adjust? I don't have the manual, and the weed eater is just one year old. Thanks.

Before you make adjustments try draining the tank, add 1 cup fresh mixed gas and 1 oz of SeaFoam or other carb cleaner. Start the engine and try to keep it running until you burn most of this fuel. These carbs are about the size of your thumb and usually do not need adjusting after 1 year but they do crude up over the winter, especially with 2008 fuel in them.