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Adjusting fastening torque
When driving wood screws, predrill pilot
Nominal diameter of
wood
screw Imm)
3 . 1 1 1
/E")
vent splitting of the workpiece. See the
3.5 19/64',)
chart.
3.8 15/32")
4.5 111/64")
4.8 13/16")
5.1 113/64")
5.5 17/32")
5.8 17/32")
6.1
(
1
5/64',)
6.4 11/4")
holes to make driving easier and to pre-
The fastening torque can be adjusted in six
stages by turning the adjusting ring so that
the pointer on the adjusting ring points to
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
-8-
marking. The clutch
will slip a t varying torque levels when the
pointer is set a t the numbers 1 to 5. The
clutch i s designed not to slip a t the
-8-
marking.
Recommended size
of pilot
hole 1 " )
2.0
-
2.2 15/64"
-
3/32',)
2.2
-
2.5 13/32"
-
3/32")
2.5
-
2.8 13/32"
-
7/64')
2.9
-
3.2 17/64"
-
1/8")
3.1
-
3.4 (1/8"
-
9/64',)
3.3
-
3.6 11/8"
-
9/64',)
3.7
-
3.9 19/64"
-
5/32',)
4.0
-
4.2 15/32"
-
11/64")
4.2
-
4.4
I1
1/64"
-
11/64')
4.4
-
4.6 1 1 1/64"
-
6/32")
Drill marking
Adiusting ring
'
?\\
Before actual operation, drive
a
trial screw into your material or
a
piece of duplicate
material to 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
n umbers.
Screwdriving operation
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 as
soon
as the clutch cuts in.
NOTE :
0
Make sure that the driver bit is inserted straight in the screw head, or the screw and/or
bit may be damaged.
10
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