
5 
A battery short can cause a large current 
flow, overheating, possible burns and 
even a breakdown. 
6. Do not store the tool and battery cartridge in 
locations where the temperature may reach or 
exceed 50 ゚C (122 ゚F). 
7. Do not incinerate the battery cartridge even if 
it is severely damaged or is completely worn 
out. The battery cartridge can explode in a fire. 
8. Be careful not to drop or strike battery. 
9. Do not use dropped or struck battery. 
SAVE THESE INSTRUCTIONS. 
Tips for maintaining maximum battery life 
1. Charge the battery cartridge before 
completely discharged. 
Always stop tool operation and charge the 
battery cartridge when you notice less tool 
power. 
2. Never recharge a fully charged battery 
cartridge. 
Overcharging shortens the battery service life. 
3. Charge the battery cartridge with room 
temperature at 10 ゚C - 40 ゚C (50 ゚F - 104 ゚F). 
Let a hot battery cartridge cool down before 
charging it. 
FUNCTIONAL DESCRIPTION 
 
CAUTION: 
• Always be sure that the tool is switched off and the 
battery cartridge is removed before adjusting or 
checking function on the tool. 
Installing or removing battery cartridge 
Fig.1 
• Always switch off the tool before insertion or 
removal of the battery cartridge. 
• To remove the battery cartridge, withdraw it from 
the tool while sliding the button on the side of the 
cartridge. 
• To insert the battery cartridge, align the tongue on 
the battery cartridge with the groove in the housing 
and slip it into place. Always insert it all the way 
until it locks in place with a little click. If you can see 
the red part on the upper side of the button, it is not 
locked completely. Insert it fully until the red part 
cannot be seen. If not, it may accidentally fall out of 
the tool, causing injury to you or someone around 
you. 
• Do not use force when inserting the battery 
cartridge. If the cartridge does not slide in easily, it 
is not being inserted correctly. 
 
 
 
Switch action 
Fig.2 
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.3 
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.4 
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. 
 
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. 
Speed change 
Fig.5 
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. 
 
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.