Makita DA4031 Manuale di istruzioni - Pagina 10

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OPERATION

1. Reaction

2. Forward

3. Spade grip

4. Handle

1. Reaction

2. Reverse

Holding tool

003078

CAUTION:

•

This is a powerful tool. High torque is developed and it is

important that the tool should be securely held and

properly braced.

Grasp the switch handle with one hand and the spade grip

with the other hand. When drilling a large hole with a self-

feed bit, etc., the side grip (auxiliary handle) should be used

as a brace to maintain safe control of the tool.

When drilling action is forward (clockwise), the tool should be

braced to prevent a counterclockwise reaction if the bit

003079

should bind. When reversing, brace the tool to prevent a

clockwise reaction. If the bit must be removed from a partially

drilled hole, be sure the tool is properly braced before revers-

ing.

Drilling operation

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.