How to Fix Black+Decker 20V Cordless String Weed Trimmer Edger LSTE525 Won't Feed Line

Hot to Fix Won&Feed Line Black+Decker 20V Cordless String Weed Trimmer Edger LSTE525. Black & Decker has a beautiful design. Once you understand how it works, you can correct any problems. You might think the "Feed Line" button is connected to the spool somehow, but not so! All that button does is brake the motor! See for yourself: Next time you try the "Feed Line" button, notice how the motor suddenly stops. How can this be? Well, it is an incredibly clever, but simple design. Take off the spool and look inside. You can see a small rotating part with a locking pin sticking up a bit. When the housing suddenly stops, the inner spool, having momentum, keeps rotating a bit, causing that little mechanism to pivot. When it pivots, it unlocks the spool briefly. Look at the back of the spool. Notice the funny "whirl" pattern? When that little part pivots, it moves the locking pin towards the edge of the spool, which allows the spool to turn a short ways, releasing 3/4" of line. Then...