MAKITA DGA468 (01) PDF Document

The specifications for the MAKITA DGA468 Cordless Angle Grinder are as follows:

Caution: Always switch off the tool before installing or removing of the battery cartridge.

1. To remove the battery cartridge, slide it from the tool while sliding the button on the front of the cartridge.
2. To install the battery cartridge, align the tongue on the battery cartridge with the groove in the housing and slip it into place.
3. 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.

Caution: Always install the battery cartridge 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 install the battery cartridge forcibly. If the cartridge does not slide in easily, it is not being inserted correctly.

When you turn the tool on, the battery indicator shows the remaining battery capacity.

Note: Depending on the conditions of use and the ambient temperature, the indication may differ slightly from the actual capacity.

The tool is equipped with a tool/battery protection system. This system automatically cuts off power to the motor to extend tool and battery life. The tool will automatically stop during operation if the tool or battery is placed under one of the following conditions:

• Overload protection: When the tool is operated in a manner that causes it to draw an abnormally high current, the tool automatically stops without any indication. In this situation, turn the tool off and stop the application that caused the tool to become overloaded. Then turn the tool on to restart.
• Overheat protection: When the tool is overheated, the tool stops automatically and the battery indicator shows the following state (all indicators blinking). In this situation, let the tool cool before turning the tool on again. If the tool does not start, the battery may be overheated. In this situation, let the battery cool before starting the tool again.
• Overdischarge protection: When the battery capacity is not enough, the tool stops automatically. In this case, remove the battery from the tool and charge the battery.
• Releasing protection lock: When the protection system works repeatedly, the tool is locked and the battery indicator shows the locked state. In this situation, the tool does not start even if turning the tool off and on. To release the protection lock, remove the battery, set it to the battery charger and wait until the charging finishes.

Press the shaft lock to prevent spindle rotation when installing or removing accessories.

Notice: Never actuate the shaft lock when the spindle is moving. The tool may be damaged.

To prevent the switch lever from being accidentally pulled, a lock-off lever is provided.

1. To start the tool, pull the lock-off lever toward the operator and then pull the switch lever.
2. To stop the tool, release the switch lever.

Caution: Before installing the battery cartridge into the tool, always check to see that the switch lever actuates properly and returns to the “OFF” position when released. Do not pull the switch lever hard without pulling the lock-off lever. This can cause switch breakage. NEVER tape down or defeat purpose and function of lock-off lever.

The rotation speed of the tool can be changed by turning the speed adjusting dial. The table below shows the number on the dial and the corresponding rotation speed.

Notice: If the tool is operated continuously at low speed for a long time, the motor will get overloaded, resulting in tool malfunction. When changing the speed dial from “5” to “1”, turn the dial counterclockwise. Do not turn the dial clockwise forcibly.

This tool has “high speed mode” and “high torque mode”. It automatically changes operation mode depending on the work load. When the mode indicator lights up during operation, the tool is in high torque mode.

Even if installing the battery cartridge while pulling the switch lever, the tool does not start. To start the tool, first release the switch lever. Then pull the lock-off lever, and pull the switch lever.

The tool electronically detects situations where the wheel or accessory may be at risk to be bound. In the situation, the tool is automatically shut off to prevent further rotation of the spindle (it does not prevent kickback). To restart the tool, switch off the tool first, remove the cause of sudden drop in the rotation speed, and then turn the tool on.

Yes, the soft start feature reduces starting reaction.

Yes, the electric brake is activated after the tool is switched off. The brake does not work when the power supply is shut down, such as the battery is removed accidentally, with the switch still on.

Screw the side grip securely on the position of the tool as shown in the figure in the manual.

Caution: Always be sure that the side grip is installed securely before operation.

Warning: When using a depressed center wheel, flap disc, flex wheel or wire wheel brush, the wheel guard must be fitted on the tool so that the closed side of the guard always points toward the operator. When using an abrasive cut-off/diamond wheel, be sure to use only the special wheel guard designed for use with cut-off wheels.

For tool with locking screw type wheel guard:

1. Mount the wheel guard with the protrusions on the wheel guard band aligned with the notches on the bearing box.
2. Rotate the wheel guard to such an angle that it can protect the operator according to work.
3. Be sure to tighten the screw securely.
4. To remove wheel guard, follow the installation procedure in reverse.

For tool with clamp lever type wheel guard:

1. Loosen the screw, and then pull the lever in the direction of the arrow.
2. Mount the wheel guard with the protrusions on the wheel guard band aligned with the notches on the bearing box.
3. Rotate the wheel guard to such an angle that it can protect the operator according to work.
4. Pull the lever in direction of the arrow. Then tighten the wheel guard with fastening the screw. Be sure to tighten the screw securely. The setting angle of the wheel guard can be adjusted with the lever.
5. To remove wheel guard, follow the installation procedure in reverse.

