Hitachi Koki DS 12DM Handling Instructions Manual Download Page 11

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English

CAUTIONS:

䡬

The selection examples shown in

Table 5

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.

䡬

When using the driver drill with a machine screw
at HIGH (high speed), a screw may damage or a
bit may loose due to the tightning torque is too
strong. Use the driver drill at LOW (low speed)
when using a machine screw.

NOTE:

The use of the battery EB1222HL and EB1230HL in
a cold condition (below 0 degree Centigrade) can
sometimes result in the weakened tightening torque
and reduced amount of work. This, however, is
a temporary phenomenon, and returns to normal
when the battery warms up.

6. Using the hook

The hook can be installed on the right or left side
and the angle can be adjusted in 5 steps between
0

and 80

(1) Operating the hook

(a) Pull out the hook toward you in the direction

of arrow (A) and turn in the direction of arrow
(B). (

Fig. 8

)

(b) The angle can be adjusted in 5 steps (0°, 20°,

40°, 60°, 80°).
Adjust the angle of the hook to the desired
position for use.

(2) Switching the hook position

CAUTION:

Incomplete installation of the hook may result in
bodily injury when used.
(a) Securely hold the main unit and remove the

screw using a slotted head screwdriver or a
coin. (

Fig. 9

)

(b) Remove the hook and spring.

(Fig. 10

)

securely fasten with screw. (

Fig. 11

)

NOTE:

Pay attention to the spring orientation. Install the
spring with larger diameter away from you. (

Fig.

)

(3) Using the bit holder

䡬

Installing the bit
Slide the bit from the side in the direction of

Fig. 12

, and then insert firmly until the groove

on the bit locks in the protruded section of the
hook.

䡬

Removing the bit
Securely hold the main unit and pull out the bit
by holding the tip with your thumb. (

Fig. 13

)

CAUTIONS:

䡬

The bit may come loose from the hook and cause
bodily injury when reversing the direction of the
bit as shown in

Fig. 12

or when using the driver

with the bit stored incomplete.

䡬

Only Hitachi OPTIONAL ACCESSORIES plus driver
bits (Bit No. 2; Code No. 992671, Bit No. 3; Code
No. 992672) may be used. Do not use other bits
since they may come loose.

7. Mounting and dismounting of the bit

(1) Mounting the bit

Loosen the sleeve by turning it toward the left (in
the counterclockwise direction as viewed from the
front) to open the clip on the keyless chuck. After
inserting a driver bit, etc., into the keyless drill
chuck, and tighten the sleeve by turning it toward
the right (in the clockwise direction as viewed from
the front). (See

Fig. 14

)

䡬

If the sleeve becomes loose during operation, tighten
it further.
The tightening force becomes stronger when the
sleeve is tightened additionally.

(2) Dismounting the bit

Loosen the sleeve by turning it toward the left (in
the counterclockwise direction as viewed from the
front), and then take out the bit ect. (See

Fig. 14

)

NOTE:

If the sleeve is tightened in a state where the clip
of the keyless chuck is opened to a maximum limit,
a click noise may occur. This is the noise that occurs
when the loosening of the keyless chuck is prevented
and is not a malfunction.

CAUTION:

䡬

When it is no longer possible to loosen the sleeve,
use a vise or similar instrument to secure the bit.
Set the clutch mode between 1 and 11 and then
turn the sleeve to the loose side (left side) while
operating the clutch. It should be easy now to
loosen the sleeve.

8. Automatic spindle-lock mechanism

This unit has automatic spindle-lock mechanism for
quick bit changes.

For 6 mm or smaller
diameter screws.

For 3.8 mm or smaller
nominal diameter screws.

For 18 mm or smaller
diameters.

5. How to select tightening torque and rotational speed

Table 5

Use

Clutch Position

Rotating speed selection (Position of the shift knob)

LOW (Low speed)

HIGH (High speed)