Basically, when you put the motor together, the elevation slider will have one area near the front (closer to the dish than to the mount connecting it all to the roof) that you can see through because there won't be any metal blocking the line of sight to see stuff through the slider like a window sort of... near that open area is some sort of red marking that may be difficult for you to see, especially, if like me, you are color blind. It is there. Use it. Also, be sure that you have both the elevation and declination set. If you have no idea what a declination is, refer to your manual.