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ASSEMBLY
CAUTION:
Always be sure that the tool is switched off and the
•
battery cartridge is removed before carrying out
any work on the tool.
Installing or removing driver bit or drill bit
For model DA391D
1
2
002123
Hold the ring and turn the sleeve counterclockwise to
open the chuck jaws. Place the bit in the chuck as far as
it will go. Hold the ring firmly and turn the sleeve
clockwise to tighten the chuck.
To remove the bit, hold the ring and turn the sleeve
counterclockwise.
For model DA301D
003609
To install the bit, place it in the chuck as far as it will go.
Tighten the chuck by hand. Place the chuck key in each
of the three holes and tighten clockwise. Be sure to
tighten all three chuck holes evenly.
To remove the bit, turn the chuck key counterclockwise
in just one hole, then loosen the chuck by hand.
After use, return the chuck key to the storage cavity on
the tool.
1
003610
1. Sleeve
2. Ring
1. Chuck key
1
1. Chuck key
OPERATION
Screwdriving operation
002136
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 trigger just as
the screw bottoms out. If the trigger is not released, the
screw may strip out the hole or the screw and/or bit may
be damaged.
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
(mm)
3.1
3.5
3.8
4.5
006422
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.
6
Recommended size of pilot hole
(mm)
2.0 - 2.2
2.2 - 2.5
2.5 - 2.8
2.9 - 3.2
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