Makita 8381D, 8391D, 8271D Maintenance, Blow-out bulb optional accessory, Screwdriving operation

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Blow-out bulb (optional accessory)

1. Blow-out bulb

1

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After drilling the hole, use the blow-out bulb to clean the dust out of the hole.

Screwdriving operation

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First, turn the action mode changing ring so that the arrow on the tool body points to the marking. Adjust the adjusting ring to the proper torque level for your work. Then proceed as follows.

Place the point of the driver bit in the screw head and apply pressure to the tool. Start the tool slowly and then increase the speed gradually. Release the switch trigger as soon as the clutch cuts in.

CAUTION:

Make sure that the driver bit is inserted straight in the screw head, or the screw and/or bit may be damaged.

NOTE:

When driving wood screws, predrill pilot holes to make driving easier and to prevent splitting of the workpiece. See the chart.

Nominal diameter of wood screw

Recommended size of pilot hole

(mm)

(mm)

 

 

3.1

2.0 - 2.2

3.5

2.2 - 2.5

3.8

2.5 - 2.8

4.5

2.9 - 3.2

4.8

3.1 - 3.4

5.1

3.3 - 3.6

5.5

3.7 - 3.9

5.8

4.0 - 4.2

6.1

4.2 - 4.4

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Drilling operation

First, turn the adjusting ring so that the pointer points to

the marking. Then proceed as follows.

Drilling in wood

When drilling in wood, the best results are obtained with wood drills equipped with a guide screw. The guide screw makes drilling easier by pulling the bit into the workpiece.

Drilling in metal

To prevent the bit from slipping when starting a hole, make an indentation with a center-punch and hammer at the point to be drilled. Place the point of the bit in the indentation and start drilling.

Use a cutting lubricant when drilling metals. The exceptions are iron and brass which should be drilled dry.

CAUTION:

Pressing excessively on the tool will not speed up the drilling. In fact, this excessive pressure will only serve to damage the tip of your bit, decrease the tool performance and shorten the service life of the tool.

There is a tremendous force exerted on the tool/bit at the time of hole break through. Hold the tool firmly and exert care when the bit begins to break through the workpiece.

A stuck bit can be removed simply by setting the reversing switch to reverse rotation in order to back out. However, the tool may back out abruptly if you do not hold it firmly.

Always secure small workpieces in a vise or similar hold-down device.

If the tool is operated continuously until the battery cartridge has discharged, allow the tool to rest for 15 minutes before proceeding with a fresh battery.

MAINTENANCE

CAUTION:

Always be sure that the tool is switched off and the battery cartridge is removed before attempting to

perform inspection or maintenance.

To maintain product SAFETY and RELIABILITY, repairs, any other maintenance or adjustment should be performed by Makita Authorized Service Centers, always using Makita replacement parts.

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Contents Cordless Hammer Driver Drill Specifications SymbolsGeneral Power Tool Safety Warnings EC Declaration of ConformityPage Tips for maintaining maximum battery life Specific Safety RulesImportant Safety Instructions For Battery Cartridge Speed change Switch actionFunctional Description Assembly OperationMaintenance Blow-out bulb optional accessoryScrewdriving operation Drilling operationAccessories Page Page Makita Corporation Anjo, Aichi, Japan