MAKITA DGA405 (02) PDF MANUAL

MAKITA DGA405 (02) PDF SUMMARY:

What is this tool intended for?

The tool is intended for grinding, sanding, and cutting of metal and stone materials without the use of water.

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What should I do before adjusting or checking the function on the tool?

Always be sure that the tool is switched off and the battery cartridge is removed.

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How do I install or remove 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 in place. If it cannot be slid in easily, it is not being inserted correctly.

• Always switch off the tool before installing or removing the battery cartridge.
• Hold the tool and the battery cartridge firmly when installing or removing the battery cartridge. Failure to hold the tool and the battery cartridge firmly may cause them to slip off and result in damage to the tool and battery cartridge and a personal injury.
• 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.
• Do not install the battery cartridge forcibly. If the cartridge does not slide in easily, it is not being inserted correctly.

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How do I use the switch?

To start the tool, pull the lock-off lever toward the operator and then pull the switch lever. Release the switch lever to stop.

• 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.

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What is the accidental re-start preventive function?

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 then pull the switch lever.

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How do I know the remaining battery capacity?

When you turn the tool on, the battery indicator shows the remaining battery capacity. The remaining battery capacity is shown as the following table:

• 50% – 100%: On
• 20% – 50%: Off
• 0% – 20%: Blinking

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What is the automatic speed change function?

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

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What is the tool/battery protection system?

The tool is equipped with a tool/battery protection system, which 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 indications. 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 for tool: When the tool is overheated, the tool stops automatically and the battery indicator shows it. In this situation, let the tool cool before turning the tool on again.
• Releasing protection lock: When the protection system works repeatedly, the tool is locked and the battery indicator shows it. 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.

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What is the shaft lock for?

Press the shaft lock to prevent spindle rotation when installing or removing accessories. Never actuate the shaft lock when the spindle is moving, as the tool may be damaged.

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What should I do before carrying out any work on the tool?

Always be sure that the tool is switched off and the battery cartridge is removed.

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How do I install the side grip (handle)?

Screw the side grip securely on the position of the tool. Always be sure that the side grip is installed securely before operation.

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How do I install or remove the wheel guard?

Loosen the lever on the wheel guard after loosening the screw. Mount the wheel guard with the protrusion on the wheel guard band aligned with the notch on the bearing box. Then rotate the wheel guard to such an angle that it can protect the operator according to work. Tighten the lever to fasten the wheel guard. If the lever is too tight or too loose to fasten the wheel guard, loosen or tighten the screw to adjust the tightening of the wheel guard band. To remove the wheel guard, follow the installation procedure in reverse.

• When using a depressed center grinding wheel/flap disc, flex wheel, wire wheel brush, cut-off wheel or diamond wheel, 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.

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How do I install or remove the depressed center wheel or flap disc?

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. Fit the wheel/disc on the inner flange and screw the lock nut onto the spindle. 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. To remove the wheel, follow the installation procedure in reverse.

• When using a depressed center wheel or flap disc, the wheel guard must be fitted on the tool so that the closed side of the guard always points toward the operator.
• Only actuate the shaft lock when the spindle is not moving.

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How do I install or remove the Ezynut?

Mount inner flange, abrasive wheel, and Ezynut onto the spindle so that the Makita Logo on Ezynut faces outside. Press the shaft lock firmly and tighten Ezynut by turning the abrasive wheel clockwise as far as it turns. Turn the outside ring of Ezynut counterclockwise to loosen.

• Do not use Ezynut with Super Flange or angle grinder with “F” on the end of the model No. Those flanges are so thick that the entire thread cannot be retained by the spindle.
• Ezynut can be loosened by hand as long as the arrow points to the notch; otherwise, a lock nut wrench is required to loosen it. Insert one pin of the wrench into a hole and turn Ezynut counterclockwise.

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How do I install or remove the flex wheel?

Follow instructions for depressed center grinding wheel/ flap disc but also use plastic pad over wheel. Always use supplied guard when flex wheel is on tool, as the wheel can shatter during use and the guard helps to reduce chances of personal injury.

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How do I install or remove the abrasive disc?

Mount the rubber pad onto the spindle. Fit the disc on the rubber pad and screw the lock nut onto the spindle. 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. To remove the disc, follow the installation procedure in reverse. Use sander accessories specified in the PDF; these must be purchased separately.

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What should I keep in mind during operation?

• It should never be necessary to force the tool. The weight of the tool applies adequate pressure. Forcing and excessive pressure could cause dangerous wheel breakage.
• Always replace the wheel if the tool is dropped while grinding.
• Never bang or hit grinding disc or wheel onto work.
• Avoid bouncing and snagging the wheel, especially when working corners, sharp edges, etc. This can cause loss of control and kickback.
• Never use the tool with wood cutting blades and other sawblades. Such blades when used on a grinder frequently kick and cause loss of control leading to personal injury.
• Never switch on the tool when it is in contact with the workpiece, as it may cause injury to the 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.

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How do I perform grinding and sanding operations?

Always hold the tool firmly with one hand on the housing and the other on the side handle. 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 degrees to the workpiece surface. During the break-in period with a new wheel, do not work the grinder in the B direction or it will cut into the workpiece. Once the edge of the wheel has been rounded off by use, the wheel may be worked in both A and B directions.

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How do I operate the tool with an abrasive cut-off/diamond wheel?

Remove the battery cartridge from the tool and place it upside down allowing easy access to the spindle. Mount the inner flange and abrasive cut-off/diamond wheel onto the spindle. Tighten the lock nut securely with the supplied wrench. The direction for mounting the lock nut and the inner flange varies by wheel thickness.

• 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 a cut-off wheel for side grinding.
• Do not “jam” the wheel or apply excessive pressure. Do not attempt to make an excessive depth of cut. Overstressing the wheel increases the loading and susceptibility to twisting or binding of the wheel in the cut and the possibility of kickback, wheel breakage, and overheating of the motor may occur.
• Do not start the cutting operation in the workpiece. Let the wheel reach full speed and carefully enter into the cut moving the tool forward over the workpiece surface. The wheel may bind, walk up, or kickback if the power tool is started in the workpiece.
• During cutting operations, never change the angle of the wheel. Placing side pressure on the cut-off wheel (as in grinding) will cause the wheel to crack and break, causing serious personal injury.
• A diamond wheel shall be operated perpendicular to the material being cut.

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How do I operate the tool with a wire cup brush?

Remove the battery cartridge from the tool and place it upside down allowing easy access to the spindle. Remove any accessories on the spindle. Thread wire cup brush onto spindle and tighten with supplied wrench. When using brush, avoid applying too much pressure which causes over bending of wires, leading to premature breakage.

• 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, or which is out of balance. Use of damaged brush could increase potential for injury from contact with broken brush wires.

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How do I operate the tool with a wire wheel brush?

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

• 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.
• Do not use wire wheel brush that is damaged, or which is out of balance. Use of damaged wire wheel brush could increase potential for injury from contact with broken wires.
• Always use guard with wire wheel brushes, assuring diameter of wheel fits inside guard. Wheel can shatter during use and guard helps to reduce chances of personal injury.

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What should I do before attempting to perform inspection or maintenance?

Always be sure that the tool is switched off and the battery cartridge is removed. Never use gasoline, benzine, thinner, alcohol, or the like, as discoloration, deformation, or cracks may result.

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How should I maintain the tool?

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 the inhalation vent and clean it for smooth air circulation. Clean out the dust cover when it is clogged with dust or foreign matters, as continuing operation with a clogged dust cover may damage the tool.