Using your Bosch GSB12V-300B22 hammer drill/driver is easy. First, charge the two 12V Max 2.0 Ah batteries using the included charger. Once charged, insert a battery into the drill. You can choose between the two-speed transmission - use the high-power setting at 0 - 460 rpm for tougher jobs and the high-speed setting at 1,750 rpm for faster work. Adjust the 20+1 clutch settings to get the right torque for your screwdriving tasks and avoid damaging fasteners. For drilling in masonry or brick, the hammer drilling function with 26,250 bpm works great. When working in dark areas, turn on the LED light. As for maintenance, keep the drill clean and dry. After use, remove the battery and store it in a cool, dry place. Check the three-jaw keyless chuck regularly for any signs of wear. If you notice any issues with the drill's performance, contact Bosch customer service.
