4unsafely or incorrectly, you can sufferserious personal injury.1. Wear ear protectors with impact drills. Exposureto noise can cause hearing loss.2. Use auxiliary handles supplied with the tool.Loss of control can cause personal injury.3. Hold power tools by insulated gripping surfaceswhen performing an operation where the cuttingtool may contact hidden wiring or its own cord.Contact with a “live” wire will make exposed metalparts of the tool “live” and shock the operator.4. Always be sure you have a firm footing.Be sure no one is below when using the tool inhigh locations.5. Hold the tool firmly with both hands.6. Keep hands away from rotating parts.7. Do not leave the tool running. Operate the toolonly when hand-held.8. Do not touch the bit or the workpiece immedi-ately after operation; they may be extremely hotand could burn your skin.9. Some material contains chemicals which may betoxic. Take caution to prevent dust inhalationand skin contact. Follow material supplier safetydata.SAVE THESE INSTRUCTIONSWARNING:MISUSE or failure to follow the safetyrules stated in this instruction manualmay cause serious personal injury.SYMBOLSUSD302-1The followings show the symbols used for tool.V............................volts....................direct current.....................no load speed.../min....................revolutions or reciprocation perminute.....................number of blowIMPORTANT SAFETYINSTRUCTIONS FOR BATTERYCARTRIDGEENC007-11. Before using battery cartridge, read all instruc-tions and cautionary markings on (1) batterycharger, (2) battery, and (3) product using bat-tery.2. Do not disassemble battery cartridge.3. If operating time has become excessivelyshorter, stop operating immediately. It mayresult in a risk of overheating, possible burnsand even an explosion.4. If electrolyte gets into your eyes, rinse them outwith clear water and seek medical attention rightaway. It may result in loss of your eyesight.5. Do not short the battery cartridge:(1) Do not touch the terminals with any conduc-tive material.(2) Avoid storing battery cartridge in a con-tainer with other metal objects such as nails,coins, etc.(3) Do not expose battery cartridge to water orrain.A battery short can cause a large current flow,overheating, possible burns and even a break-down.6. Do not store the tool and battery cartridge inlocations where the temperature may reach orexceed 50°C (122°F).7. Do not incinerate the battery cartridge even if itis severely damaged or is completely worn out.The battery cartridge can explode in a fire.8. Be careful not to drop or strike battery.SAVE THESE INSTRUCTIONSTips for maintaining maximum batterylife1. Charge the battery cartridge before completelydischarged.Always stop tool operation and charge the bat-tery cartridge when you notice less tool power.2. Never recharge a fully charged battery cartridge.Overcharging shortens the battery service life.3. Charge the battery cartridge with room tempera-ture at 10°C - 40°C (50°F - 104°F). Let a hot bat-tery cartridge cool down before charging it.4. Charge the Lithium-ion battery cartridge whenyou do not use it for more than six months.