4loose easily, causing a breakdown or accident.Check tightness of screws carefully beforeoperation.7. In cold weather or when the tool has not beenused for a long time, let the tool warm up for awhile by operating it under no load. This willloosen up the lubrication. Without properwarm-up, hammering operation is difficult.8. Always be sure you have a firm footing.Be sure no one is below when using the tool inhigh locations.9. Hold the tool firmly with both hands.10. Keep hands away from moving parts.11. Do not leave the tool running. Operate the toolonly when hand-held.12. Do not point the tool at any one in the areawhen operating. The bit could fly out andinjure someone seriously.13. Do not touch the bit or parts close to the bitimmediately after operation; they may beextremely hot and could burn your skin.14. Do not operate the tool at no-loadunnecessarily.15. Some material contains chemicals which maybe toxic. Take caution to prevent dustinhalation and skin contact. Follow materialsupplier safety data.SAVE THESE INSTRUCTIONS.WARNING:MISUSE or failure to follow the safety rules stated inthis instruction manual may cause serious personalinjury. USD203-2SymbolsThe followings show the symbols used for tool.・ volts・ amperes・ hertz・ alternating current・ Class II Construction・ revolutions or reciprocation per minute・ number of blowFUNCTIONAL DESCRIPTIONCAUTION:• Always be sure that the tool is switched off and unpluggedbefore adjusting or checking function on the tool.Switch actionONOFF1009947CAUTION:• Before plugging in the tool, always check to seethat the tool is switched off.• Switch can be locked in "ON" position for ease ofoperator comfort during extended use. Applycaution when locking tool in "ON" position andmaintain firm grasp on tool.To start the tool, push the switch lever "ON (I)" on the leftside of the tool. To stop the tool, push the switch lever"OFF (O)" on the right side of the tool.Speed change1009955The blows per minute can be adjusted just by turning theadjusting dial. This can be done even while the tool isrunning. The dial is marked 1 (lowest speed) to 5 (fullspeed).Refer to the table below for the relationship between thenumber settings on the adjusting dial and the blows perminute.Number on adjusting dial Blows per minute543211,9001,7001,4501,2009500099561. Adjusting dial1. Switch lever