422. Use only accessories that are recom-mended by the manufacturer for yourmodel. Accessories that may be suitable forone tool, may become hazardous when usedon another tool.SERVICE23. Tool service must be performed only byqualified repair personnel. Service or main-tenance performed by unqualified personnelcould result in a risk of injury.24. When servicing a tool, use only identicalreplacement parts. Follow instructions inthe Maintenance section of this manual.Use of unauthorized parts or failure to followMaintenance instructions may create a risk ofelectric shock or injury.USE PROPER EXTENSION CORD: Make sure your extension cord is in good condition.When using an extension cord, be sure to use one heavy enough to carry the current yourproduct will draw. An undersized cord will cause a drop in line voltage resulting in loss ofpower and overheating. Table 1 shows the correct size to use depending on cord length andnameplate ampere rating. If in doubt, use the next heavier gage. The smaller the gage num-ber, the heavier the cord.SPECIFIC SAFETY RULES USB002-2DO NOT let comfort or familiarity with product (gained fromrepeated use) replace strict adherence to hammer drill safetyrules. If you use this tool unsafely or incorrectly, you can sufferserious personal injury.1. Hold tools by insulated gripping surfaceswhen performing an operation where thecutting tool may contact hidden wiring orits own cord. Contact with a “live” wire willmake exposed metal parts of the tool “live”and shock the operator.2. Always be sure you have a firm footing. Besure no one is below when using the tool inhigh locations.3. Hold the tool firmly with both hands.Always use the side grip.4. Keep hands away from rotating parts.Table 1: Minimum gage for cordAmpere Rating Volts Total length of cord in feet120 V 25 ft. 50 ft. 100 ft. 150 ft.More Than Not More Than AWG0 6 18 16 16 146 10 18 16 14 1210 12 16 16 14 1212 16 14 12 Not Recommended