Hi! My name is Matthew Christian from Tampa, Florida and on behalf of Expert Village, today I would like to talk to you about the proper use and maintenance of a leaf blower. On most two cycled engines like the one on this leaf blower, there are some adjustments. After a period of time, the machine may not be running as well as it used to. There are a few settings here that we could adjust to try and get the machine to run the way it did when it was new. Some of the settings are one, is a idle screw and it's right here. Adjusting this screw will set the speed at which the machine idles. Two other screws; one is an idle air mixture and a mixture or a running mixture control. Adjusting these two screws will change the way the machine runs at idle or at high speed. It takes a little bit of know how to find the right setting on these so I don't suggest that you play with these unless you know what you are doing. But if your machine is not running properly, you might try playing with these screw adjustments here to get the machine to run again properly.