Small Engines (Lawn Mowers, etc.): Jacobson Imperial Pins, adjustment screws, fuel mixture

Question
What does each pin do on the carb? and where am i supposed to set them? thenk you

Answer
I am assuming that you are referring to the fuel mixture adjustment screws on your Jacobson Chain Saw.  The screw closest to the cylinder is your low speed fuel mixture adjustment.  Adjust this screw until your saw idles smoothly.  The screw closest to the air filter is the high speed adjustment screw.  Adjust this screw with the saw running at full throttle.  Remember to be careful around a moving chain.