Hi! My name is Matthew Christian from Tampa, Florida and on behalf of Expert Village, today I would like to talk to you about how to properly use and maintain a high limb chain saw. Most high limb chain saws or power pruners or pull saws that are gas powered, have a throttle control. It is usually somewhere close by where you are holding the unit. The throttle control is variable so the more you pull the throttle control or the more you depress the trigger, the faster the engine speed. This is pretty handy when you are trying to cut a limb and when you first start cutting a limb, you might have it on high speed to get through but then as you get towards the end just before it cuts through, you might slow down a little bit to get control to cut; give yourself plenty of time to get out of the way.