Makita BJR141 Instruction Manual - Important Safety

5

IMPORTANT SAFETY 

INSTRUCTIONS

ENC007-7

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. 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.

6. Do not store the tool and battery cartridge in 

locations where the temperature may reach or 

exceed 50°C (122°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 a damaged 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°C - 40°C (50°F - 104°F). Let a hot 

battery cartridge cool down before charging it.

4. Charge the battery cartridge once in every six 

months if you do not use it for a long period of 

time.

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.

Adjusting the shoe (Fig. 3)

When the blade loses its cutting efficiency in one place 

along its cutting edge, reposition the shoe to utilize a 

sharp, unused portion of its cutting edge. This will help to 

lengthen the life of the blade. To reposition the shoe, 

loosen the lever counterclockwise and slide the shoe 

forward or back to the desired position. Then tighten the 

lever clockwise to firmly secure the shoe.

Switch action (Fig. 4)

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.

• When not operating the tool, depress the lock-off 

button from A side to lock the switch trigger in the OFF 

position.

To prevent the switch trigger from accidentally pulled, the 

lock-off button is provided.

To start the tool, depress the lock-off button from B side 

and pull the switch trigger.