When driving wood screws, predrill Pilot holes to make driving easier and to pre-
vent splitting of the workpiece. See the chart.
Nominal diameter | Recommended size |
of wood screw (mm) | O f pilot hole (mm) |
3.1(i/8*) 2.0- 2.2(5/64" - 3/32")
3.5(9/64') 2.2- 2.5(3/32"- 3/32")
3.8(5/32") 2.5- 2.8 (3/32"- 7/64")
4.5(11164") 2.9-
4.8(3/16"1 3.1- 3.4 (118'- 9/64")
5.1(13/64") 3.3- 3.6(118'- 9/63")
5.5(7/32") 3.7- 3.9 (9/64"- 5/32")
5.8(15/64"1 4.0- 4.2(5/32"- 11/64")
Drilling operation 
Drilling in wood
When drilling in wood, 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 centerpunch and hammer a t 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 pres- sure 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.
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
MA1NTENANCE
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, maintenance or adjustment should be performed by Makita Authorized or Factory Service Centers, always using Makita replacement parts.
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