
7 
Switch action 
Fig.3 
CAUTION: 
• Before inserting the battery cartridge into the tool, 
always check to see that the switch trigger 
actuates properly and returns to the "OFF" 
position when released. 
To start the tool, simply pull the switch trigger. Tool 
speed is increased by increasing pressure on the switch 
trigger. Release the switch trigger to stop. 
Lighting up the front lamp 
Fig.4 
CAUTION: 
• Do not look in the light or see the source of light 
directly. 
Pull the switch trigger to light up the lamp. The lamp keeps 
on lighting while the switch trigger is being pulled. The 
lamp goes out 10 -15 seconds after releasing the trigger. 
 
NOTE: 
• Use a dry cloth to wipe the dirt off the lens of lamp. 
Be careful not to scratch the lens of lamp, or it 
may lower the illumination. 
Reversing switch action 
Fig.5 
CAUTION: 
• Always check the direction of rotation before 
operation. 
• Use the reversing switch only after the tool comes 
to a complete stop. Changing the direction of 
rotation before the tool stops may damage the tool. 
• When not operating the tool, always set the 
reversing switch lever to the neutral position. 
This tool has a reversing switch to change the direction 
of rotation. Depress the reversing switch lever from the 
A side for clockwise rotation or from the B side for 
counterclockwise rotation. 
When the reversing switch lever is in the neutral 
position, the switch trigger cannot be pulled. 
Speed change 
Fig.6 
CAUTION: 
• 
Always set the speed change lever fully to the 
correct position. If you operate the tool with the 
speed change lever positioned halfway between the 
"1" side and "2" side, the tool may be damaged. 
• Do not use the speed change lever while the tool 
is running. The tool may be damaged. 
To change the speed, first switch off the tool and then 
slide the speed change lever to the "2" side for high 
speed or "1" side for low speed. Be sure that the speed 
change lever is set to the correct position before 
operation. Use the right speed for your job. 
Adjusting the fastening torque 
Fig.7 
The fastening torque can be adjusted in 17 steps by 
turning the adjusting ring so that its graduations are 
aligned with the pointer on the tool body. The fastening 
torque is minimum when the number 1 is aligned with 
the pointer, and maximum when the marking is 
aligned with the pointer. 
The clutch will slip at various torque levels when set at 
the number 1 to 16. The clutch is designed not to slip at 
the marking. 
Before actual operation, drive a trial screw into your 
material or a piece of duplicate material to determine 
which torque level is required for a particular application. 
ASSEMBLY 
 
CAUTION: 
• Always be sure that the tool is switched off and the 
battery cartridge is removed before carrying out 
any work on the tool. 
Installing or removing driver bit or drill bit 
Fig.8 
Turn the sleeve counterclockwise to open the chuck 
jaws. Place the bit in the chuck as far as it will go. Turn 
the sleeve clockwise to tighten the chuck. 
To remove the bit, turn the sleeve counterclockwise. 
Hook 
Fig.9 
The hook is convenient for temporarily hanging the tool. 
This can be installed on either side of the tool. 
To install the hook, insert it into a groove in the tool 
housing on either side and then secure it with a screw. 
To remove, loosen the screw and then take it out. 
Installing bit holder (Optional accessory) 
Fig.10 
Fit the bit holder into the protrusion at the tool foot on 
either right or left side and secure it with a screw. 
When not using the driver bit, keep it in the bit holders. 
Bits 45 mm long can be kept there.