8 ENGLISH
Position of
speed
change lever
Speed
Torque
Applicable
operation
1
Low
High
Heavy load-
ing operation
2
High
Low
Light loading
operation
To change the speed, switch off the tool first. Select
the "2" side for high speed or "1" for low speed but high
torque. Be sure that the speed change lever is set to the
correct position before operation.
If the tool speed is coming down extremely during the
operation with "2", slide the lever to the "1" and restart
the operation.
Adjusting the fastening torque
►
Fig.7:
1. Adjusting ring 2. Graduation 3. Arrow
The fastening torque can be adjusted in 19 steps by turning the adjusting ring. Align the graduations with the arrow
on the tool body. You can get the minimum fastening torque at 1 and maximum torque at
marking.
The clutch will slip at various torque levels when set at the number 1 to 18. The clutch does not work at the
marking.
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.
The following shows the rough guide of the relationship between the screw size and graduation.
Graduation
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Machine screw
M4
M5
M6
Wood
screw
Soft wood
(e.g. pine)
–
ɸ
3.5 x 22
ɸ
4.1x 38
Hard wood
(e.g. lauan)
–
ɸ
3.5 x 22
–
–
ɸ
4.1x 38
ASSEMBLY
CAUTION:
Always be sure that the tool is
switched off and the battery cartridge is removed
before carrying out any work on the tool.
Installing or removing driver bit/
drill bit
For Model DF331D
(optional accessory)
►
Fig.8:
1. Sleeve 2. Close 3. Open
Turn the sleeve counterclockwise to open the chuck
jaws. Place the driver bit/drill bit in the chuck as far
as it will go. Turn the sleeve clockwise to tighten the
chuck. To remove the driver bit/drill bit, turn the sleeve
counterclockwise.
Installing or removing driver bit/
socket bit
For Model DF031D
(optional accessory)
►
Fig.9
Use only driver bit/socket bit that has inserting portion
shown in the figure. Do not use any other driver bit/
socket bit.
For tool with shallow driver bit hole
A=12mm
B=9mm
Use only these type of driver
bit. Follow the procedure
1. (Note) Bit-piece is not
necessary.
For tool with deep driver bit hole
A=17mm
B=14mm
To install these types of driver
bits, follow the procedure 1.
A=12mm
B=9mm
To install these types of driver
bits, follow the procedure 2.
(Note) Bit-piece is necessary
for installing the bit.
1. To install the driver bit, pull the sleeve in the direc
-
tion of the arrow and insert the driver bit into the
sleeve as far as it will go.
Then release the sleeve to secure the driver bit.
►
Fig.10:
1. Driver bit 2. Sleeve
2. To install the driver bit, pull the sleeve in the direc
-
tion of the arrow and insert the bit-piece and driver
bit into the sleeve as far as it will go. The bit-piece
should be inserted into the sleeve with its pointed
end facing in. Then release the sleeve to secure
the driver bit.
►
Fig.11:
1. Driver bit 2. Bit-piece 3. Sleeve
To remove the driver bit, pull the sleeve in the direction
of the arrow and pull the driver bit out.
NOTE:
If the driver bit is not inserted deep enough
into the sleeve, the sleeve will not return to its original
position and the driver bit will not be secured. In this
case, try re-inserting the bit according to the instruc
-
tions above.
NOTE:
After inserting the driver bit, make sure that it
is firmly secured. If it comes out, do not use it.
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