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n Test drive a screw in scrap material to determine if it is correct. n Adjust as necessary to increase or decrease the desired depth. DRIVING SCREWS See Figures 6 - 7. There are two two options for gripping the handle of the screwdriver, determined by operator comfort and working angle. The screwdriver has a variable speed switch for operator control of speed and torque limits. n Be sure the screwdriver is in the OFF position before connecting it to the power supply. n Check the direction of ro