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Руководство по эксплуатации Страница: 9

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HP0300
Руководство по эксплуатации Страница: 9

Makita HP0300 — руководство по сверлению: советы и предостережения [9/28]

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Makita HP0300 [9/28] Replacing carbon brushes

9 ENGLISH

Hammer drilling operation

CAUTION: There is a tremendous and sud-

den twisting force exerted on the tool/drill bit

at the time of hole breakthrough, when the hole

becomes clogged with chips and particles, or

when striking reinforcing rods embedded in the

concrete.

First, turn the action mode changing ring so that the arrow

on the tool body points to the marking. The adjusting

ring can be aligned in any torque levels for this operation.

Be sure to use a tungsten-carbide tipped drill bit.

Position the drill bit at the desired location for the hole,

then pull the switch trigger. Do not force the tool. Light

pressure gives best results. Keep the tool in position

and prevent it from slipping away from the hole.

Do not apply more pressure when the hole becomes

clogged with chips or particles. Instead, run the tool at

an idle, then remove the drill bit partially from the hole.

By repeating this several times, the hole will be cleaned

out and normal drilling may be resumed.

Blow-out bulb

Optional accessory

► Fig.10: 1. Blow-out bulb

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

dust out of the hole.

Drilling operation

First, turn the action mode changing ring so that the arrow

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 drill bit into the workpiece.

Drilling in metal

To prevent the drill 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

drill bit in the indentation and start drilling.

Use a cutting lubricant when drilling metals. The excep-

tions 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 drill

bit, decrease the tool performance and shorten the

service life of the tool.

CAUTION: Hold the tool rmly and exert care

when the drill bit begins to break through the

workpiece. There is a tremendous force exerted on

the tool/drill bit at the time of hole break through.

CAUTION: A stuck drill 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 rmly.

CAUTION: Always secure workpieces in a

vise or similar hold-down device.

MAINTENANCE

CAUTION: Always be sure that the tool is

switched off and unplugged before attempting to

perform inspection or maintenance.

NOTICE: Never use gasoline, benzine, thinner,

alcohol or the like. Discoloration, deformation or

cracks may result.

To maintain product SAFETY and RELIABILITY,

repairs, any other maintenance or adjustment should

be performed by Makita Authorized or Factory Service

Centers, always using Makita replacement parts.

Replacing carbon brushes

► Fig.11: 1. Limit mark

Check the carbon brushes regularly.

Replace them when they wear down to the limit mark.

Keep the carbon brushes clean and free to slip in the

holders. Both carbon brushes should be replaced at the

same time. Use only identical carbon brushes.

1. Use a screwdriver to remove the brush holder

caps.

2. Take out the worn carbon brushes, insert the new

ones and secure the brush holder caps.

► Fig.12: 1. Brush holder cap

OPTIONAL

ACCESSORIES

CAUTION: These accessories or attachments

are recommended for use with your Makita tool

specied in this manual. The use of any other

accessories or attachments might present a risk of

injury to persons. Only use accessory or attachment

for its stated purpose.

If you need any assistance for more details regard-

ing these accessories, ask your local Makita Service

Center.

• Drill bits

• Driver bits

• Socket bits

• Tungsten-carbide tipped drill bit

• Blow-out bulb

• Hook

• Driver bit holder

NOTE: Some items in the list may be included in the

tool package as standard accessories. They may

differ from country to country.

Makita HP0300 — руководство по сверлению: советы и предостережения [9/28]

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