Makita HP331D Instruction Manual

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8 ENGLISHSpeed change►Fig.6: 1. Speed change leverCAUTION: Always set the speed change leverfully to the correct position. If you operate the tool withthe speed change lever positioned halfway between the "1"side and "2" side, the tool may be damaged.CAUTION: Do not use the speed change leverwhile the tool is running. The tool may be damaged.Position ofspeedchange leverSpeed Torque Applicableoperation1 Low High Heavy load-ing operation2 High Low Light loadingoperationTo change the speed, switch off the tool first. Selectthe "2" side for high speed or "1" for low speed but hightorque. Be sure that the speed change lever is set to thecorrect position before operation.If the tool speed is coming down extremely during theoperation with "2", slide the lever to the "1" and restartthe 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.►Fig.7: 1. Action mode changing ring 2. Adjustingring 3. 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 torque►Fig.8: 1. Action mode changing ring 2. Adjustingring 3. Graduation 4. ArrowThe fastening torque can be adjusted in 18 steps by turning the adjusting ring. Align the graduations with the arrowon the tool body. You can get the minimum fastening torque at 1 and maximum torque at 18.Before actual operation, drive a trial screw into your material or a piece of duplicate material to determine whichtorque level is required for a particular application. The following shows the rough guide of the relationship betweenthe screw size and graduation.Graduation 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18Machine screw M4 M5 M6WoodscrewSoft wood(e.g. pine)– ɸ3.5 x 22 ɸ4.1x 38Hard wood(e.g. lauan)– ɸ3.5 x 22 –– ɸ4.1x 38ASSEMBLYCAUTION: Always be sure that the tool isswitched off and the battery cartridge is removedbefore carrying out any work on the tool.Installing or removing driver bit/drill bitOptional accessory►Fig.9: 1. Sleeve 2. Close 3. OpenTurn the sleeve counterclockwise to open the chuckjaws. Place the driver bit/drill bit in the chuck as faras it will go. Turn the sleeve clockwise to tighten thechuck. To remove the driver bit/drill bit, turn the sleevecounterclockwise.Installing hook►Fig.10: 1. Groove 2. Hook 3. ScrewThe hook is convenient for temporarily hanging the tool.This can be installed on either side of the tool. To installthe hook, insert it into a groove in the tool housing oneither side and then secure it with a screw. To remove,loosen the screw and then take it out.Installing driver bit holderOptional accessory►Fig.11: 1. Driver bit holder 2. Driver bitFit the driver bit holder into the protrusion at the tool footon either right or left side and secure it with a screw.When not using the driver bit, keep it in the driver bitholders. Driver bits 45 mm-long can be kept there.