Hitachi DS 12DM Handling Instructions Manual page 11

(3) Adjusting the tightening torque
Rotate the clutch dial and line up the numbers "1,
3, 5 ... 22" on the clutch dial, or the dots, with the
triangle mark on the outer body. Adjust the clutch
dial in the weak or the strong torque direction
according to the torque you need.
CAUTION
The motor rotation may be locked to cease while
the unit is used as drill. While operating the driver
drill, take care not to lock the motor.
Too long hammering may cause the screw broken
due to excessive tightening.
3. Change rotation speed
Operate the shift knob to change the rotational
speed. Move the shift knob in the direction of the
arrow (See Figs. 7 and 8).
When the shift knob is set to "LOW", the drill
rotates at a low speed. When set to "HIGH", the
drill rotates at a high speed.
Table 6
Work
Wood
Drilling Steel
Aluminum
Machine screw
Driving
Wood screw
5. How to select tightening torque and rotational speed
Table 7
Use
Machine screw
Driving
Wood screw
Wood
Drilling
Metal
CAUTION
The selection examples shown in Table 7 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.
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.
Use for drilling purpose.
Use the bit or socket matching the screw diameter.
Use after drilling a pilot hole.
Rotating speed selection (Position of the shift knob)
Clutch Position
For 4 mm or smaller diameter
1 – 22
screws.
For 6.2 mm or smaller nominal
diameter screws. (DS9DM)
1 –
For 6.8 mm or smaller nominal
diameter screws. (DS12DM)
For 21 mm or smaller
diameters. (DS9DM)
For 27 mm or smaller
diameters. (DS12DM)
For drilling with a metal
working drill bit.
CAUTION
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.
When setting the shift knob to "HIGH" (high speed)
and the position of the clutch dial is "17" or "22",
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 "LOW" (low speed).
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.
4. The scope and suggestions for uses
The usable scope for various types of work based
on the mechanical structure of this unit is shown
in Table 6.
Suggestions
LOW (Low speed)
NOTE
The use of the battery EB9H, EB926H, EB930H,
EB1222HL, EB1226HL and EB1230HL in a cold
condition (below 0 degree Centigrade) can
sometimes result in the weakened tightening torque
and reduced amount of work.
a temporary phenomenon, and returns to normal
when the battery warms up.
6. Using the hook
CAUTION
When using the hook, pay sufficient attention so that
the main equipment does not fall. If the tool falls,
there is a risk of accident.
English
HIGH (High speed)
For 6 mm or smaller
diameter screws.
For 3.8 mm or smaller
nominal diameter screws.
For 18 mm or smaller
diameters.
This, however, is
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