Using the DeWalt 20V Max 14-Inch Foldable Cordless String Trimmer is a breeze. First, make sure you have the guard and handle properly attached. Then, turn on the trimmer using the power switch. You can adjust the speed according to your needs with the variable - speed trigger and the Hi/Lo speed - control switch. For wider areas, use the high - speed setting, and for more precise work or to save battery, go for the low - speed setting. When the line runs out, use the QuickLoad Spool to replace it quickly. As for maintenance, after each use, clean the trimmer to remove any grass or debris. Check the line regularly for wear and tear. Store the trimmer in a dry place, and when folding it, make sure the hinge is in good condition. Also, keep in mind that the trimmer is designed for normal yard use, so avoid using it on extremely tough or hard materials.
