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Side handle Loosen Tighten Fig. 6 To attach a depth gauge on the side handle, insert the gauge into the U-shaped groove on the side handle, adjust the position of the depth gauge in accordance with the desired depth of the hole, and firmly tighten the side handle grip. (Fig. 7) Side handle Loosen Tighten Depth gauge Fig. 7 8. IMPACT to ROTATION changeover (Fig. 8) Shift the change lever between the right and left positions to switch easily between IMPACT (rotation and impact) and ROTATION (rotat