Black & Decker trimmers use battery packs to provide power for turning the trimmer head and cutting line. On some models, the battery pack is integral and charging is accomplished with the use of a wall-mounted cradle and power cord. The trimmer is placed into the cradle and then rotated slightly to lock it in place. Once the power cord is connected to an outlet, a LED light indicates that the trimmer is properly positioned and is charging. Other models feature a removable battery pack that is placed on a charger. A light will indicate when the battery is charged and the trimmer can be removed from the charger for use.
It is important to use proper safety equipment and dress properly when operating a Black & Decker trimmer. Safety glasses should be worn and gloves may be a consideration for some to help prevent blisters. Long pants and closed-toe shoes should be worn to reduce the risk of injury from flying debris. The safety guard should remain in the proper position while operating the trimmer. It is also important to be aware of your surroundings and keep children and pets out of the trimming area.
The Black & Decker trimmer uses .065-inch diameter line, and only line of this diameter should be used. The trimmer line is loaded on a spool that is accessed by removing the hub or spool cap on the trimmer head. The spool can be pulled from the trimmer head and replaced with a pre-wound spool, or new line can be wound on the spool. Line that will not feed because it has become twisted or crossed on the spool is also corrected by removing the spool from the trimmer head.
Basic trimming is performed by holding the trigger throttle with one hand and the forward assist or D-ring with the other hand. A side-to-side sweeping motion will produce good results; keep in mind that the trimmer line should not be forced into the grass and small amounts of grass should be removed with each pass. The edger feature of the trimmer is used by rotating the trimmer head so the head and line are vertical instead of horizontal. The line is guided along hard surface edges such as driveways and walks as well as grass edges along landscape areas.