[. . . ] Do not use tool while tired or under the influence of drugs, alcohol, or medication. A moment of inattention while operating power tools may result in serious personal injury. Double insulated tools are equipped with a polarized plug (one blade is wider than the other. Double insulation eliminates the need for the three wire grounded power cord and grounded power supply system. [. . . ] An undersized cord will cause a drop in line voltage resulting in loss of power and overheating. Table 1 shows the correct size to use depending on cord length and nameplate ampere rating. DO NOT let comfort or familiarity with product (gained from repeated use) replace strict adherence to hammer safety rules. If you use this tool unsafely or incorrectly, you can suffer serious personal injury. Hold tools by insulated gripping surfaces when performing an operation where the cutting tool may contact hidden wiring or its own cord. Contact with a "live" wire will make exposed metal parts of the tool "live" and shock the operator. it is also highly recommended that you wear a dust mask and thickly padded gloves. In cold weather or when the tool has not been used for a long time, let the tool warm up for a while by operating it under no load. Do not touch the bit or parts close to the bit immediately after operation; they may be extremely hot and could burn your skin. WARNING: MISUSE or failure to follow the safety rules stated in this instruction manual may cause serious personal injury. Switch can be locked in "ON" position for ease of operator comfort during extended use. apply caution when locking tool in "ON" position and maintain firm grasp on tool. To start the tool, push the switch lever on the left side of the tool. Number of blow The blows per minute can be adjusted just by turning the adjusting dial. Refer to the table below for the relationship between the number settings on the adjusting dial and the blows per minute. CAUTION: Always be sure that the tool is switched off and unplugged before adjusting or checking function on the tool. CAUTION: The speed adjusting dial can be turned only as far as 5 and back to 1. Do not force it past 5 or 1, or the speed adjusting function may no longer work. CAUTION: Always be sure that the tool is switched off and unplugged before carrying out any work on the tool. To remove the bit, pull the tool holder cover down all the way and pull the bit out. The side handle can be swung 360° on the vertical and secured at any desired position. It also secures at eight different positions back and forth on the horizontal. [. . . ] Should any trouble develop during this one year period, return the COMPLETE tool, freight prepaid, to one of Makita's Factory or Authorized Service Centers. If inspection shows the trouble is caused by defective workmanship or material, Makita will repair (or at our option, replace) without charge. This Warranty does not apply where: · repairs have been made or attempted by others: · Repairs are required because of normal wear and tear: · This Warranty gives you specific legal rights, and you may also have other rights which vary from state to state. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. [. . . ]