
5 
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 installing or 
removing of the battery cartridge. 
• 
To remove the battery cartridge, slide it from the tool 
while sliding the button on the front of the cartridge. 
• To install 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 indicator on the upper side of the button, it is 
not locked completely. Install it fully until the red 
indicator 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 installing the battery 
cartridge. If the cartridge does not slide in easily, it 
is not being inserted correctly. 
Battery protection system (Lithium-ion 
battery with star marking) 
Fig.2 
Lithium-ion batteries with a star marking are equipped 
with a protection system. This system automatically cuts 
off power to the tool to extend battery life. 
The tool will automatically stop during operation if the tool 
and/or battery are placed under one of the following 
conditions: 
• Overloaded: 
The tool is operated in a manner that causes 
it to draw an abnormally high current. 
In this situation, release the trigger switch on 
the tool and stop the application that caused 
the tool to become overloaded. Then pull the 
trigger switch again to restart. 
If the tool does not start, the battery is 
overheated. In this situation, let the battery 
cool before pulling the trigger switch again. 
• Low battery voltage: 
The remaining battery capacity is too low and 
the tool will not operate. In this situation, 
remove and recharge the battery. 
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 light automatically goes out 10 - 15 seconds after the 
switch trigger is released. 
 
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 
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. 
Characteristics of Cordless Oil-impulse Driver 
The Makita Cordless Oil-impulse Driver is a hydraulically 
operated impact tool using oil viscosity to produce 
impacts. Since oil viscosity changes with the temperature, 
be aware of the following two points when operating the 
tool. 
1. Avoid using the tool below -5 degrees of 
temperature. When the tool temperature goes 
down below the degrees, this may cause damage 
to the motor of tool due to poor impulse. 
2. When the tool becomes too hot, it may take longer 
to set screws 
3. The tool can overheat, causing a failure or hand 
burn if you operate it continuously for long hours. 
Let the tool cool off for more than 30 minutes 
before changing batteries during a long, 
continuous job.