— 7 —III. OPERATIONSwitch and Forward / Reverselever Operation(Forward ( ), Switch lock, Reverse ( ))CAUTION: Do not operate Forward/Reverselever until the chuck comes to a com-plete stop. Shifting during rotation ofthe chuck may damage the tool.Forward Rotation Switch Operation1. For forward rotation, set the lever to forward.2. Depress the trigger switch slightly to start thetool slowly.3. The speed increases with the amount ofdepression of the trigger for efficient tighteningof screws and drilling. The brake operates andthe chuck stops immediately when the triggeris released.4. After use, set the lever to its center position(switch lock).Reverse Rotation Switch Operation1. For reverse rotation, set the lever to reverse.Check the direction of rotation before use.2. Depress the trigger switch slightly to start thetool slowly.3. After use, set the lever to its center position(switch lock).Speed SelectionChoose a low or high speed to suit the use.CAUTION: Check the speed selector switchbefore use.Clutch Torque SettingAdjust the torque to one of the 18 possible set-tings or “ ” position to the job.CAUTION: Test the setting before actual opera-tion. Set the scale at this mark ( ).(Fig. 7)Note: When the brake operates, a braking soundmay be heard.This sound indicates engagement of the bitlock.CAUTION: • To eliminate excessive tempera-ture increase of the tool surface,do not operate the tool continu-ously using two or more batterypacks.Tool needs cool off time beforeswitching to another pack.• Do not close up vent holes onbody sides of the body duringoperation.Otherwise, the machine function isadversely affected to cause a fail-ure• Do NOT strain the tool(motor).This may cause damage to theunit.• Use the machine in such a way asto prevent the air from the bodyvent holes from blowing directlyonto your skin. Otherwise, youmay get burnt.• When operating with a Ni-MH bat-tery pack, make sure the place iswell-ventilated.For Appropriate use of Battery packNi-MH Battery pack (EY9200/EY9201/EY9230/EY9231)• Charge the Ni-MH battery fully before storagein order to ensure a longer service life.• The ambient temperature range is between0°C (32°F) and 40°C (104°F).If the batterypack is used when the battery temperature isbelow 0°C (32°F), the tool may fail to functionproperly. In that case, charge the bat¦tery untilcharging is completed for appropriate function-ing of the battery.• When battery pack is not in use, keep it awayfrom other metal objects like: paper clips,coins, keys, nails, screws, or other small metalobjects that can make a connection from oneterminal to another.Shorting the battery terminals together maycause sparks, burns or a fire.• When operating with a Ni-MH battery pack,make sure the place is well-ventilated.Ni-Cd Battery pack(EY9106/EY9136)• Nickel cadmium battery pack requires a“BREAK-IN PERIOD” to reach maximum oper-ating capacity. The “BREAK-IN PERIOD” isaccomplished during normal usage during thefirst 6-8 charge and discharge cycles of thebattery pack.After the “BREAK-IN PERIOD” is completed,the battery pack will maintain maximum operat-ing capacity throughout the normal life of thebattery pack.Battery Pack LifeThe rechargeable batteries have a limited life. If theoperation time becomes extremely short afterrecharging, replace the battery pack with a new one.Note: Use under extremely hot or cold conditionswill reduce operating capacity per charge.