7 ENGLISHCAUTION: Always set the speed change leverfully to the correct position. If you operate thetool with the speed change lever positioned halfwaybetween the "1" side and "2" side, the tool may bedamaged.CAUTION: Do not use the speed change leverwhile the tool is running. The tool may be damaged.DisplayedNumberSpeed Torque Applicableoperation1 Low High Heavy load-ing operation2 High Low Light loadingoperationTo change the speed, switch off the tool first. Push thespeed change lever to display "2" for high speed or "1" forlow speed but high torque. Be sure that the speed changelever is set to the correct position before operation.If the tool speed is coming down extremely during theoperation with display "2", push the lever to display "1"and restart the operation.Selecting the action modeCAUTION: Always set the ring correctly toyour desired mode mark. If you operate the toolwith the ring positioned halfway between themode marks, the tool may be damaged.CAUTION: When you change the positionfrom " " to other modes, it may be a little dif-ficulty to slide the action mode changing ring. Inthis case, switch on and run the tool for a secondat the " " position, then stop the tool and slidethe ring to your desired position.1243► 1. Action mode changing ring 2. Adjusting ring3. Graduation 4. ArrowThis tool has three action modes.• Drilling mode (rotation only)• Hammer drilling mode (rotation withhammering)• Screwdriving mode (rotation with clutch)Select one mode suitable for your work. Turn theaction mode changing ring and align the mark that youselected with the arrow on the tool body.Adjusting the fastening torque1243► 1. Action mode changing ring 2. Adjusting ring3. Graduation 4. ArrowThe fastening torque can be adjusted in 21 levels byturning the adjusting ring. Align the graduations with thearrow on the tool body. You can get the minimum fas-tening torque at 1 and maximum torque at 21.Before actual operation, drive a trial screw into yourmaterial or a piece of duplicate material to determinewhich torque level is required for a particular applica-tion. The following shows the rough guide of the rela-tionship between the screw size and graduation.Graduation 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21Machine screw M4 M5 M6WoodscrewSoft wood(e.g. pine)– ɸ3.5 x 22 ɸ4.1x 38 –Hard wood(e.g. lauan)– ɸ3.5 x 22 ɸ4.1x 38 –