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Adjusting fastening torque
When driving wood screws, predrill pilot
Nominal diameter
of
wood
screw
Imm)
3.1
11
/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
is
minimum when
the
pointer points
to the number
1
and maximum when
it
points to the
-8-
marking. The clutch
will slip
at
varying torque
levels
when the
pointer
is
set
at
the numbers
1
to
5.
The
clutch
is
designed not to slip
at
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
11
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