English
3. Plastic case
Optional accessories are subject to change without
notice.
APPLICATIONS
○ Tightening hex-head screws.
○ Tightening drywall screws, wood screws and self-drilling
screws.
PRIOR TO OPERATION
1. Power source
Ensure that the power source to be utilized conforms
to the power requirements specifi ed on the product
nameplate.
2. Power switch
Ensure that the power switch is in the OFF position. If
the plug is connected to a power receptacle while the
power switch is in the ON position, the power tool will
start operating immediately, which could cause a serious
accident.
3. Extension cord
When the work area is removed from the power source,
use an extension cord of suffi cient thickness and rated
capacity. The extension cord should be kept as short as
practicable.
4. Confi rm the direction of bit rotation (Fig. 1)
The bit rotates clockwise (viewed from the rear side)
when the reversing switch lever is set to the "R" side
position. When the lever is set to the "L" side position, the
bit rotates counterclockwise and can be used to loosen
and remove screws.
5. Adjusting the tightening depth (Fig. 2)
The tightening depth can be adjusted by turning locator
right and left click feeling.
(1) For hex-head screws:
Mount a hex-head screw on the hex-socket and set the
distance between the sub-stopper end and the screw
head neck to 1–1.5 mm, as shown in Fig. 3.
(2) For drywall screws:
Mount a drywall screw on the bit, and set the distance
between the sub-stopper end and the screw head to
1.5–2 mm, as shown in Fig. 4.
(3) For cross-recessed self-drilling screws:
Mount a self-drilling screw on the bit, and set the distance
between the sub-stopper end and the screw head bottom
to 1–1.5 mm, as shown in Fig. 5.
6. Mounting the bit
For details, refer to the item "Mounting and dismounting
the bit".
MOUNTING AND DISMOUNTING THE HEX-
SOCKET OR THE BIT
1. Dismounting the hex-socket (Fig. 6)
(1) While rotating the Sub-Stopper pull it out from the
locator.
(2) Remove the hex-socket, hold it with the opposite side of
bit by hand or vise and pull out the bit with pliers.
5
2. Dismounting the bit (Fig. 7)
Remove sub-stopper (G) as the same manner of hex-
head socket and remove the bit holder, then pull out the
bit with pliers.
3. Dismounting the bit (Fig. 8)
Remove the sub-stopper (F) as the same manner of hex-
head socket and remove the bit holder, then pull out the
bit with pliers.
4. Mounting the hex-socket or the bit
Install the bit in the reverse order to removal.
HOW TO USE THE SCREW DRIVER
1. Switch operation and rotational speed adjustment
Bit rotational speed can be adjusted between 0 – 6000/
min (W6VM) or 0 – 4500/min (W6V4) or 0 – 3000/min
(W6VA4) or 0 – 2600/min (W6VB3) or 0 – 1700/min
(W8VB2) varying the degree by which the trigger switch
is pulled. Rotational speed increases as the trigger
switch is pulled, and reaches a maximum speed of 6000
/min (W6VM) or 4500/min (W6V4) or 3000/min (W6VA4)
or 2600/min (W6VB3) or 1700/min (W8VB2) when the
trigger switch is pulled fully.
To facilitate continuous operation, pull the trigger switch
and depress the switch stopper. The switch will then
remain ON even when the fi nger is released. By pulling
the trigger switch again, the switch stopper disengages
and the switch is turned OFF when the trigger switch is
released.
2. Screw Driver operation
When the switch is turned ON, the motor starts to run
but the hex-socket (or the bit) does not rotate. Attach
the hex-socket to the screw head groove, and push the
Screw Driver against the screw. The hex-socket then
rotates and tightens the screw.
CAUTION
Ensure that the Screw Driver is held truly perpendicular
to the head of the screw.
If held at an angle, the driving force will not be fully
transferred to the screw, and the screw head and/or hex-
socket will be damaged. Hex-socket rotation stops when
pushing force is released.
3. Direction of hex-socket rotation
The hex-socket rotates clockwise (viewed from the rear
side) when the reversing switch lever is set to the "R" side
position. When the lever is set to the "L" side position, the
hex-socket rotates counter-clockwise, and can be used
to loosen and remove screws.
CAUTION
Never change the direction of hex-socket (or bit holder)
rotation while the motor is running. To do so would
seriously damage the motor. Turn the power switch OFF
before changing the direction of hex-socket (or bit holder)
rotation.
MAINTENANCE AND INSPECTION
1. Inspecting the hex-socket (or bit)
Since continued use of a worn hex-socket (bit) will
damage screw heads, replace the hexsocket (bit) with a
new one as soon as excessive wear is noticed.
2. Inspecting the mounting screws
Regularly inspect all mounting screws and ensure that
they are properly tightened. Should any of the screws be
loose, retighten them immediately. Failure to do so could
result in serious hazard.
3. Maintenance of the motor
The motor unit winding is the very "heart" of the power
tool. Exercise due care to ensure the winding does not
become damaged and/or wet with oil or water.