[. . . ] Insert the bit into the retainer hole (9) and turn it by hand so it can be correctly aligned. Then, push the bit as far as it will go and lock it by pushing the stopper shaft to the opposite side. [. . . ] Turn the retainer ring counterclockwise until the hole (10) is positioned at the right side. To remove the drill bit, turn the retainer ring clockwise while pushing the retainer lock button (11) until the small hole (10) is positioned at the bottom. Insert the drill bit into the taper shank adapter and strike the tip of drill bit with wooden hammer. To remove the drill bit, place the drill bit on soft material such as wood or plastic. Then, insert the cotter (8) into the hole of adapter and strike it with a hammer. To drill the desired depth, adjust the depth stopper so that the measure from the end of it to the tip of bit can be equal to the desired depth. This work should be carried out quickly and expertly by any RYOBI service shops, using genuine RYOBI service parts. IMPORTANT The life time of the carbon brushes depends on the usage and environmental conditions. Failure to carry out the maintenance work or failure to use original RYOBI maintenance service parts may cause malfunction of the machine and this will invalidate your warranty. In this case, sound insulation and hearing protection measures must be taken by the operator. För att borra till önskat djup, ställ in djupstopparen så att avståndet till spetsen på borren motsvararar det önskade djupet. DECLARATION OF CONFORMITY We declare under our sole responsibility that this product is in conformity with the following standards or standardized documents. [. . . ] För att borra till önskat djup, ställ in djupstopparen så att avståndet till spetsen på borren motsvararar det önskade djupet. DECLARATION OF CONFORMITY We declare under our sole responsibility that this product is in conformity with the following standards or standardized documents. [. . . ]