Operation Manual

28
English
6. How to select tightening power and rotational speed
CAUTION
䡬 The selection examples shown in Table 2 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 impact 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 impact drill at LOW (low speed)
when using a machine screw.
7. Mounting and dismounting of the bit.
(1) Mounting the bit
After inserting a driver bit, etc. into the keyless drill
chuck, firmly grasp the ring and tighten the sleeve
by turning it toward the right (in the clockwise
direction as viewed from the front). (See Fig. 8)
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
Firmly grasp the ring and loosen the sleeve by
turning it toward the left (in the counter-clockwise
direction as viewed from the front). (See Fig. 8)
CAUTION:
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.
Table 2
Use Cap Position
Rotating speed selection (Position of the shift knob)
Machine screw
1 — 22
Driving
Wood screw
1 —
Brick
Drilling Wood
Metal
LOW (Low speed)
For 4 mm or smaller
diameter screw.
For 5.1 mm or smaller
nominal diameter screw.
———
For 18 mm or smaller
diameters.
For drilling with a
metal working drill bit.
HIGH (High speed)
For 6 mm or smaller
diameter screw.
For 3.8 mm or smaller
nominal diameter screw.
For drilling with a
carbide tipped drill bit.
For 18 mm or smaller
diameters.
———
NOTE
䡬 There is a plus driver bit on side of the main unit.
The bit can be removed by pulling it forward. After
using the bit, make sure to firmly attach it to the
main body again.
8. Confirm that the battery is mounted correctly.
9. Check the rotational direction
The bit rotates clockwise (viewed from the rear
side) by pushing the R-side of the selector button.
The L-side of the selector button is pushed to turn
the bit counterclockwise. (See Fig. 9). (The
and
marks are provided on the body.)
CAUTION:
Always use this unit with clockwise rotation, when
using it as an impact drill.
10. Switch operation
When the trigger switch is depressed, the tool
rotates. When the trigger is released, the tool stops.
䡬 The rotational speed of the drill can be controlled
by varying the amount that the trigger is pulled.
Speed is low when the trigger switch is pulled
slightly and increases as the trigger switch is pulled
more.
NOTE
䡬 A buzzing noise is produced when the motor is
about to rotate; This is only a noise, not a machine
failure.
11. For drilling into brick
Excessive pressing force never increases drilling
speed. It will not only damage the drill tip or reduce
working efficiency, but could also shorten the service
life of drill bit. Operate the impact drill within 10-
15 kg pressing force while drilling into brick.
Table 1
Work Suggestions
Brick
Drilling
Wood
Use for drilling purpose.
Steel
Aluminum
Driving
Machine screw Use the bit and socket matching the screw diameter.
Wood screw Use after drilling a pilot hole.