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9. IMPACT to ROTATION changeover (Fig. 5)
Shift the change lever between the right
and left positions to switch easily
between IMPACT (rotation and impact)
and ROTATION (rotation only),
respectively.
To bore holes in hard materials such as
concrete, stone and tiles, shift the
change lever to the right-hand position
(as indicated by the
mark).
The drill bit operates by the combined
actions of impact and rotation.
To bore holes in metal, wood and plastic, shift the change lever to the left-hand position
(as indicated by the
mark). The drill bit operates by rotational action only, as in the
case of a conventional electric drill.
CAUTION:
ⅷ Do not use the Hammer Drill in the IMPACT function if the material can be bored by
rotation only. Such action will not only reduce drill efficiency, but may also damage
the drill tip.
ⅷ Operating the Hammer Drill with the change lever in mid-position may result in damage.
When switching, make sure that you shift the change lever to the correct position.
NOTE:
The change lever may not shift smoothly when changing from hammer drill
mode to drill mode.
In this case, switch ON and operate the machine for few seconds. The
spindle shaft will then be pushed forward, and the change lever can be
moved smoothly.
10. High-speed/Low-speed changeover
Prior to changing speed, ensure that the
switch is in the OFF position, and the drill
has come to a complete stop.
To change speed, rotate the gear shift
dial as indicated by the arrow in Fig. 6.
The numeral “1” engraved on the drill
body denotes low speed, the numeral
“2” denotes high speed.
If it is hard to turn the gear shift dial, turn
the chuck slightly in either direction and
then turn the gear shift dial again.
Fig. 5
Change lever
Fig. 6
Impact Rotation
Gear
Shift Dial