Using the DeWalt DCM849B is easy. First, attach the 7 - inch backing plate. You can hold the polisher by the front grip or the side handle, depending on your comfort. Turn on the polisher using the trigger, and adjust the speed with the dial according to the surface you're polishing. For example, use a lower speed for more delicate surfaces like car headlights and a higher speed for tougher jobs on fiberglass. When you're done, turn off the tool and unplug it if it's connected to a charger. To keep it in good condition, clean the polisher regularly. Wipe off any debris or polish residue from the backing plate and the body of the tool. Also, store it in a dry place. Make sure to check the motor and other parts periodically for any signs of wear or damage. If you notice anything wrong, don't use the tool and contact a professional for repair.