1. Mount the inner flange onto the spindle. Make sure to fit the dented part of the inner flange onto the straight part at the bottom of the spindle.
2. Fit the depressed center wheel / flap disc on the inner flange and screw the lock nut onto the spindle.
3. To tighten the lock nut, press the shaft lock firmly so that the spindle cannot revolve, then use the lock nut wrench and securely tighten clockwise.
4. To remove the wheel, follow the installation procedure in reverse.

Caution: Make sure that the mounting part of the inner flange fits into the inner diameter of the depressed center wheel / flap disc perfectly. Mounting the inner flange on the wrong side may result in the dangerous vibration.

Follow instructions for depressed center wheel but also use back up pad over wheel. See order of assembly on accessories page in the manual.

Warning: Always use supplied guard when flex wheel is on tool. Wheel can shatter during use and guard helps to reduce chances of personal injury.

1. Mount the rubber pad onto the spindle.
2. Fit the disc on the rubber pad and screw the sanding lock nut onto the spindle.
3. Hold the spindle with the shaft lock, and securely tighten the sanding lock nut clockwise with the lock nut wrench.
4. To remove the disc, follow the installation procedure in reverse.

To avoid dusty environment caused by masonry cutting, use a dust collecting wheel guard and a vacuum cleaner. Refer to the instruction manual attached to the dust collecting wheel guard for assembling and using it.

Turn the tool on and then apply the wheel or disc to the workpiece. In general, keep the edge of the wheel or disc at an angle of about 15° to the workpiece surface. During the break-in period with a new wheel, do not work the grinder in forward direction or it may cut into the workpiece. Once the edge of the wheel has been rounded off by use, the wheel may be worked in both forward and backward direction.

Caution: Never switch on the tool when it is in contact with the workpiece, it may cause an injury to operator. Always wear safety goggles or a face shield during operation. After operation, always switch off the tool and wait until the wheel has come to a complete stop before putting the tool down.

When using an abrasive cut-off / diamond wheel, be sure to use only the special wheel guard designed for use with cut-off wheels. NEVER use cut-off wheel for side grinding. Do not “jam” the wheel or apply excessive pressure.

Installation: Mount the inner flange, abrasive cut-off wheel / diamond wheel, and lock nut onto the spindle. The direction for mounting the lock nut and the inner flange varies by wheel type and thickness.

Remove the battery cartridge and place the tool upside down allowing easy access to spindle. Remove any accessories on spindle. Thread wire cup brush onto spindle and tighten with supplied wrench.

Caution: Check operation of brush by running tool with no load, insuring that no one is in front of or in line with brush. Do not use brush that is damaged.

Remove the battery cartridge and place the tool upside down allowing easy access to spindle. Remove any accessories on spindle. Thread wire wheel brush onto spindle and tighten with the wrenches.

Caution: Check operation of wire wheel brush by running tool with no load, insuring that no one is in front of or in line with the wire wheel brush. ALWAYS use guard with wire wheel brushes, assuring diameter of wheel fits inside guard.

The wireless activation function enables clean and comfortable operation. By connecting a supported vacuum cleaner to the tool, you can run the vacuum cleaner automatically along with the switch operation of the tool.

1. Open the lid on the tool.
2. Insert the wireless unit to the slot and then close the lid. When inserting, align the projections with the recessed portions on the slot.
3. When removing the wireless unit, open the lid slowly. The hooks on the back of the lid will lift the wireless unit as you pull up the lid.

Notice: Clean the dust and dirt on the tool before installing the wireless unit. To prevent malfunction caused by static, touch a static discharging material before picking up the wireless unit.

Note: A Makita vacuum cleaner supporting the wireless activation function is required.

1. Install the batteries to the vacuum cleaner and the tool.
2. Set the stand-by switch on the vacuum cleaner to “AUTO”.
3. Press the wireless activation button on the vacuum cleaner for 3 seconds until the wireless activation lamp blinks in green. And then press the wireless activation button on the tool in the same way.
4. If linked successfully, the wireless activation lamps will light up in green for 2 seconds and start blinking in blue.

1. Install the wireless unit to the tool.
2. Connect the hose of the vacuum cleaner with the tool.
3. Set the stand-by switch on the vacuum cleaner to “AUTO”.
4. Push the wireless activation button on the tool briefly. The wireless activation lamp will blink in blue.
5. Pull the switch trigger of the tool. Check if the vacuum cleaner runs while the switch trigger is being pulled.

1. Install the batteries to the vacuum cleaner and the tool.
2. Set the stand-by switch on the vacuum cleaner to “AUTO”.
3. Press the wireless activation button on the vacuum cleaner for 6 seconds. The wireless activation lamp blinks in green and then become red. After that, press the wireless activation button on the tool in the same way.
4. If successful, the lamps will light up in red for 2 seconds and start blinking in blue.

The tool and its air vents have to be kept clean. Regularly clean the tool’s air vents or whenever the vents start to become obstructed. Remove the dust cover from inhalation vent and clean it for smooth air circulation.

Notice: Clean out the dust cover when it is clogged with dust or foreign matters. Continuing operation with a clogged dust cover may damage the tool.