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Adjusting fastening torque
The fastening torque can be adjusted in six
stages by turning the adjusting ring so that
the pointer on the adjusting ring points t o
a number on the tool body. The fastening
torque i s minimum when the pointer points
t o the number 1 and maximum when it
points to the
a\-
marking. The clutch
will slip a t varying torque levels when the
pointer is set a t the numbers 1 t o 5. The
clutch is designed not t o slip a t the
-8-
marking.
When driving wood screws, predrill pilot
Nominal diameter of
wood screw Imm)
3.1 11/8"l
3.5 19/64")
chart.
3.8 (5132")
holes t o make driving easier and to pre-
vent splitting of the workpiece. See the
4.5 I1 1/64")
4.8 13/16"l
5.1 113/64")
5.5 17/32")
5.8 17/32")
6.1 115164")
6.4 11/4"l
Before actual operation, drive a trial screw into your material or a piece of duplicate
material t o determine which torque level is required for a particular application.
NOTE :
The adjusting ring cannot be locked with the pointer positioned half-way between the
numbers.
Recommended size
of pilot hole lmml
2.0
~
2.2 15/64" - 3/32',)
2.2 -
2.5
13/32" - 3/32,')
2.5 - 2.8 f3/32" - 7/64")
2.9 - 3.2 17/64"
-
1/8"l
3.1
~
3.4 11/8" - 9/64"1
3.3 - 3.6 1118"
~
9164"l
3.7
~
3.9 19/64"
-
5/32")
4 . 0 - 4.2 f5/32"
-
11/64")
4.2
~
4.4 111164'
~
11/64")
4.4
~
4.8 111/64" - 6/32',)
Screwdriving operation
Place the point of t h e 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 as soon
as the clutch cuts in.
10
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