
5 
ENC004-1 
 
IMPORTANT SAFETY 
INSTRUCTIONS 
FOR BATTERY CARTRIDGE 
1. 
Before using battery cartridge, read all instructions 
and cautionary markings on (1) battery charger, (2) 
battery, and (3) product using battery. 
2. Do not disassemble battery cartridge. 
3. If operating time has become excessively 
shorter, stop operating immediately. It may 
result in a risk of overheating, possible burns 
and even an explosion. 
4. If electrolyte gets into your eyes, rinse them 
out with clear water and seek medical 
attention right away. It may result in loss of 
your eyesight. 
5. Always cover the battery terminals with the 
battery cover when the battery cartridge is not 
used. 
6. Do not short the battery cartridge: 
(1) Do not touch the terminals with any 
conductive material. 
(2) Avoid storing battery cartridge in a 
container with other metal objects such as 
nails, coins, etc. 
(3) Do not expose battery cartridge to water 
or rain. 
A battery short can cause a large current 
flow, overheating, possible burns and 
even a breakdown. 
7. Do not store the tool and battery cartridge in 
locations where the temperature may reach or 
exceed 50 ゚C (122 ゚F). 
8. 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. 
9. Be careful not to drop or strike 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. 
4. Charge the Nickel Metal Hydride battery 
cartridge when you do not use it for more than 
six months. 
 
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 pressing the buttons on both sides 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 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. 
 
Reversing switch action 
Fig.3 
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.4 
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.