Operation Manual

27
English
mark " " or the hammer mark" " to the triangle
mark of the housing.
䡬 To make holes in the metal, wood or plastic, switch
to "Rotation (Rotation only)".
䡬 To make holes in bricks or concrete blocks, switch
to "Impact (Impact + Rotation)".
CAUTION
If an operation which is normally performed at the
"Rotation" setting is performed at "Impact " setting,
the effect of making holes does not only increase
but it may also damage the bit or other parts.
4. Change rotation speed
Operate the shift knob to change the rotational
speed. Move the shift knob in the direction of the
arrow (see Figs. 5 and 6).
When the shift knob is set to “L”, the drill rotates
at a low speed. When set to “H”, the drill rotates
at a high speed.
CAUTION
䡬 When changing the rotational speed with the shift
knob, confirm that the switch is off.
Changing the speed while the motor is rotating will
damage the gears.
䡬 When setting the shift knob to “H” (high speed) and
the position of the cap is “4” or “5”, it may happen
that the clutch does not engaged and that the motor
is locked. In such a case, please set the shift knob
to “L” (low speed).
䡬 If the motor is locked, immediately turn the power
off. If the motor is locked for a while, the motor
or battery may be burnt.
5. The scope and suggestions for uses
The usable scope for various types of work based
on the mechanical structure of this unit is shown
CAUTION
Align the number and mark on the cap to the
triangle mark of the housing. The middle point of
the numbers and marks on the cap cannot be
secured.
2. Tightening torque adjustment
(1) Tightening torque
Tightening torque should correspond in its intensity
to the screw diameter. When too strong power is
used, the screw head may be broken or be injured.
Be sure to adjust the cap position according to the
screw diameter.
(2) Tightening torque indication
Tightening torque should be changed according to
the screw type and the materials to be tightened.
Guidance of the tightening torque is indicated on
the cap of this unit with numerals “1”, “2”, “3”,
“4” and “5”. The minimum power is from “1”
position and bigger the value the stronger is the
power (see Fig. 4).
(3) How to adjust the tightening torque
Rotate the cap and set to one of the numerals.
Adjust the torque by cap rotation in such a way that
when the torque is too strong, set to the next
smaller numeral and set to the next larger numeral
when too weak.
CAUTIONS
䡬 The motor rotation may be locked to cease while
the unit is used as drill. While operating the impact
drill, take care not to lock the motor.
䡬 Too long hammering may cause the screw broken
due to excessive tightening.
3. Rotation to Impact changeover (See Fig. 4.).
The "Rotation (Rotation only)" and "Impact (Impact
+ Rotation)" can be switched by aligning the drill
Work Usable range Suggestions
Drilling
Brick: 10 mm
Use for drilling purpose.
Wood: 18 mm
Steel: 10 mm
Aluminum: 10 mm
Driving
Machine screw: 6 mm
Use the bit and socket matching the
screw diameter.
Nut: 5 mm
Wood screw: 5.1 mm (diameter) x 32 mm (length) Use after drilling a pilot hole.
6. How to select tightening power and rotational speed
Table 2
Use Cap Position
Rotating speed selection (Position of the shift knob)
L (Low speed) H (High speed)
Driving
Machine screw 1 – 5
F
or 4 mm or sma
ll
er
di
ameter
screws.
F
or 5 mm or
l
arger
diameter screws.
Wood screw 1 – 5 For 3.5 mm or smaller nominal
diameter screws.
For 3.8 mm or larger
nominal diameter screws.
Drilling
Brick ––––––
F
or
d
r
illi
ng w
i
t
h
a
b
r
i
c
k
working drill.
Wood For 10 mm or larger diameters.
F
or 10 mm or sma
ll
er
diameters.
Metal
F
or
d
r
illi
ng w
i
t
h
an
i
ron
working drill.
––––––
For drilling with a carbide
tipped drill bit.
For drilling with a metal
working drill bit.
CAUTION
䡬 The selection examples shown in Table 2 should be considered as general standard. As different types of
tightening screws and different materials to be tightened are used in actual works proper adjustments are
naturally necessary.
Table 1