Generally, an object will end up in the disposal where they do not belong and must be removed. If the object is steel or iron, you can use a telescoping extraction tool that has a magnet on the tip to safely remove the item. However, you may need some creativity if the object is not magnet worthy such as coins. Duct tape that is rolled up onto the end of a pencil might help you grab it, or even a piece of chewing gum. Another option is the old chopstick method using two butter knives can also be very effective. Please remember none of these improvised techniques should ever be attempted before checking the power is off.
Sometimes the object cannot be seen or perhaps it is jammed between the grinding mechanism and the side of the disposal. In this case, you will need to turn or "spin" the grinding mechanism by hand because the motor is not strong enough to do it by itself. Nearly all the newer disposals have a hex head slot directly under the center of the unit. To see it you will need to use your flashlight again to look underneath for the opening. By inserting the correctly sized Allen head wrench into this hole, you can gently turn the disposal's mechanism back and forth to free the blockage. Check the chamber again for any loose material. You may have to repeat this step several times to get the object loose.
If your disposal does not have the hex head slot underneath, you will need to use other options to achieve to free the mechanism. A piece of wood such as a broom handle or a 1'' X 2'' board will do the job. Just insert from the top into the chamber and push it against the grinding arms to loosen the mechanism. Try to be patient and work from both directions until the mechanism spins freely. Do not try to put a wrench on the exposed nut in the middle of the chamber because he holds everything together and loosening it may cause a much larger problem than you already have.
JC Mims has spent a lifetime in the construction industry and is an avid DIY'r. You can learn more about garbage disposals [http://bestgarbagedisposalreviews.net] and find product reviews of popular brands and models like the Insinkerator Evolution