Makita 6300-4 [6/20] Maintenance

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.

• There is a tremendous force exerted on the tool/bit

at the time of hole breakthrough. Hold the tool

firmly and exert care when the bit begins to break

through the workpiece.

• Always secure small workpieces in a vise or similar

hold-down device.

MAINTENANCE

CAUTION:

Always be sure that the tool is switched off and

unplugged before carrying out any work on the tool.

Replacement of carbon brushes (Fig. 7 & 8)

Replace carbon brushes when they are worn down to

the limit mark. Both identical carbon brushes should

be replaced at the same time.

To maintain product safety and reliability, repairs,

maintenance or adjustment should be carried out by

a Makita Authorized Service Center.