Apr. 1, 2015. TDK Corporation has announced that its Hong Kong-based HDD head manufacturing wholly owned subsidiary, SAE Magnetics (H.K.) Ltd.
You use a wrench to screw, or unscrew a bolt. A screwdriver is for screws. Either way you turn it left. Some bolts have reverse threads and would turn the other way to unbolt.
2. Lay the weed eater on a flat surface and turn it so the string spool is facing you. Grasp the spool with one hand and the string head that encloses it with the other. Rotate the spool counterclockwise to unscrew and separate it.